XML 49 R62.htm IDEA: XBRL DOCUMENT v2.4.0.8
Employee Benefit Plans Amounts Recognized in the Balance Sheet (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Change in postretirement benefit obligation due to remeasurement of the plan   $ 16.4  
Defined benefit plan, effect of one percentage point decrease on accumulated postretirement benefit obligation 28.1    
Defined benefit plan, effect of one percentage point increase on accumulated postretirement benefit obligation 33.6    
GM postretirement cost sharing asset, current 13.9    
GM postretirement cost sharing asset, noncurrent 242.0   259.7
Total GM postretirement cost sharing asset 255.9   273.0
Impact on accumulated other comprehensive income (loss) due to plan remeasurement   13.7  
Pension Plan, Defined Benefit [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Noncurrent assets 9.3   11.8
Defined benefit pension plan liabilities, current (2.3)   (1.3)
Defined benefit pension plan, liabilities, noncurrent (49.0)   (157.9)
Defined benefit plan, amounts recognized in balance sheet (42.0)   (147.4)
Other Postretirement Benefit Plan, Defined Benefit [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Noncurrent assets 0   0
Postemployment benefits liability, current (30.8)   (28.6)
Other postretirement defined benefit plan, liabilities, noncurrent (547.1)   (572.7)
Other postretirement defined benefit plan, liabilities $ (577.9)   $ (601.3)