75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink Amendment Flag Change in Fair Value of Awards Granted in Prior Years and Unvested at Year-End [Member] Change in Fair Value of Awards Granted in Prior Years and Unvested at Year-End [Member] Document Type Entity Central Index Key Prior Year-End Fair Value of Any Awards Forfeited During Current Year [Member] Prior Year-End Fair Value of Any Awards Forfeited During Current Year [Member] Change in Pension Value [Member] Change in Pension Value [Member] Dividends Paid in FY on Unvested Awards [Member] Dividends Paid in FY on Unvested Awards [Member] Grant Date Fair Value of Current Year Grants [Member] Grant Date Fair Value of Current Year Grants [Member] Cover [Abstract] Vest Date Fair Value of Awards Granted and Vested in Current Year [Member] Vest Date Fair Value of Awards Granted and Vested in Current Year [Member] Year-End Fair Value of Awards Granted in Current Year Unvested at Year End [Member] Year-End Fair Value of Awards Granted in Current Year Unvested at Year End [Member] Entity Registrant Name Pension Value Service Cost [Member] Pension Value Service Cost [Member] Change in Fair Value of Awards Granted in Prior Years and vested in Current Year [Member] Change in Fair Value of Awards Granted in Prior Years and vested in Current Year [Member]