v2.4.0.8
Derivative and Hedging Activities - Cash Flow Hedges Components of AOCI Table (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Derivative [Line Items]                
Accumulated Other Comprehensive Income (Loss) Period Start           $ (162)    
Accumulated Other Comprehensive Income (Loss) Period End (154)   (154)     (162)    
Accumulated Other Comprehensive Income (Loss) [Member]
               
Derivative [Line Items]                
Accumulated Other Comprehensive Income (Loss) Period Start           (162)   (182)
Accumulated Other Comprehensive Income (Loss) Period End (154) (170) (154) (170)   (162)   (182)
Cash Flow Hedging [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
               
Derivative [Line Items]                
Accumulated Other Comprehensive Income (Loss), Before Tax Period Start (243) (286) (243) (286) (247) (269) (287) (304)
Accumulated Other Comprehensive Income (Loss) Period Start (153) (178) (167) (189)        
Other Comprehensive Income (Loss), before Reclassifications, before Tax 1 2 6 0        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 0 1 3 0        
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion 3 (1) 20 18        
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net (1) (1) 10 11        
Accumulated Other Comprehensive Income (Loss), Before Tax Period End (243) (286) (243) (286) (247) (269) (287) (304)
Accumulated Other Comprehensive Income (Loss) Period End $ (154) $ (178) $ (154) $ (178)