v2.4.0.8
Risk Management Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]        
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax $ (16) $ (13) $ (3) $ 7
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax (23) 34 2 51
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax (23) (177) (23) (176)
Accumulated other comprehensive loss (62) (156) (24) (118)
Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Portion Attributable To Parent (19) (16)    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax 6 (4)    
Comprehensive Income (Loss), Net of Tax, Attributable to Parent (13) (20)    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax (25) (17)    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax 0 0    
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Pension And Other Postretiremen tBenefit Plans Net Of Tax Portion Attributable To Parent 0 0    
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax 0 (1)    
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax 0 (1)    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax (38) (38)    
OCI before Reclassifications [Member]
        
Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]        
Other comprehensive income (loss) before reclassifications, net of tax, portion attributable to parent (44) (34)    
Amounts reclassified from AOCI [Member]
        
Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]        
Other comprehensive income reclassified from accumulated other comprehensive income, net of tax, portion attributable to parent $ 6 $ (4)