Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2018 shares
Document And Entity Information [Abstract]
Entity Registrant Name	UNISYS CORP
Trading Symbol	UIS
Entity Central Index Key	0000746838
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding	50,964,531

Consolidated Statements of Income (Unaudited) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Revenue

Services

$ 568.5

$ 585.3

Technology

139.9

79.2

Total revenue

708.4

664.5

Cost of revenue:

Services

470.9

486.4

^[1]

Technology

36.3

39.5

^[1]

Total cost of revenue

507.2

525.9

^[1]

Selling, general and administrative

90.9

105.0

^[1]

Research and development

8.5

11.8

^[1]

Total costs and expenses

606.6

642.7

^[1]

Operating income

101.8

21.8

^[1]

Interest expense

16.6

5.7

Other income (expense), net

(22.6)

(32.9)

^[1]

Total income (loss) before income taxes

62.6

(16.8)

Provision for income taxes

20.9

12.9

Consolidated net income (loss)

41.7

(29.7)

Net income attributable to noncontrolling interests

1.1

3.0

Net income (loss) attributable to Unisys Corporation

$ 40.6

$ (32.7)

Earnings (loss) per share attributable to Unisys Corporation

Basic (in dollars per share)

$ 0.80

$ (0.65)

Diluted (in dollars per share)

$ 0.62

$ (0.65)

[1]	*Amounts were changed to conform to the current-year presentation. See Note 3.

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Consolidated net income (loss)	$ 41.7	$ (29.7)
Other comprehensive income:
Foreign currency translation	(5.1)	31.1
Postretirement adjustments, net of tax of $1.0 in 2018 and $(1.0) in 2017	39.0	22.4
Total other comprehensive income	33.9	53.5
Comprehensive income	75.6	23.8
Less comprehensive income attributable to noncontrolling interests	(2.3)	(3.2)
Comprehensive income attributable to Unisys Corporation	$ 73.3	$ 20.6

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Postretirement adjustments, tax	$ 1.0	$ (1.0)

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 656.4	$ 733.9
Accounts receivable, net	492.5	503.3
Contract assets	46.4	0.0
Inventories:
Parts and finished equipment	11.5	13.6
Work in process and materials	10.7	12.5
Prepaid expenses and other current assets	115.3	126.2
Total current assets	1,332.8	1,389.5
Properties	906.6	898.8
Less-Accumulated depreciation and amortization	769.7	756.3
Properties, net	136.9	142.5
Outsourcing assets, net	213.4	202.3
Marketable software, net	142.6	138.3
Prepaid postretirement assets	157.3	148.3
Deferred income taxes	116.0	119.9
Goodwill	181.0	180.8
Restricted cash	26.6	30.2
Other long-term assets	207.1	190.6
Total assets	2,513.7	2,542.4
Current liabilities:
Current maturities of long-term-debt	10.6	10.8
Accounts payable	214.5	241.8
Deferred revenue	324.8	327.5
Other accrued liabilities	344.4	391.5
Total current liabilities	894.3	971.6
Long-term debt	636.2	633.9
Long-term postretirement liabilities	1,973.2	2,004.4
Long-term deferred revenue	184.9	159.0
Other long-term liabilities	95.9	100.0
Commitments and contingencies
Deficit:
Common stock, shares issued: 2018; 54.1, 2017; 53.4	0.5	0.5
Accumulated deficit	(1,943.9)	(1,963.1)
Treasury stock, shares at cost: 2018; 3.1, 2017; 2.9	(104.8)	(102.7)
Paid-in capital	4,530.0	4,526.4
Accumulated other comprehensive loss	(3,783.1)	(3,815.8)
Total Unisys stockholders’ deficit	(1,301.3)	(1,354.7)
Noncontrolling interests	30.5	28.2
Total deficit	(1,270.8)	(1,326.5)
Total liabilities and deficit	$ 2,513.7	$ 2,542.4

Consolidated Balance Sheets (Unaudited) (Parenthetical) - shares shares in Millions	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, shares issued (in shares)	54.1	53.4
Treasury stock, shares (in shares)	3.1	2.9

Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2018

Mar. 31, 2017

Cash flows from operating activities

Consolidated net income (loss)

$ 41.7

$ (29.7)

Adjustments to reconcile consolidated net income (loss) to net cash used for operating activities:

Foreign currency transaction losses

3.3

5.3

Non-cash interest expense

2.6

2.0

Employee stock compensation

4.0

3.7

Depreciation and amortization of properties

11.2

10.1

Depreciation and amortization of outsourcing assets

16.1

12.9

Amortization of marketable software

14.7

15.7

Other non-cash operating activities

(0.9)

(1.1)

Loss on disposal of capital assets

0.2

3.8

Postretirement contributions

(30.9)

(31.7)

^[1]

Postretirement expense

19.3

26.2

^[1]

Decrease in deferred income taxes, net

6.0

2.2

Changes in operating assets and liabilities:

Receivables, net

(28.0)

0.1

Inventories

0.8

0.1

Accounts payable and other accrued liabilities

(130.1)

(50.0)

Other liabilities

21.2

(9.2)

^[1]

Other assets

(1.4)

Net cash used for operating activities

(50.2)

(41.0)

Cash flows from investing activities

Proceeds from investments

1,222.7

1,218.9

Purchases of investments

(1,208.7)

(1,211.5)

Investment in marketable software

(19.0)

(13.8)

Capital additions of properties

(5.1)

(8.5)

Capital additions of outsourcing assets

(24.4)

(12.9)

Other

(0.4)

(0.3)

Net cash used for investing activities

(34.9)

(28.1)

Cash flows from financing activities

Payments of long-term debt

(0.7)

Other

(2.1)

Net cash used for financing activities

(2.8)

Effect of exchange rate changes on cash, cash equivalents and restricted cash

6.8

6.3

Decrease in cash, cash equivalents and restricted cash

(81.1)

(65.6)

Cash, cash equivalents and restricted cash, beginning of period

764.1

401.1

Cash, cash equivalents and restricted cash, end of period

$ 683.0

$ 335.5

[1]	*Amounts were changed to conform to the current-year presentation. See Note 3.

Basis of Presentation	3 Months Ended
Basis of Presentation	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements and footnotes of Unisys Corporation have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP). The financial statements and footnotes are unaudited. In the opinion of management, the financial information furnished herein reflects all adjustments necessary for a fair presentation of the financial position, results of operations, comprehensive income and cash flows for the interim periods specified. These adjustments consist only of normal recurring accruals except as disclosed herein. Because of seasonal and other factors, results for interim periods are not necessarily indicative of the results to be expected for the full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions about future events. These estimates and assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and the reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, outsourcing assets, marketable software, goodwill and other long-lived assets, legal contingencies, indemnifications, assumptions used in the calculation for systems integration projects, income taxes and retirement and other post-employment benefits, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. The company’s accounting policies are set forth in detail in Note 1 of the Notes to Consolidated Financial Statements in the company’s Annual Report on Form 10-K for the year ended December 31, 2017 (2017 Form 10-K) field with the Securities and Exchange Commission. Such Annual Report also contains a discussion of the company’s critical accounting policies and estimates. The company believes that these critical accounting policies and estimates affect its more significant estimates and judgments used in the preparation of the company’s consolidated financial statements. As described in Note 3, effective January 1, 2018 the company adopted the requirements of Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606) using the modified retrospective method. The company’s updated accounting policy on revenue recognition is described in Note 2 and in “Critical accounting policies and estimates update” in Item 2 of this Form 10-Q.

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies As described in Note 3, effective January 1, 2018 the company adopted the requirements of ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), using the modified retrospective method. See below for the company’s updated revenue recognition accounting policy. Revenue recognition Revenue is recognized at an amount that reflects the consideration to which the company expects to be entitled in exchange for transferring goods and services to a customer. The company determines revenue recognition using the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the company satisfies a performance obligation. Revenue excludes taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the company from a customer (e.g., sales, use and value added taxes). Revenue includes payments for shipping and handling activities. At contract inception, the company assesses the goods and services promised in a contract with a customer and identifies as a performance obligation each promise to transfer to the customer either: (1) a good or service (or a bundle of goods or services) that is distinct or (2) a series of distinct goods or services that are substantially the same and that have the same pattern of transfer to the customer. The company recognizes revenue only when it satisfies a performance obligation by transferring a promised good or service to a customer. The company must apply its judgment to determine the timing of the satisfaction of performance obligations as well as the transaction price and the amounts allocated to performance obligations including estimating variable consideration, adjusting the consideration for the effects of the time value of money and assessing whether an estimate of variable consideration is constrained. Revenue from hardware sales is recognized upon the transfer of control to a customer, which is defined as an entity’s ability to direct the use of and obtain substantially all of the remaining benefits of an asset. Revenue from software licenses is recognized at the inception of either the initial license term or the inception of an extension or renewal to the license term. Revenue for operating leases is recognized on a monthly basis over the term of the lease and for sales-type leases at the inception of the lease term. Revenue from equipment and software maintenance and post-contract support is recognized on a straight-line basis as earned over the terms of the respective contracts. Cost related to such contracts is recognized as incurred. Revenue and profit under systems integration contracts are recognized over time as the company transfers control of goods or services. The company measures its progress toward satisfaction of its performance obligations using the cost-to-cost method, or when services have been performed, depending on the nature of the project. For contracts accounted for using the cost-to-cost method, revenue and profit recognized in any given accounting period are based on estimates of total projected contract costs. The estimates are continually reevaluated and revised, when necessary, throughout the life of a contract. Any adjustments to revenue and profit resulting from changes in estimates are accounted for in the period of the change in estimate. When estimates indicate that a loss will be incurred on a contract upon completion, a provision for the expected loss is recorded in the period in which the loss becomes evident. Revenue from time and materials service contracts and outsourcing contracts is recognized as the services are provided using either an objective measure of output or on a straight-line basis over the term of the contract. The company also enters into multiple-element arrangements, which may include any combination of hardware, software or services. For example, a client may purchase an enterprise server that includes operating system software. In addition, the arrangement may include post-contract support for the software and a contract for post-warranty maintenance for service of the hardware. These arrangements consist of multiple performance obligations, with control over hardware and software transferred in one reporting period and the software support and hardware maintenance services performed across multiple reporting periods. In another example, the company may provide desktop managed services to a client on a long-term multiple-year basis and periodically sell hardware and license software products to the client. The services are provided on a continuous basis across multiple reporting periods and control over the hardware and software products occurs in one reporting period. To the extent that a performance obligation in a multiple-deliverable arrangement is subject to specific guidance, that performance obligation is accounted for in accordance with such specific guidance. An example of such an arrangement may include leased assets which are subject to specific leasing accounting guidance. In multiple-element arrangements, the company allocates the total transaction price to be earned under the arrangement among the various performance obligations in proportion to their standalone selling prices (relative standalone selling price basis). The standalone selling price for a performance obligation is the price at which the company would sell a promised good or service separately to a customer. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. Many of the company’s contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. For contracts with multiple performance obligations, the company allocates the contract’s transaction price to each performance obligation using its best estimate of the standalone selling price of each distinct good or service in the contract. The primary methods used to estimate standalone selling price are as follows: (1) the expected cost plus margin approach, under which the company forecasts its expected costs of satisfying a performance obligation and then adds an appropriate margin for that distinct good or service and (2) the percent discount off of list price approach. In the Services segment, substantially all of the company’s performance obligations are satisfied over time as work progresses and therefore substantially all of the revenue in this segment is recognized over time. The company generally receives payment for these contracts over time as the performance obligations are satisfied. In the Technology segment, substantially all of the company’s goods and services are transferred to customers at a single point in time. Revenue on these contracts is recognized when control over the product is transferred to the customer or a software license term begins. The company generally receives payment for these contracts upon signature or within 30 to 60 days. At March 31, 2018, the company had approximately $1.5 billion of remaining performance obligations of which approximately 50% is estimated to be recognized as revenue by the end of 2019. The company does not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which the company recognizes revenue at the amount to which it has the right to invoice for services performed. The company discloses disaggregation of its customer revenue by geographic areas and by classes of similar products and services, by segment (see Note 15). The timing of revenue recognition, billings and cash collections results in billed accounts receivables, unbilled receivables, contract assets and deferred revenue (contract liabilities). The disclosure of contract assets is a new requirement due to the adoption of Topic 606. At December 31, 2017, contract assets were included in accounts receivables, net on the company’s Consolidated Balance Sheet. At March 31, 2018, $6.0 million of long-term contract assets were included in other long-term assets on the company’s Consolidated Balance Sheet. Significant changes during the three months ended March 31, 2018 in the above contract asset and liability balances were as follows: revenue of $104.6 million was recognized that was included in deferred revenue at December 31, 2017. The company’s incremental direct costs of obtaining a contract consist of sales commissions which are deferred and amortized ratably over the initial contract life. These costs are classified as current or noncurrent based on the timing of when the company expects to recognize the expense. The current and noncurrent portions of deferred commissions are included in prepaid expenses and other current assets and in other long-term assets, respectively, in the company’s Consolidated Balance Sheets. At March 31, 2018 and December 31, 2017, the company had $10.1 million and $11.0 million, respectively, of deferred commissions. For the three months ended March 31, 2018, $1.7 million of amortization expense related to deferred commissions was recorded in selling, general and administrative expense in the company’s Consolidated Statement of Income. Costs to fulfill a contract, which are incurred upon initiation of certain services contracts and are related to initial customer setup, are included in outsourcing assets, net in the company’s Consolidated Balance Sheet. The amount of such cost at March 31, 2018 and December 31, 2017 was $77.1 million and $76.0 million, respectively. These costs are amortized over the initial contract life and reported in services cost of sales. During the three months ended March 31, 2018, $3.6 million was amortized. Recoverability of these costs are subject to various business risks. Quarterly, the company compares the carrying value of these assets with the undiscounted future cash flows expected to be generated by them to determine if there is impairment. If impaired, these assets are reduced to an estimated fair value on a discounted cash flow basis. The company prepares its cash flow estimates based on assumptions that it believes to be reasonable but are also inherently uncertain. Actual cash flows could differ from these estimates.

Accounting Standards

3 Months Ended

Mar. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Accounting Standards

Accounting Pronouncements Adopted

Effective January 1, 2018, the company adopted ASU No. 2017-07 Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost issued by the Financial Accounting Standards Board (FASB) which requires employers to present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period. The other components of net periodic benefit cost will be presented separately from the line items that include service cost and outside the subtotal of operating income. ASU No. 2017-07 allows a practical expedient that permits an entity to use amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. The new guidance has been applied on a retrospective basis, using the practical expedient, whereby prior-period financial statements have been adjusted to reflect the adoption of the new guidance, as required by the FASB. For the three months March 31, 2017, $24.5 million of net periodic benefit cost, other than service costs, was reclassified from cost of revenue, selling, general and administrative expenses and research and development expenses to other income (expense), net in the company’s consolidated results of operations (see Note 5).

Effective January 1, 2018, the company adopted ASU No. 2014-09 Revenue from Contracts with Customers (Topic 606) issued by the FASB which establishes principles that an entity shall apply to report useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows from a contract with a customer. Topic 606 allows for either “full retrospective” adoption, meaning the standard is applied to all periods presented, or “modified retrospective” adoption, meaning the standard is applied only to the most current period presented in the financial statements. Topic 606 requires the company to recognize revenue for certain transactions, including extended payment term software licenses and short-term software licenses, sooner than the prior rules would allow and requires the company to recognize software license extensions and renewals (the most significant impact upon adoption), later than the prior rules would allow. Topic 606 also requires significantly expanded disclosure requirements. The company has adopted the standard using the modified retrospective method and applied the standard to all contracts that were not completed as of January 1, 2018. The cumulative effect of the adoption was recognized as an increase in the company’s accumulated deficit of $21.4 million on January 1, 2018.

The following table summarizes the effects of adopting this standard on the company’s consolidated financial statements as of and for the three months ended March 31, 2018.



	As Reported			Adjustments			Balances Without Adoption of Topic 606
For the three months ended March 31, 2018
Statement of Income
Revenue
Services	$	568.5		$	2.8		$	571.3
Technology	139.9			(76.8		)	63.1
Costs and expenses
Cost of revenue
Services	470.9			1.8			472.7
Technology	36.3			(0.9		)	35.4
Selling, general and administrative expenses	90.9			0.2			91.1
Operating income	101.8			(75.1		)	26.7
Income before income taxes	62.6			(75.1		)	(12.5		)
Provision for income taxes	20.9			(9.5		)	11.4
Consolidated net income	41.7			(65.6		)	(23.9		)
Net income attributable to Unisys Corporation	40.6			(65.6		)	(25.0		)

As of March 31, 2018
Balance Sheet
Assets
Accounts receivable, net current	492.5			39.1			531.6
Contract assets	46.4			(46.4		)	—
Inventories	22.2			(1.6		)	20.6
Prepaid expenses and other current assets	115.3			1.5			116.8
Outsourcing assets, net	213.4			3.5			216.9
Deferred income taxes - long-term	116.0			1.7			117.7
Other long-term assets	207.1			(24.1		)	183.0
Total assets	2,513.7			(26.3		)	2,487.4
Liabilities
Deferred revenue - current	324.8			15.2			340.0
Other accrued liabilities - current	344.4			(11.8		)	332.6
Long-term deferred revenue	184.9			9.0			193.9
Other long-term liabilities	95.9			5.5			101.4
Equity
Accumulated deficit	(1,943.9		)	(44.2		)	(1,988.1		)
Total liabilities and deficit	2,513.7			(26.3		)	2,487.4

Included in the technology revenue adjustments in the above table is $53.0 million of revenue from software license extensions and renewals which were contracted for in the fourth quarter of 2017 and properly recorded as revenue at that time under the revenue recognition rules then in effect (Topic 605). Upon adoption of the new revenue recognition rules (Topic 606) on January 1, 2018, and since the company adopted Topic 606 under the modified retrospective method whereby prior periods were not restated, the company was required to include this $53.0 million in the cumulative effect adjustment to retained earnings on January 1, 2018. Topic 606 requires revenue related to software license renewals or extensions to be recorded when the new license term begins, which in the case of the $53.0 million is January 1, 2018. The company has excluded revenue and related profit for these software licenses in the above table. This is a one-time adjustment and it will not reoccur in future periods. There are additional adjustments being made in the above table, but they do not represent previously recorded revenue. Those additional adjustments represent other differences between Topic 605 and Topic 606, principally extended payment term software licenses and short-term software licenses both of which are recorded at the inception of the license term under Topic 606, but were required to be recognized ratably over the software license term under Topic 605.

Accounting Pronouncements Not Yet Adopted

In February 2018, the FASB issued ASU No. 2018-02 Income Statement - Reporting Comprehensive Income (Topic 220), which permits companies to reclassify stranded tax effects in accumulated other comprehensive income (AOCI) caused by the U.S. Tax Cuts and Jobs Act of 2017 (TCJA) to retained earnings. In addition, a company is required to disclose a description of its accounting policy for releasing income tax effects from AOCI. This update is effective for annual reporting periods beginning after December 15, 2018, with earlier adoption permitted. The new standard can be applied retrospectively, meaning it is applied to all periods in which the income tax effects of the TCJA related to items remaining in AOCI are recognized, or at the beginning of the period of adoption. The company is currently assessing when it will choose to adopt, and is currently evaluating the impact of the adoption on its consolidated financial position.

In June 2016, the FASB issued ASU No. 2016-13 Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected losses. This includes trade and other receivables, loans and other financial instruments. This update is effective for annual periods beginning after December 15, 2019, with earlier adoption permitted. The company is currently assessing when it will choose to adopt, and is currently evaluating the impact of the adoption on its consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02 Leases (Topic 842), which is intended to improve financial reporting about leasing transactions. The ASU requires organizations that lease assets, referred to as lessees, to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The standard requires disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases. The standard is effective for annual reporting periods beginning after December 15, 2018, with earlier adoption permitted. The company will adopt the new guidance on January 1, 2019, and is currently evaluating the impact of the adoption on its consolidated results of operations and financial position.

Cost-Reduction Actions

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Cost Reduction Actions

Cost-Reduction Actions

There were no additional cost-reduction charges recorded during the three months ended March 31, 2018; however, $2.9 million was recorded as income for changes in estimates in the current quarter.

During the three months ended March 31, 2017, the company recognized cost-reduction charges and other costs of $25.4 million. Charges related to work-force reductions were $12.5 million, principally related to severance costs, and were comprised of: (a) a charge of $0.5 million for 45 employees and $(0.1) million for changes in estimates in the U.S. and (b) a charge of $4.2 million for 75 employees, $8.2 million for additional benefits provided in 2017 and $(0.3) million for changes in estimates outside the U.S. In addition, the company recorded charges of $12.9 million comprised of $2.9 million for idle leased facilities costs, $3.3 million for contract amendment and termination costs, $1.4 million for professional fees and other expenses related to the cost-reduction effort and $5.3 million for foreign currency losses related to exiting a foreign country. The charges were recorded in the following statement of income classifications: cost of revenue – services, $8.5 million; selling, general and administrative expenses, $11.3 million; research and development expenses, $0.3 million; and other income (expense), net, $5.3 million.

Liabilities and expected future payments related to the company’s cost-reduction actions are as follows:



				Work-Force Reductions						Idle Leased Facilities Costs
	Total			U.S.			International			Idle Leased Facilities Costs
Balance at December 31, 2017	$	117.8		$	3.9		$	109.6		$	4.3
Payments	(16.5		)	(1.7		)	(14.2		)	(0.6		)
Changes in estimates	(2.9		)	(1.2		)	(1.8		)	0.1
Translation adjustments	2.9			—			2.8			0.1
Balance at March 31, 2018	$	101.3		$	1.0		$	96.4		$	3.9
Expected future utilization on balance at March 31, 2018:
2018 remaining nine months	$	69.4		$	1.0		$	67.1		$	1.3
Beyond 2018	$	31.9		$	—		$	29.3		$	2.6

Pension and Postretirement Benefits

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Pension and Postretirement Benefits

Net periodic pension expense for the three months ended March 31, 2018 and 2017 is presented below:



	Three Months Ended March 31, 2018									Three Months Ended March 31, 2017
	Total			U.S. Plans			International Plans			Total			U.S. Plans			International Plans
Service cost⁽ⁱ⁾	$	0.8		$	—		$	0.8		$	1.6		$	—		$	1.6
Interest cost	64.0			46.6			17.4			69.9			52.5			17.4
Expected return on plan assets	(87.2		)	(57.6		)	(29.6		)	(89.4		)	(58.8		)	(30.6		)
Amortization of prior service benefit	(1.5		)	(0.6		)	(0.9		)	(1.3		)	(0.6		)	(0.7		)
Recognized net actuarial loss	42.1			31.2			10.9			43.7			30.9			12.8
Net periodic pension expense (benefit)	$	18.2		$	19.6		$	(1.4	)	$	24.5		$	24.0		$	0.5



⁽ⁱ⁾	Service cost is reported in cost of revenue - services and selling, general and administrative expenses. All other components of net periodic pension expense are reported in other income (expense), net in the Consolidated Statements of Income.

In 2018, the company expects to make cash contributions of approximately $150.6 million to its worldwide defined benefit pension plans, which are comprised of $86.3 million for the company’s U.S. qualified defined benefit pension plans and $64.3 million primarily for the company’s non-U.S. defined benefit pension plans. In 2017, the company made cash contributions of $138.4 million to its worldwide defined benefit pension plans. For the three months ended March 31, 2018 and 2017, the company made cash contributions of $27.4 million and $28.9 million, respectively.

Net periodic postretirement benefit expense for the three months ended March 31, 2018 and 2017 is presented below:



	Three Months Ended March 31,
	2018			2017
Service cost⁽ⁱ⁾	$	0.2		$	0.1
Interest cost	1.2			1.5
Expected return on assets	(0.1		)	(0.1		)
Recognized net actuarial loss	0.3			0.3
Amortization of prior service benefit	(0.5		)	(0.1		)
Net periodic postretirement benefit expense	$	1.1		$	1.7



⁽ⁱ⁾	Service cost is reported in selling, general and administrative expenses. All other components of net periodic postretirement benefit expense are reported in other income (expense), net in the Consolidated Statements of Income.

The company expects to make cash contributions of approximately $12.0 million to its postretirement benefit plan in 2018 compared to $12.2 million in 2017. For the three months ended March 31, 2018 and 2017, the company made cash contributions of $3.5 million and $2.8 million, respectively.

Stock Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Compensation

Under stockholder approved stock-based plans, stock options, stock appreciation rights, restricted stock and restricted stock units may be granted to officers, directors and other key employees. At March 31, 2018, 2.1 million shares of unissued common stock of the company were available for granting under these plans.

As of March 31, 2018, the company has granted non-qualified stock options and restricted stock units under these plans. The company recognizes compensation cost net of a forfeiture rate in selling, general and administrative expenses, and recognizes compensation cost only for those awards expected to vest. The company estimates the forfeiture rate based on its historical experience and its expectations about future forfeitures.

During the three months ended March 31, 2018 and 2017, the company recorded $4.0 million and $3.7 million of share-based compensation expense, respectively, which was comprised of $3.9 million and $3.4 million of restricted stock unit expense and $0.1 million and $0.3 million of stock option expense, respectively.

There were no grants of stock option awards during the three months ended March 31, 2018 and 2017.

A summary of stock option activity for the three months ended March 31, 2018 follows (shares in thousands):



	Stock Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at December 31, 2017	1,758		$	26.35
Granted	—		—
Exercised	—		—
Forfeited and expired	(533	)	23.93
Outstanding at March 31, 2018	1,225		27.41		1.94	$	—
Expected to vest at March 31, 2018	20		16.83		4.38	—
Exercisable at March 31, 2018	1,204		27.59		1.89	—

Restricted stock unit awards may contain time-based units, performance-based units, total shareholder return market-based units, or a combination of these units. Each performance-based and market-based unit will vest into zero to two shares depending on the degree to which the performance or market conditions are met. Compensation expense for performance-based awards is recognized as expense ratably for each installment from the date of grant until the date the restrictions lapse, and is based on the fair market value at the date of grant and the probability of achievement of the specific performance-related goals. Compensation expense for market-related awards is recognized as expense ratably over the measurement period, regardless of the actual level of achievement, provided the service requirement is met.

A summary of restricted stock unit activity for the three months ended March 31, 2018 follows (shares in thousands):



	Restricted Stock Units		Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2017	1,688		$	13.39
Granted	1,373		12.77
Vested	(696	)	13.09
Forfeited and expired	(28	)	12.80
Outstanding at March 31, 2018	2,337		13.15

The aggregate weighted-average grant-date fair value of restricted stock units granted during the three months ended March 31, 2018 and 2017 was $17.3 million and $13.4 million, respectively. The fair value of restricted stock units with time and performance conditions was determined based on the trading price of the company’s common shares on the date of grant. The fair value of awards with market conditions was estimated using a Monte Carlo simulation with the following weighted-average assumptions:



	Three Months Ended March 31, 2018
Weighted-average fair value of grant	$	15.84
Risk-free interest rate⁽ⁱ⁾	2.26		%
Expected volatility⁽ⁱⁱ⁾	52.97		%
Expected life of restricted stock units in years⁽ⁱⁱⁱ⁾	2.88
Expected dividend yield	—		%



⁽ⁱ⁾	Represents the continuously compounded semi-annual zero-coupon U.S. treasury rate commensurate with the remaining performance period
⁽ⁱⁱ⁾	Based on historical volatility for the company that is commensurate with the length of the performance period
⁽ⁱⁱⁱ⁾	Represents the remaining life of the longest performance period

As of March 31, 2018, there was $23.0 million of total unrecognized compensation cost related to outstanding restricted stock units granted under the company’s plans. That cost is expected to be recognized over a weighted-average period of 2.5 years. The aggregate weighted-average grant-date fair value of restricted stock units vested during the three months ended March 31, 2018 and 2017 was $9.1 million and $6.3 million, respectively.

Common stock issued upon lapse of restrictions on restricted stock units are newly issued shares. In light of its tax position, the company is currently not recognizing any tax benefits upon issuance of stock upon lapse of restrictions on restricted stock units. Tax benefits resulting from tax deductions in excess of the compensation costs recognized are classified as operating cash flows.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Accounting rules governing income taxes require that deferred tax assets and liabilities be recognized using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. These rules also require that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some portion or the entire deferred tax asset will not be realized. The company evaluates the realizability of its deferred tax assets by assessing its valuation allowance and by adjusting the amount of such allowance, if necessary. The factors used to assess the likelihood of realization are the company’s historical profitability, forecast of future taxable income and available tax-planning strategies that could be implemented to realize the net deferred tax assets. The company uses tax-planning strategies to realize or renew net deferred tax assets to avoid the potential loss of future tax benefits. A full valuation allowance is currently maintained for all U.S. and certain foreign deferred tax assets in excess of deferred tax liabilities. The company will record a tax provision or benefit for those international subsidiaries that do not have a full valuation allowance against their net deferred tax assets. Any profit or loss recorded for the company’s U.S. operations will have no provision or benefit associated with it due to such valuation allowance, except with respect to withholding taxes not creditable against future taxable income. As a result, the company’s provision or benefit for taxes may vary significantly depending on the geographic distribution of income.

Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

The following table shows how earnings (loss) per share attributable to Unisys Corporation was computed for the three months ended March 31, 2018 and 2017 (shares in thousands):



	Three Months Ended March 31,
	2018		2017
Basic earnings (loss) per common share computation:
Net income (loss) attributable to Unisys Corporation	$	40.6	$	(32.7	)
Weighted average shares	50,748		50,256
Basic earnings (loss) per common share	$	0.80	$	(0.65	)
Diluted earnings (loss) per common share computation:
Net income (loss) attributable to Unisys Corporation	$	40.6	$	(32.7	)
Add interest expense on convertible senior notes, net of tax of zero	4.8		—
Net income (loss) attributable to Unisys Corporation for diluted earnings per share	$	45.4	$	(32.7	)
Weighted average shares	50,748		50,256
Plus incremental shares from assumed conversions:
Employee stock plans	327		—
Convertible senior notes	21,868		—
Adjusted weighted average shares	72,943		50,256
Diluted earnings (loss) per common share	$	0.62	$	(0.65	)

Anti-dilutive weighted-average stock options and restricted stock units⁽ⁱ⁾	2,044		2,355
Anti-dilutive weighted-average common shares issuable upon conversion of the 5.50% convertible senior notes⁽ⁱ⁾	—		21,868



⁽ⁱ⁾	Amounts represent shares excluded from the computation of diluted earnings per share, as their effect, if included, would have been anti-dilutive for the periods presented.

Financial Instruments and Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Financial Instruments and Fair Value Measurements

Due to its foreign operations, the company is exposed to the effects of foreign currency exchange rate fluctuations on the U.S. dollar, principally related to intercompany account balances. The company uses derivative financial instruments to reduce its exposure to market risks from changes in foreign currency exchange rates on such balances. The company enters into foreign exchange forward contracts, generally having maturities of three months or less, which have not been designated as hedging instruments. At March 31, 2018 and December 31, 2017, the notional amount of these contracts was $557.0 million and $514.0 million, respectively. The fair value of these forward contracts is based on quoted prices for similar but not identical financial instruments; as such, the inputs are considered Level 2 inputs.

The following table summarizes the fair value of the company’s foreign exchange forward contracts as of March 31, 2018 and December 31, 2017.



	March 31, 2018		December 31, 2017
Balance Sheet Location
Prepaid expenses and other current assets	$	1.1	$	4.9
Other accrued liabilities	1.1		1.6
Total fair value	$	—	$	3.3

The following table summarizes the location and amount of gains and losses recognized on foreign exchange forward contracts for the three months ended March 31, 2018 and 2017.



	Three months ended March 31,
	2018		2017
Statement of Income Location
Other income (expense), net	$	10.7	$	5.7

Financial assets with carrying values approximating fair value include cash and cash equivalents and accounts receivable. Financial liabilities with carrying values approximating fair value include accounts payable and other accrued liabilities. The carrying amounts of these financial assets and liabilities approximate fair value due to their short maturities. Such financial instruments are not included in the following table that provides information about the estimated fair values of other financial instruments that are not measured at fair value in the consolidated balance sheets as of March 31, 2018 and December 31, 2017.



	March 31, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt:
10.75% senior secured notes due 2022	$	430.2	$	495.0	$	429.6	$	492.8
5.50% convertible senior notes due 2021	$	188.2	$	279.9	$	186.3	$	237.9

Long-term debt is carried at amortized cost and its estimated fair value is based on market prices classified as Level 2 in the fair value hierarchy.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Goodwill

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

At March 31, 2018, the amount of goodwill allocated to reporting units with negative net assets was as follows: Business Process Outsourcing Services, $10.8 million.

Changes in the carrying amount of goodwill by segment for the three months ended March 31, 2018 was as follows:



	Total		Services		Technology
Balance at December 31, 2017	$	180.8	$	72.1	$	108.7
Translation adjustments	0.2		0.2		—
Balance at March 31, 2018	$	181.0	$	72.3	$	108.7

Debt

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt

Long-term debt is comprised of the following:



	March 31, 2018		December 31, 2017
10.75% senior secured notes due April 15, 2022 ($440.0 million face value less unamortized discount and fees of $9.8 million and $10.4 million at March 31, 2018 and December 31, 2017, respectively)	$	430.2	$	429.6
5.50% convertible senior notes due March 1, 2021 ($213.5 million face value less unamortized discount and fees of $25.3 million and $27.2 million at March 31, 2018 and December 31, 2017, respectively)	188.2		186.3
Capital leases	7.7		7.5
Other debt	20.7		21.3
Total	646.8		644.7
Less – current maturities	10.6		10.8
Total long-term debt	$	636.2	$	633.9

See Note 9 for the fair value of the notes in the table above.

Senior Secured Notes

In 2017, the company issued $440.0 million aggregate principal amount of 10.75% Senior Secured Notes due 2022 (the “2022 Notes”). The 2022 Notes are initially fully and unconditionally guaranteed on a senior secured basis by Unisys Holding Corporation, Unisys AP Investment Company I and Unisys NPL, Inc. (together with the Company, the “Grantors”). In the future, the 2022 Notes will be guaranteed by each material domestic subsidiary and each restricted subsidiary that guarantees the secured revolving credit facility and other indebtedness of the company or another subsidiary guarantor. The 2022 Notes and the guarantees will rank equally in right of payment with all of the existing and future senior debt of the company and the subsidiary guarantors. The 2022 Notes and the guarantees will be structurally subordinated to all existing and future liabilities (including preferred stock, trade payables and pension liabilities) of the company’s subsidiaries that are not subsidiary guarantors.

The 2022 Notes pay interest semiannually on April 15 and October 15 at an annual rate of 10.75%, and will mature on April 15, 2022, unless earlier repurchased or redeemed.

The company may, at its option, redeem some or all of the 2022 Notes at any time on or after April 15, 2020 at a redemption price determined in accordance with the redemption schedule set forth in the indenture governing the 2022 Notes (the “indenture”), plus accrued and unpaid interest, if any.

Prior to April 15, 2020, the company may, at its option, redeem some or all of the 2022 Notes at any time, at a price equal to 100% of the principal amount of the 2022 Notes redeemed plus a “make-whole” premium, plus accrued and unpaid interest, if any. The company may also redeem, at its option, up to 35% of the 2022 Notes at any time prior to April 15, 2020, using the proceeds of certain equity offerings at a redemption price of 110.75% of the principal amount thereof, plus accrued and unpaid interest, if any. In addition, the company may redeem all (but not less than all) of the 2022 Notes at any time that the Collateral Coverage Ratio is less than the Required Collateral Coverage Ratio (as such terms are described below and further defined in the indenture) at a price equal to 100% of the principal amount of the 2022 Notes plus accrued and unpaid interest, if any.

The indenture contains covenants that limit the ability of the company and its restricted subsidiaries to, among other things: (i) incur additional indebtedness and guarantee indebtedness; (ii) pay dividends or make other distributions or repurchase or redeem its capital stock; (iii) prepay, redeem or repurchase certain debt; (iv) make certain prepayments in respect of pension obligations; (v) issue certain preferred stock or similar equity securities; (vi) make loans and investments (including investments by the company and subsidiary guarantors in subsidiaries that are not guarantors); (vii) sell assets; (viii) create or incur liens; (ix) enter into transactions with affiliates; (x) enter into agreements restricting its subsidiaries’ ability to pay dividends; and (xi) consolidate, merge or sell all or substantially all of its assets. These covenants are subject to several important limitations and exceptions.

The indenture also includes a covenant requiring that the company maintain a Collateral Coverage Ratio of not less than 1.50:1.00 (the “Required Collateral Coverage Ratio”) as of any test date. The Collateral Coverage Ratio is based on the ratio of (A) Grantor unrestricted cash and cash equivalents plus 4.75 multiplied by of the greater of (x) Grantor EBITDA for the most recently ended four fiscal quarters and (y) (i) the average quarterly Grantor EBITDA for the most recently ended seven fiscal quarters, multiplied by (ii) four, to (B) secured indebtedness of the Grantors. The Collateral Coverage Ratio is tested quarterly. If the Collateral Coverage Ratio is less than the Required Collateral Coverage Ratio as of any test date, and the company has not redeemed the 2022 Notes within 90 days thereafter, this will be an event of default under the indenture.

If the company experiences certain kinds of changes of control, it must offer to purchase the 2022 Notes at 101% of the principal amount of the 2022 Notes, plus accrued and unpaid interest, if any. In addition, if the company sells assets under certain circumstances it must apply the proceeds towards an offer to repurchase the 2022 Notes at a price equal to par plus accrued and unpaid interest, if any.

The indenture also provides for events of default, which, if any of them occurs, would permit or require the principal, premium, if any, interest and any other monetary obligations on all the then outstanding 2022 Notes to be due and payable immediately.

Convertible Senior Notes

In 2016, the company issued $213.5 million aggregate principal amount of Convertible Senior Notes due 2021 (the “2021 Notes”). The 2021 Notes, which are senior unsecured obligations, bear interest at a coupon rate of 5.50% (or 9.5% effective interest rate) per year until maturity, payable semiannually in arrears on March 1 and September 1 of each year. The 2021 Notes are not redeemable prior to maturity and are convertible into shares of the company’s common stock. The conversion rate for the 2021 Notes is 102.4249 shares of the company’s common stock per $1,000 principal amount of the 2021 Notes (or a total amount of 21,867,716 shares), which is equivalent to an initial conversion price of approximately $9.76 per share of the company’s common stock. Upon any conversion, the company will settle its conversion obligation in cash, shares of its common stock, or a combination of cash and shares of its common stock, at its election.

In connection with the issuance of the 2021 Notes, the company also paid $27.3 million to enter into privately negotiated capped call transactions with the initial purchasers and/or affiliates of the initial purchasers. The capped call transactions will cover, subject to customary anti-dilution adjustments, the number of shares of the company’s common stock that will initially underlie the 2021 Notes. The capped call transactions will effectively raise the conversion premium on the 2021 Notes from approximately 22.5% to approximately 60%, which raises the initial conversion price from approximately $9.76 per share of common stock to approximately $12.75 per share of common stock. The capped call transactions are expected to reduce potential dilution to the company’s common stock and/or offset potential cash payments the company is required to make in excess of the principal amount upon any conversion of the 2021 Notes.

Interest expense related to the 2021 notes for the three month periods ended March 31, 2018 and 2017 was as follows:



	Three Months Ended March 31,
	2018		2017
Contractual interest coupon	$	2.9	$	2.9
Amortization of debt discount	1.6		1.5
Amortization of debt issuance costs	0.3		0.3
Total	$	4.8	$	4.7

Revolving Credit Facility

The company has a secured revolving credit facility (the “Credit Agreement”) that provides for loans and letters of credit up to an aggregate amount of $125.0 million (with a limit on letters of credit of $30.0 million). The Credit Agreement includes an accordion feature allowing for an increase in the amount of the facility up to $150.0 million. Availability under the credit facility is subject to a borrowing base calculated by reference to the company’s receivables. At March 31, 2018, the company had no borrowings and $4.7 million of letters of credit outstanding, and availability under the facility was $113.1 million net of letters of credit issued. The Credit Agreement expires October 5, 2022, subject to a springing maturity (i) on the date that is 91 days prior to the maturity date of the 2021 Notes unless, on such date, certain conditions are met; or (ii) on the date that is 60 days prior to the maturity date of the 2022 Notes unless, by such date, such secured notes have not been redeemed or refinanced.

The credit facility is guaranteed by Unisys Holding Corporation, Unisys NPL, Inc., Unisys AP Investment Company I and any future material domestic subsidiaries. The facility is secured by the assets of the company and the subsidiary guarantors, other than certain excluded assets, under a security agreement entered into by the company and the subsidiary guarantors in favor of JPMorgan Chase Bank, N.A., as agent for the lenders under the new credit facility.

The company is required to maintain a minimum fixed charge coverage ratio if the availability under the credit facility falls below the greater of 10% of the lenders’ commitments under the facility and $15.0 million.

The Credit Agreement contains customary representations and warranties, including that there has been no material adverse change in the company’s business, properties, operations or financial condition. The Credit Agreement includes limitations on the ability of the company and its subsidiaries to, among other things, incur other debt or liens, dispose of assets and make acquisitions, loans and investments, repurchase its equity, and prepay other debt. Events of default include non-payment, failure to comply with covenants, materially incorrect representations and warranties, change of control and default under other debt aggregating at least $50.0 million.

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies There are various lawsuits, claims, investigations and proceedings that have been brought or asserted against the company, which arise in the ordinary course of business, including actions with respect to commercial and government contracts, labor and employment, employee benefits, environmental matters, intellectual property and non-income tax matters. The company records a provision for these matters when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Any provisions are reviewed at least quarterly and are adjusted to reflect the impact and status of settlements, rulings, advice of counsel and other information and events pertinent to a particular matter. The company believes that it has valid defenses with respect to legal matters pending against it. Based on its experience, the company also believes that the damage amounts claimed in the lawsuits disclosed below are not a meaningful indicator of the company’s potential liability. Litigation is inherently unpredictable, however, and it is possible that the company’s results of operations or cash flow could be materially affected in any particular period by the resolution of one or more of the legal matters pending against it. In April 2007, the Ministry of Justice of Belgium sued Unisys Belgium SA-NV, a Unisys subsidiary (Unisys Belgium), in the Court of First Instance of Brussels. The Belgian government had engaged the company to design and develop software for a computerized system to be used to manage the Belgian court system. The Belgian State terminated the contract and in its lawsuit has alleged that the termination was justified because Unisys Belgium failed to deliver satisfactory software in a timely manner. It claims damages of approximately €28 million. Unisys Belgium filed its defense and counterclaim in April 2008, in the amount of approximately €18.5 million. The company believes it has valid defenses to the claims and contends that the Belgian State’s termination of the contract was unjustified. The company’s Brazilian operations, along with those of many other companies doing business in Brazil, are involved in various litigation matters, including numerous governmental assessments related to indirect and other taxes, as well as disputes associated with former employees and contract labor. The tax-related matters pertain to value added taxes, customs, duties, sales and other non-income related tax exposures. The labor-related matters include claims related to compensation matters. The company believes that appropriate accruals have been established for such matters based on information currently available. At March 31, 2018, excluding those matters that have been assessed by management as being remote as to the likelihood of ultimately resulting in a loss, the amount related to unreserved tax-related matters, inclusive of any related interest, is estimated to be up to approximately $137.5 million. On June 26, 2014, the State of Louisiana filed a Petition for Damages against, among other defendants, the company and Molina Information Systems, LLC, in the Parish of East Baton Rouge, 19th Judicial District. The State alleged that between 1989 and 2012 the defendants, each acting successively as the State’s Medicaid fiscal intermediary, utilized an incorrect reimbursement formula for the payment of pharmaceutical claims causing the State to pay excessive amounts for prescription drugs. The State contends overpayments of approximately $68 million for the period January 2002 through July 2011 and is seeking data to identify the claims at issue for the remaining time period. The company believes that it has valid defenses to Louisiana’s claims and is asserting them in the pending litigation. With respect to the specific legal proceedings and claims described above, except as otherwise noted, either (i) the amount or range of possible losses in excess of amounts accrued, if any, is not reasonably estimable or (ii) the company believes that the amount or range of possible losses in excess of amounts accrued that are estimable would not be material. Litigation is inherently unpredictable and unfavorable resolutions could occur. Accordingly, it is possible that an adverse outcome from such matters could exceed the amounts accrued in an amount that could be material to the company’s financial condition, results of operations and cash flows in any particular reporting period. Notwithstanding that the ultimate results of the lawsuits, claims, investigations and proceedings that have been brought or asserted against the company are not currently determinable, the company believes that at March 31, 2018, it has adequate provisions for any such matters.

Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income

Accumulated other comprehensive income (loss) as of December 31, 2017 and March 31, 2018 is as follows:



	Total			Translation Adjustments			Postretirement Plans
Balance at December 31, 2017	$	(3,815.8	)	$	(817.0	)	$	(2,998.8	)
Other comprehensive income before reclassifications	(6.0		)	(5.8		)	(0.2		)
Amounts reclassified from accumulated other comprehensive income	38.7			—			38.7
Current period other comprehensive income	32.7			(5.8		)	38.5
Balance at March 31, 2018	$	(3,783.1	)	$	(822.8	)	$	(2,960.3	)

Amounts reclassified out of accumulated other comprehensive income for the three months ended March 31, 2018 and 2017 are as follows:



	Three Months Ended March 31,
	2018			2017
Translation Adjustments⁽ⁱ⁾:
Adjustment for substantial completion of liquidation of foreign subsidiaries	$	—		$	(5.3	)
Postretirement Plans⁽ⁱⁱ⁾:
Amortization of prior service cost	(1.8		)	(1.4		)
Amortization of actuarial losses	41.8			43.3
Total before tax	40.0			36.6
Income tax benefit	(1.3		)	(1.7		)
Total reclassification for the period	$	38.7		$	34.9



⁽ⁱ⁾	Reported in other income (expense), net in the consolidated statements of income
⁽ⁱⁱ⁾	These items are included in net periodic postretirement cost (see Note 5).

Noncontrolling interests as of December 31, 2017 and March 31, 2018 are as follows:



	Noncontrolling Interests
Balance at December 31, 2017	$	28.2
Net income	1.1
Translation adjustments	0.8
Postretirement plans	0.4
Balance at March 31, 2018	$	30.5

Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information



	Three Months Ended March 31,
	2018		2017
Cash paid during the period for:
Income taxes, net of refunds	$	13.6	$	16.0
Interest	$	6.3	$	9.0

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the Consolidated Balance Sheets to the total of the amounts shown in the Consolidated Statements of Cash Flows.



	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	656.4	$	733.9
Restricted cash	26.6		30.2
Total cash, cash equivalents and restricted cash shown in the Consolidated Statements of Cash Flows	$	683.0	$	764.1

Cash and cash equivalents subject to contractual restrictions and not readily available are classified as restricted cash. Restricted cash primarily consists of cash the company is contractually obligated to maintain in accordance with the terms of its U.K. business process outsourcing joint venture agreement.

Segment Information

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

As described in Note 3, effective January 1, 2018, the company adopted the requirements of Topic 606 which resulted in an adjustment to Technology revenue and profit of $53.0 million in the first quarter of 2018. The adjustment represents revenue from software license extensions and renewals, which were contracted for in the fourth quarter of 2017 and properly recorded as revenue at that time under the revenue recognition rules then in effect (Topic 605). Topic 606 requires revenue related to software license renewals or extensions to be recorded when the new license term begins, which in the case of the $53.0 million, is January 1, 2018.

Effective January 1, 2018, the company changed the grouping of certain of its classes of services. As a result, prior-periods’ customer revenue by classes of similar services have been reclassified to conform to the current-year period.

The company has two business segments: Services and Technology. Revenue classifications within the Services and Technology segment are as follows:


•	Cloud & infrastructure services. This represents revenue from helping clients apply cloud and as-a-service delivery models to capitalize on business opportunities, make their end users more productive and manage and secure their IT infrastructure and operations more economically.


•	Application services. This represents revenue from helping clients transform their business processes by developing and managing new leading-edge applications for select industries, offering advanced data analytics and modernizing existing enterprise applications.


•	Business process outsourcing (BPO) services. This represents revenue from the management of critical processes and functions for clients in target industries, helping them improve performance and reduce costs.


•	Technology. This represents revenue from designing and developing software and offering hardware and other related products to help clients reduce costs, improve security and flexibility and improve the efficiency of their data-center environments.

The accounting policies of each business segment are the same as those followed by the company as a whole. Intersegment sales and transfers are priced as if the sales or transfers were to third parties. Accordingly, the Technology segment recognizes intersegment revenue and manufacturing profit on hardware and software shipments to customers under Services contracts. The Services segment, in turn, recognizes customer revenue and marketing profits on such shipments of company hardware and software to customers. The Services segment also includes the sale of hardware and software products sourced from third parties that are sold to customers through the company’s Services channels. In the company’s Consolidated Statements of Income, the manufacturing costs of products sourced from the Technology segment and sold to Services customers are reported in cost of revenue for Services.

Also included in the Technology segment’s sales and operating profit are sales of hardware and software sold to the Services segment for internal use in Services engagements. The amount of such profit included in operating income of the Technology segment for the three months ended March 31, 2018 and 2017 was zero and $0.1 million, respectively. The sales and profit on these transactions are eliminated in Corporate.

The company evaluates business segment performance based on operating income exclusive of the service cost component of postretirement income or expense, restructuring charges and unusual and nonrecurring items, which are included in Corporate. All other corporate and centrally incurred costs are allocated to the business segments based principally on revenue, employees, square footage or usage.

A summary of the company’s operations by business segment for the three month periods ended March 31, 2018 and 2017 is presented below:



	Total			Corporate			Services		Technology
Three Months Ended March 31, 2018
Customer revenue	$	708.4		$	—		$	568.5	$	139.9
Intersegment	—			(10.0		)	—		10.0
Total revenue	$	708.4		$	(10.0	)	$	568.5	$	149.9
Operating income	$	101.8		$	2.7		$	17.1	$	82.0

Three Months Ended March 31, 2017
Customer revenue	$	664.5		$	—		$	585.3	$	79.2
Intersegment	—			(5.3		)	—		5.3
Total revenue	$	664.5		$	(5.3	)	$	585.3	$	84.5
Operating income (loss)	$	21.8	*	$	(18.5	)*	$	27.3	$	13.0



*	Amounts were changed to conform to the current-year presentation. See Note 3.

Presented below is a reconciliation of total business segment operating income to consolidated income (loss) before income taxes:



	Three Months Ended March 31,
	2018			2017
Total segment operating income	$	99.1		$	40.3
Interest expense	(16.6		)	(5.7		)
Other income (expense), net	(22.6		)	(32.9		)	*
Cost-reduction charges⁽ⁱ⁾	2.9			(20.1		)
Corporate and eliminations	(0.2		)	1.6			*
Total income (loss) before income taxes	$	62.6		$	(16.8	)



*	Amounts were changed to conform to the current-year presentation. See Note 3.
⁽ⁱ⁾	The three months ended March 31, 2017 excludes $5.3 million for net foreign currency losses related to exiting foreign countries which are reported in other income (expense), net in the consolidated statements of income.

Customer revenue by classes of similar products or services, by segment, is presented below:



	Three Months Ended March 31,
	2018		2017
Services
Cloud & infrastructure services	$	318.4	$	337.4	*
Application services	192.9		199.4		*
Business process outsourcing services	57.2		48.5
	568.5		585.3
Technology	139.9		79.2
Total	$	708.4	$	664.5



*	Amounts were changed to conform to the current-year presentation.

Geographic information about the company’s revenue, which is principally based on location of the selling organization, is presented below:



	Three Months Ended March 31,
	2018		2017
United States	$	286.5	$	333.8
United Kingdom	114.8		78.9
Other foreign	307.1		251.8
Total	$	708.4	$	664.5

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Revenue recognition

Revenue is recognized at an amount that reflects the consideration to which the company expects to be entitled in exchange for transferring goods and services to a customer. The company determines revenue recognition using the following five steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the company satisfies a performance obligation.

Revenue excludes taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the company from a customer (e.g., sales, use and value added taxes). Revenue includes payments for shipping and handling activities.

At contract inception, the company assesses the goods and services promised in a contract with a customer and identifies as a performance obligation each promise to transfer to the customer either: (1) a good or service (or a bundle of goods or services) that is distinct or (2) a series of distinct goods or services that are substantially the same and that have the same pattern of transfer to the customer. The company recognizes revenue only when it satisfies a performance obligation by transferring a promised good or service to a customer.

The company must apply its judgment to determine the timing of the satisfaction of performance obligations as well as the transaction price and the amounts allocated to performance obligations including estimating variable consideration, adjusting the consideration for the effects of the time value of money and assessing whether an estimate of variable consideration is constrained.

Revenue from hardware sales is recognized upon the transfer of control to a customer, which is defined as an entity’s ability to direct the use of and obtain substantially all of the remaining benefits of an asset.

Revenue from software licenses is recognized at the inception of either the initial license term or the inception of an extension or renewal to the license term.

Revenue for operating leases is recognized on a monthly basis over the term of the lease and for sales-type leases at the inception of the lease term.

Revenue from equipment and software maintenance and post-contract support is recognized on a straight-line basis as earned over the terms of the respective contracts. Cost related to such contracts is recognized as incurred.

Revenue and profit under systems integration contracts are recognized over time as the company transfers control of goods or services. The company measures its progress toward satisfaction of its performance obligations using the cost-to-cost method, or when services have been performed, depending on the nature of the project. For contracts accounted for using the cost-to-cost method, revenue and profit recognized in any given accounting period are based on estimates of total projected contract costs. The estimates are continually reevaluated and revised, when necessary, throughout the life of a contract. Any adjustments to revenue and profit resulting from changes in estimates are accounted for in the period of the change in estimate. When estimates indicate that a loss will be incurred on a contract upon completion, a provision for the expected loss is recorded in the period in which the loss becomes evident.

Revenue from time and materials service contracts and outsourcing contracts is recognized as the services are provided using either an objective measure of output or on a straight-line basis over the term of the contract.

The company also enters into multiple-element arrangements, which may include any combination of hardware, software or services. For example, a client may purchase an enterprise server that includes operating system software. In addition, the arrangement may include post-contract support for the software and a contract for post-warranty maintenance for service of the hardware. These arrangements consist of multiple performance obligations, with control over hardware and software transferred in one reporting period and the software support and hardware maintenance services performed across multiple reporting periods. In another example, the company may provide desktop managed services to a client on a long-term multiple-year basis and periodically sell hardware and license software products to the client. The services are provided on a continuous basis across multiple reporting periods and control over the hardware and software products occurs in one reporting period. To the extent that a performance obligation in a multiple-deliverable arrangement is subject to specific guidance, that performance obligation is accounted for in accordance with such specific guidance. An example of such an arrangement may include leased assets which are subject to specific leasing accounting guidance.

In multiple-element arrangements, the company allocates the total transaction price to be earned under the arrangement among the various performance obligations in proportion to their standalone selling prices (relative standalone selling price basis). The standalone selling price for a performance obligation is the price at which the company would sell a promised good or service separately to a customer.

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. Many of the company’s contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. For contracts with multiple performance obligations, the company allocates the contract’s transaction price to each performance obligation using its best estimate of the standalone selling price of each distinct good or service in the contract. The primary methods used to estimate standalone selling price are as follows: (1) the expected cost plus margin approach, under which the company forecasts its expected costs of satisfying a performance obligation and then adds an appropriate margin for that distinct good or service and (2) the percent discount off of list price approach.

In the Services segment, substantially all of the company’s performance obligations are satisfied over time as work progresses and therefore substantially all of the revenue in this segment is recognized over time. The company generally receives payment for these contracts over time as the performance obligations are satisfied.

In the Technology segment, substantially all of the company’s goods and services are transferred to customers at a single point in time. Revenue on these contracts is recognized when control over the product is transferred to the customer or a software license term begins. The company generally receives payment for these contracts upon signature or within 30 to 60 days.

At March 31, 2018, the company had approximately $1.5 billion of remaining performance obligations of which approximately 50% is estimated to be recognized as revenue by the end of 2019. The company does not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which the company recognizes revenue at the amount to which it has the right to invoice for services performed.

The company discloses disaggregation of its customer revenue by geographic areas and by classes of similar products and services, by segment (see Note 15).

The timing of revenue recognition, billings and cash collections results in billed accounts receivables, unbilled receivables, contract assets and deferred revenue (contract liabilities). The disclosure of contract assets is a new requirement due to the adoption of Topic 606. At December 31, 2017, contract assets were included in accounts receivables, net on the company’s Consolidated Balance Sheet. At March 31, 2018, $6.0 million of long-term contract assets were included in other long-term assets on the company’s Consolidated Balance Sheet.

Significant changes during the three months ended March 31, 2018 in the above contract asset and liability balances were as follows: revenue of $104.6 million was recognized that was included in deferred revenue at December 31, 2017.

The company’s incremental direct costs of obtaining a contract consist of sales commissions which are deferred and amortized ratably over the initial contract life. These costs are classified as current or noncurrent based on the timing of when the company expects to recognize the expense. The current and noncurrent portions of deferred commissions are included in prepaid expenses and other current assets and in other long-term assets, respectively, in the company’s Consolidated Balance Sheets. At March 31, 2018 and December 31, 2017, the company had $10.1 million and $11.0 million, respectively, of deferred commissions. For the three months ended March 31, 2018, $1.7 million of amortization expense related to deferred commissions was recorded in selling, general and administrative expense in the company’s Consolidated Statement of Income.

Costs to fulfill a contract, which are incurred upon initiation of certain services contracts and are related to initial customer setup, are included in outsourcing assets, net in the company’s Consolidated Balance Sheet. The amount of such cost at March 31, 2018 and December 31, 2017 was $77.1 million and $76.0 million, respectively. These costs are amortized over the initial contract life and reported in services cost of sales. During the three months ended March 31, 2018, $3.6 million was amortized. Recoverability of these costs are subject to various business risks. Quarterly, the company compares the carrying value of these assets with the undiscounted future cash flows expected to be generated by them to determine if there is impairment. If impaired, these assets are reduced to an estimated fair value on a discounted cash flow basis. The company prepares its cash flow estimates based on assumptions that it believes to be reasonable but are also inherently uncertain. Actual cash flows could differ from these estimates.

New accounting pronouncements

Accounting Pronouncements Adopted

The following table summarizes the effects of adopting this standard on the company’s consolidated financial statements as of and for the three months ended March 31, 2018.



	As Reported			Adjustments			Balances Without Adoption of Topic 606
For the three months ended March 31, 2018
Statement of Income
Revenue
Services	$	568.5		$	2.8		$	571.3
Technology	139.9			(76.8		)	63.1
Costs and expenses
Cost of revenue
Services	470.9			1.8			472.7
Technology	36.3			(0.9		)	35.4
Selling, general and administrative expenses	90.9			0.2			91.1
Operating income	101.8			(75.1		)	26.7
Income before income taxes	62.6			(75.1		)	(12.5		)
Provision for income taxes	20.9			(9.5		)	11.4
Consolidated net income	41.7			(65.6		)	(23.9		)
Net income attributable to Unisys Corporation	40.6			(65.6		)	(25.0		)

As of March 31, 2018
Balance Sheet
Assets
Accounts receivable, net current	492.5			39.1			531.6
Contract assets	46.4			(46.4		)	—
Inventories	22.2			(1.6		)	20.6
Prepaid expenses and other current assets	115.3			1.5			116.8
Outsourcing assets, net	213.4			3.5			216.9
Deferred income taxes - long-term	116.0			1.7			117.7
Other long-term assets	207.1			(24.1		)	183.0
Total assets	2,513.7			(26.3		)	2,487.4
Liabilities
Deferred revenue - current	324.8			15.2			340.0
Other accrued liabilities - current	344.4			(11.8		)	332.6
Long-term deferred revenue	184.9			9.0			193.9
Other long-term liabilities	95.9			5.5			101.4
Equity
Accumulated deficit	(1,943.9		)	(44.2		)	(1,988.1		)
Total liabilities and deficit	2,513.7			(26.3		)	2,487.4

Accounting Pronouncements Not Yet Adopted

Accounting Standards (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table summarizes the effects of adopting this standard on the company’s consolidated financial statements as of and for the three months ended March 31, 2018.



	As Reported			Adjustments			Balances Without Adoption of Topic 606
For the three months ended March 31, 2018
Statement of Income
Revenue
Services	$	568.5		$	2.8		$	571.3
Technology	139.9			(76.8		)	63.1
Costs and expenses
Cost of revenue
Services	470.9			1.8			472.7
Technology	36.3			(0.9		)	35.4
Selling, general and administrative expenses	90.9			0.2			91.1
Operating income	101.8			(75.1		)	26.7
Income before income taxes	62.6			(75.1		)	(12.5		)
Provision for income taxes	20.9			(9.5		)	11.4
Consolidated net income	41.7			(65.6		)	(23.9		)
Net income attributable to Unisys Corporation	40.6			(65.6		)	(25.0		)

As of March 31, 2018
Balance Sheet
Assets
Accounts receivable, net current	492.5			39.1			531.6
Contract assets	46.4			(46.4		)	—
Inventories	22.2			(1.6		)	20.6
Prepaid expenses and other current assets	115.3			1.5			116.8
Outsourcing assets, net	213.4			3.5			216.9
Deferred income taxes - long-term	116.0			1.7			117.7
Other long-term assets	207.1			(24.1		)	183.0
Total assets	2,513.7			(26.3		)	2,487.4
Liabilities
Deferred revenue - current	324.8			15.2			340.0
Other accrued liabilities - current	344.4			(11.8		)	332.6
Long-term deferred revenue	184.9			9.0			193.9
Other long-term liabilities	95.9			5.5			101.4
Equity
Accumulated deficit	(1,943.9		)	(44.2		)	(1,988.1		)
Total liabilities and deficit	2,513.7			(26.3		)	2,487.4

Cost-Reduction Actions (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Individual Components of Work Force Reduction and Idle Lease Cost

Liabilities and expected future payments related to the company’s cost-reduction actions are as follows:



				Work-Force Reductions						Idle Leased Facilities Costs
	Total			U.S.			International			Idle Leased Facilities Costs
Balance at December 31, 2017	$	117.8		$	3.9		$	109.6		$	4.3
Payments	(16.5		)	(1.7		)	(14.2		)	(0.6		)
Changes in estimates	(2.9		)	(1.2		)	(1.8		)	0.1
Translation adjustments	2.9			—			2.8			0.1
Balance at March 31, 2018	$	101.3		$	1.0		$	96.4		$	3.9
Expected future utilization on balance at March 31, 2018:
2018 remaining nine months	$	69.4		$	1.0		$	67.1		$	1.3
Beyond 2018	$	31.9		$	—		$	29.3		$	2.6

Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2018

Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Expense

Net periodic pension expense for the three months ended March 31, 2018 and 2017 is presented below:



	Three Months Ended March 31, 2018									Three Months Ended March 31, 2017
	Total			U.S. Plans			International Plans			Total			U.S. Plans			International Plans
Service cost⁽ⁱ⁾	$	0.8		$	—		$	0.8		$	1.6		$	—		$	1.6
Interest cost	64.0			46.6			17.4			69.9			52.5			17.4
Expected return on plan assets	(87.2		)	(57.6		)	(29.6		)	(89.4		)	(58.8		)	(30.6		)
Amortization of prior service benefit	(1.5		)	(0.6		)	(0.9		)	(1.3		)	(0.6		)	(0.7		)
Recognized net actuarial loss	42.1			31.2			10.9			43.7			30.9			12.8
Net periodic pension expense (benefit)	$	18.2		$	19.6		$	(1.4	)	$	24.5		$	24.0		$	0.5



⁽ⁱ⁾	Service cost is reported in cost of revenue - services and selling, general and administrative expenses. All other components of net periodic pension expense are reported in other income (expense), net in the Consolidated Statements of Income.

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Remaining performance obligation	$ 1,500.0
Remaining performance obligation, percent to be recognized as revenue within one year	50.00%
Long-term contract assets	$ 6.0
Revenue recognized, previously included in deferred revenue		$ 104.6
Deferred sales commission	10.1	11.0
Amortization expense related to deferred commissions	1.7
Cost to fulfill contract, net	77.1	$ 76.0
Amortization of costs to fulfill contracts	$ 3.6

Cost-Reduction Actions - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 25,400,000
Severance costs		12,500,000
Other expenses related to the cost reduction effort		12,900,000
Cost of Revenue \| Services
Restructuring Cost and Reserve [Line Items]
Restructuring charges		8,500,000
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges		11,300,000
Research and development expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges		300,000
Other income (expense), net
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5,300,000
Idle leased facilities
Restructuring Cost and Reserve [Line Items]
Other expenses related to the cost reduction effort		2,900,000
Income for changes in estimates	100,000
Contract amendment and termination
Restructuring Cost and Reserve [Line Items]
Other expenses related to the cost reduction effort		3,300,000
Professional fees and other
Restructuring Cost and Reserve [Line Items]
Other expenses related to the cost reduction effort		1,400,000
Net foreign currency translation adjustment
Restructuring Cost and Reserve [Line Items]
Other expenses related to the cost reduction effort		5,300,000
Net foreign currency translation adjustment \| Other income (expense), net
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5,300,000
Employee severance and idle leased facilities
Restructuring Cost and Reserve [Line Items]
Income for changes in estimates	$ (2,900,000)
United States
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 500,000
Number of employees \| employee		45
United States \| Changes in estimates
Restructuring Cost and Reserve [Line Items]
Severance costs		$ (100,000)
Non-US
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 4,200,000
Number of employees \| employee		75
Non-US \| Changes in estimates
Restructuring Cost and Reserve [Line Items]
Severance costs		$ (300,000)
Non-US \| Additional benefits provided in 2017
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 8,200,000

Stock Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unissued common stock available for grant under the plans (in shares)	2,100,000
Share-based compensation expense	$ 4.0	$ 3.7
Grants of stock option awards in period (in shares)	0	0
Performance-Based Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares)	0
Performance-Based Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares)	2.0
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 3.9	$ 3.4
Aggregate weighted-average grant-date fair value of units granted	17.3	13.4
Total unrecognized compensation cost	$ 23.0
Unrecognized compensation cost, Weighted-average recognition period	2 years 6 months
Aggregate weighted-average grant-date fair value of units vested	$ 9.1	6.3
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.1	$ 0.3

Stock Compensation - Summary of Stock Option Activity (Detail) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares
Stock Options
Outstanding at beginning of period (in shares) \| shares	1,758
Granted (in shares) \| shares	0
Exercised (in shares) \| shares	0
Forfeited and expired (in shares) \| shares	(533)
Outstanding at end of period (in shares) \| shares	1,225
Expected to vest at end of period (in shares) \| shares	20
Exercisable at end of period (in shares) \| shares	1,204
Weighted- Average Exercise Price
Outstanding at beginning of period (in dollars per share) \| $ / shares	$ 26.35
Granted (in dollars per share) \| $ / shares	0.00
Exercised (in dollars per share) \| $ / shares	0.00
Forfeited and expired (in dollars per share) \| $ / shares	23.93
Outstanding at end of period (in dollars per share) \| $ / shares	27.41
Expected to vest at end of period (in dollars per share) \| $ / shares	16.83
Exercisable at end of period (in dollars per share) \| $ / shares	$ 27.59
Weighted- Average Remaining Contractual Term (years)
Outstanding at end of period	1 year 11 months 9 days
Expected to vest at end of period	4 years 4 months 17 days
Exercisable at end of period	1 year 10 months 21 days
Aggregate Intrinsic Value
Outstanding at end of period \| $	$ 0.0
Expected to vest at end of period \| $	0.0
Exercisable at end of period \| $	$ 0.0

Stock Compensation - Summary of Restricted Stock Unit Activity (Detail) shares in Thousands	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Weighted- Average Grant-Date Fair Value
Granted (in dollars per share)	$ 15.84
Restricted Stock Units
Restricted Stock Units
Outstanding at beginning of period (in shares) \| shares	1,688
Granted (in shares) \| shares	1,373
Vested (in shares) \| shares	(696)
Forfeited and expired (in shares) \| shares	(28)
Outstanding at end of period (in shares) \| shares	2,337
Weighted- Average Grant-Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 13.39
Granted (in dollars per share)	12.77
Vested (in dollars per share)	13.09
Forfeited and expired (in dollars per share)	12.80
Outstanding at end of period (in dollars per share)	$ 13.15

Cost-Reduction Actions - Individual Components of Work Force Reduction and Idle Lease Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2018
Total
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 117.8
Payments	(16.5)
Changes in estimates	(2.9)
Translation adjustments	2.9
Balance at end of period	101.3
2018 remaining nine months	69.4
Beyond 2018	69.4
Total \| Forecast
Restructuring Reserve [Roll Forward]
2018 remaining nine months		$ 31.9
Beyond 2018		31.9
Work-Force Reductions \| U.S.
Restructuring Reserve [Roll Forward]
Balance at beginning of period	3.9
Payments	(1.7)
Changes in estimates	(1.2)
Translation adjustments	0.0
Balance at end of period	1.0
2018 remaining nine months	1.0
Beyond 2018	1.0
Work-Force Reductions \| U.S. \| Forecast
Restructuring Reserve [Roll Forward]
2018 remaining nine months		0.0
Beyond 2018		0.0
Work-Force Reductions \| International
Restructuring Reserve [Roll Forward]
Balance at beginning of period	109.6
Payments	(14.2)
Changes in estimates	(1.8)
Translation adjustments	2.8
Balance at end of period	96.4
2018 remaining nine months	67.1
Beyond 2018	67.1
Work-Force Reductions \| International \| Forecast
Restructuring Reserve [Roll Forward]
2018 remaining nine months		29.3
Beyond 2018		29.3
Idle Leased Facilities Costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period	4.3
Payments	(0.6)
Changes in estimates	0.1
Translation adjustments	0.1
Balance at end of period	3.9
2018 remaining nine months	1.3
Beyond 2018	$ 1.3
Idle Leased Facilities Costs \| Forecast
Restructuring Reserve [Roll Forward]
2018 remaining nine months		2.6
Beyond 2018		$ 2.6

Stock Compensation Stock Compensation - Weighted Average Assumptions (Details)	3 Months Ended
	Mar. 31, 2018 $ / shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted-average fair value of grant (in usd per share)	$ 15.84
Risk-free interest rate	2.26%
Expected volatility	52.97%
Expected life of RSU in years	2 years 10 months 17 days
Expected dividend yield	0.00%

Earnings Per Share - Computation of Earnings (Loss) Per Common Share Attributable to Unisys Corporation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic earnings (loss) per common share computation:
Net income (loss) attributable to Unisys Corporation	$ 40.6	$ (32.7)
Weighted average shares (in shares)	50,748	50,256
Basic loss per common share (in dollars per share)	$ 0.80	$ (0.65)
Diluted earnings (loss) per common share computation:
Net income (loss) attributable to Unisys Corporation	$ 40.6	$ (32.7)
Add interest expense on convertible senior notes, net of tax of zero	4.8	0.0
Net income (loss) attributable to Unisys Corporation for diluted earnings per share	$ 45.4	$ (32.7)
Weighted average shares (in shares)	50,748	50,256
Plus incremental shares from assumed conversions:
Employee stock plans (in shares)	327	0
Convertible senior notes (in shares)	21,868	0
Adjusted weighted average shares (in shares)	72,943	50,256
Diluted loss per common share (in dollars per share)	$ 0.62	$ (0.65)
Stock options and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive weighted average securities (in shares)	2,044	2,355
Common shares issuable upon conversion of the 5.50% convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive weighted average securities (in shares)	0	21,868
Convertible senior notes interest rate	5.50%

Financial Instruments and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value Measurements [Line Items]
Maturity period limit of foreign currency exchange instruments (in months)	3 months
Foreign Exchange Forward Contract
Fair Value Measurements [Line Items]
Notional amount of foreign exchange forward contracts not designated as hedging instruments	$ 557.0	$ 514.0

Financial Instruments and Fair Value Measurements - Fair Value of Foreign Exchange Forward Contracts by Balance Sheet Location (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value	$ 0.0	$ 3.3
Foreign Exchange Forward Contract \| Prepaid expenses and other current assets \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	1.1	4.9
Foreign Exchange Forward Contract \| Other accrued liabilities \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability	$ 1.1	$ 1.6

Financial Instruments and Fair Value Measurements - Fair Values of Other Financial Instruments Not Measured at Fair Value in Consolidated Balance Sheets (Details) - Senior Notes - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
10.75% senior secured notes due 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying amount of long-term debt	$ 430.2	$ 429.6
Interest rate	10.75%
5.50% convertible senior notes due 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying amount of long-term debt	$ 188.2	186.3
Interest rate	5.50%		5.50%
Fair Value \| 10.75% senior secured notes due 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	$ 495.0	492.8
Fair Value \| 5.50% convertible senior notes due 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	$ 279.9	$ 237.9

Goodwill (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 181.0	$ 180.8
Services
Goodwill [Line Items]
Goodwill	72.3	$ 72.1
Business process outsourcing services \| Services
Goodwill [Line Items]
Goodwill	$ 10.8

Goodwill - Schedule of Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 180.8
Translation adjustments	0.2
Ending balance	181.0
Services
Goodwill [Roll Forward]
Beginning balance	72.1
Translation adjustments	0.2
Ending balance	72.3
Technology
Goodwill [Roll Forward]
Beginning balance	108.7
Translation adjustments	0.0
Ending balance	$ 108.7

Debt - Schedule of Components of Long-term Debt (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Other debt	$ 20,700,000	$ 21,300,000
Total	646,800,000	644,700,000
Less – current maturities	10,600,000	10,800,000
Total long-term debt	636,200,000	633,900,000
5.50% convertible senior notes due March 1, 2021
Debt Instrument [Line Items]
Face value			$ 1,000
Senior Notes \| 10.75% senior notes due April 15, 2022
Debt Instrument [Line Items]
Face value	440,000,000	440,000,000
Unamortized discount and fees	9,800,000	10,400,000
Senior notes	430,200,000	429,600,000
Senior Notes \| 5.50% convertible senior notes due March 1, 2021
Debt Instrument [Line Items]
Face value	213,500,000	213,500,000	$ 213,500,000.0
Unamortized discount and fees	25,300,000	27,200,000
Senior notes	188,200,000	186,300,000
Capital Lease Obligations
Debt Instrument [Line Items]
Capital leases	$ 7,700,000	$ 7,500,000

Debt - Schedule of Interest Expense (Details) - Senior Notes - 5.50% convertible senior notes due 2021 - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Interest rate	5.50%		5.50%
Contractual interest coupon	$ 2.9	$ 2.9
Amortization of debt discount	1.6	1.5
Amortization of debt issuance costs	0.3	0.3
Total	$ 4.8	$ 4.7

Debt - Additional Information (Detail)	3 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Mar. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) shares $ / shares
Senior Secured Notes Due 2022 \| Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount		$ 440,000,000
Interest rate		10.75%
Redemption price, percent of principal amount of notes redeemed		100.00%
Percent of notes with option to redeem		35.00%
Redemption price, percentage of principal amount		110.75%
Redemption price if required collateral coverage ratio not met, percentage of principal amount		100.00%
Minimum collateral coverage ratio		1.5
Collateral coverage ratio, amount added to cash and cash equivalents		4.75
Collateral coverage ratio, multiplier for Average Grantor EBITDA for seven most recent fiscal quarters		4
Period to redeem notes without default if required collateral coverage ratio not met		90 days
Redemption price if company experiences change of control, percent of principal amount		101.00%
5.50% convertible senior notes due 2021
Debt Instrument [Line Items]
Aggregate principal amount			$ 1,000
5.50% convertible senior notes due 2021 \| Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 213,500,000	$ 213,500,000	$ 213,500,000.0
Interest rate	5.50%		5.50%
Effective interest rate			9.50%
Debt conversion rate (in shares) \| shares			102.4249
Total number of convertible shares (in shares) \| shares			21,867,716
Conversion price (in usd per share) \| $ / shares	$ 12.75		$ 9.76
Payments for capped call transactions			$ 27,300,000
Conversion premium percentage	60.00%		22.50%
Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings outstanding	$ 0
Maximum borrowing capacity	125,000,000
Accordion feature increase limit	150,000,000
Available borrowings	$ 113,100,000
Springing maturity date, period prior to maturity date of convertible debt	91 days
Springing maturity date, period prior to maturity date of secured debt	60 days
Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding	$ 4,700,000
Maximum borrowing capacity	$ 30,000,000
Credit Agreement \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Requirement to maintain minimum fixed charge coverage ratio, availability threshold, percent of lenders' commitments under facility	10.00%
Requirement to maintain minimum fixed charge coverage ratio, availability threshold	$ 15,000,000
Amount of aggregate default under other debt that would trigger event of default	$ 50,000,000

Commitments and Contingencies - Additional Information (Detail) € in Millions, $ in Millions	1 Months Ended	115 Months Ended
	Apr. 30, 2007 EUR (€)	Jul. 31, 2011 USD ($)	Mar. 31, 2018 USD ($)	Apr. 30, 2008 EUR (€)
Loss Contingencies [Line Items]
Amount related to unreserved tax-related matters, inclusive of interest \| $			$ 137.5
Ministry of Justice of Belgium
Loss Contingencies [Line Items]
Loss contingency, damages sought value \| €	€ 28.0
Counterclaim against termination of contract \| €				€ 18.5
Pharmaceutical Claims
Loss Contingencies [Line Items]
Loss contingency, damages sought value \| $		$ 68.0

Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (1,326.5)
Other comprehensive income before reclassifications	(6.0)
Amounts reclassified from accumulated other comprehensive income	38.7	$ 34.9
Current period other comprehensive income	32.7
Ending balance	(1,270.8)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,815.8)
Ending balance	(3,783.1)
Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(817.0)
Other comprehensive income before reclassifications	(5.8)
Amounts reclassified from accumulated other comprehensive income	0.0
Current period other comprehensive income	(5.8)
Ending balance	(822.8)
Postretirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,998.8)
Other comprehensive income before reclassifications	(0.2)
Amounts reclassified from accumulated other comprehensive income	38.7
Current period other comprehensive income	38.5
Ending balance	$ (2,960.3)

Accumulated Other Comprehensive Income - Noncontrolling Interests (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance	$ 28.2
Net income	1.1	$ 3.0
Translation adjustments	0.8
Postretirement plans	0.4
Ending balance	$ 30.5

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash paid during the period for:
Income taxes, net of refunds	$ 13.6	$ 16.0
Interest	$ 6.3	$ 9.0

Segment Information - Customer Revenue by Classes of Similar Products or Services (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from External Customer [Line Items]
Revenues	$ 708.4	$ 664.5
Services
Revenue from External Customer [Line Items]
Revenues	568.5	585.3
Technology
Revenue from External Customer [Line Items]
Revenues	139.9	79.2
Cloud & infrastructure services \| Services
Revenue from External Customer [Line Items]
Revenues	318.4	337.4
Application services \| Services
Revenue from External Customer [Line Items]
Revenues	192.9	199.4
Business process outsourcing services \| Services
Revenue from External Customer [Line Items]
Revenues	$ 57.2	$ 48.5

Segment Information - Revenue, Properties and Outsourcing Assets by Geographic Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 708.4	$ 664.5
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	286.5	333.8
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	114.8	78.9
Other foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 307.1	$ 251.8