Defined Benefit Plans [Domain]
Other Postretirement Benefit Plans, Defined Benefit [Member]
United States Postretirement Benefit Plans, Defined Benefit, Pre-65 [Member]United States Postretirement Benefit Plans, Defined Benefit, Post-65 [Member]
2007200620072006
Defined Benefit Plan Disclosure [Line Items]Defined Benefit Plan, Assumptions Used in Calculations [Abstract]Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year8.5%9%9.75%10.25%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate5%5%5%5%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate2015201520152015