Average Aggregate Change in Actuarial Present Value of Defined Benefit Pension Plans [Member] Average Amount Attributaible to the Service cost [Member] Average Equity Award Adjustments [Member] Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year [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) Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year [Member] Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year [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] Reported Value of Equity Awards [Member] Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value [Member]