Pension Earnings Cover [Abstract] Document Type Amendment Flag Entity Registrant Name Entity Central Index Key Fair value of all equity awards granted during that year that are unvested. Fair Value at 12/31 of Equity Awards Granted During the Year and Unvested at 12/31 [Member] Fair values of equity awards granted and vested in applicable year. Fair Value at Vesting of Equity Awards Granted and Vested in the Year [Member] Changes in fair value from prior year to applicable year of awards that are outstanding. Change in Fair Value During the Year of Outstanding Equity Awards Both on 1/1 and 12/31 [Member] Changes in fair value from prior year of equity awards as to which all vesting conditions were satisfied. Change in Fair Value During the Year of Outstanding Equity Awards on 1/1 that Vested During the Year [Member] Forfeitures of equity awards in prior year as to which vesting conditions failed to be met during applicable year. Forfeitures of Equity Awards that had Value on 1/1 that Failed to Vest During the Year [Member]