Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO NEOs [Member] Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non- PEO NEOs [Member] Average Exclusion of Change in Pension Value for Non-PEO NEOs [Member] Average Exclusion of Stock Awards for Non-PEO NEOs [Member] Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for Non-PEO NEOs [Member] Average Inclusion of Equity Values for Non-PEO NEOs [Member] Average Inclusion of Pension Service Cost for Non-PEO NEOs [Member] Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO NEOs [Member] Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for PEO [Member] Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for PEO [Member] Change In Pension Value and Equity Award Value [Member] Adjustments For Equity Awards Failed To Meet Performance Conditions [Member] Change In Fair Value As Of Vesting Date Of Current Year Awards Vested During Current Year [Member] Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member] Change In Fair Value As Of Vesting Date Of Awards Vested During Current Year [Member] Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member] Dividends Or Other Earnings Paid On Equity Awards Not Otherwise Reflected In Fair Value [Member] Total Equity Awards Adjustments [Member] Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member] Equity Awards Value In Summary Compensation Table (Grant Date Value) Exclusion in Pension Value for PEO [Member] Exclusion of Stock Awards for PEO [Member] Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for PEO [Member] Inclusion of Equity Values for PEO [Member] Inclusion of Pension Service Cost for PEO [Member] Total Net Adjustments For Equity Awards [Member] Total Net Adjustments For Pension [Member] Total Pension Adjustments [Member] Pension Adjustments Prior Service Cost [Member] Pension Adjustments Service Cost [Member] Pension Value And Equity Awards Value In Compensation Table For The Applicable Year [Member] Pension Adjustments Pension Value In Summary Compensation Table [Member] Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for PEO [Member]