XML 103 R64.htm IDEA: XBRL DOCUMENT v3.4.0.3
Accumulated Other Comprehensive Income (Loss) (After-tax Changes by Component) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period $ (26) $ (23)
Amounts arising during the period 3 5
Reclassifications from accumulated other comprehensive income 1 (1)
Total other comprehensive income (loss) 4 4
Balance at end of period (22) (19)
Available- for-sale securities    
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period 194 202
Amounts arising during the period 3 5
Reclassifications from accumulated other comprehensive income 1 (1)
Total other comprehensive income (loss) 4 4
Balance at end of period 198 206
Qualifying derivatives    
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period 44 63
Amounts arising during the period 0 0
Reclassifications from accumulated other comprehensive income (3) (4)
Total other comprehensive income (loss) (3) (4)
Balance at end of period 41 59
Prior service costs    
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period 3 7
Amounts arising during the period 0 0
Reclassifications from accumulated other comprehensive income 0 0
Total other comprehensive income (loss) 0 0
Balance at end of period 3 7
Actuarial gain (loss)    
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period (267) (295)
Amounts arising during the period 0 0
Reclassifications from accumulated other comprehensive income 3 4
Total other comprehensive income (loss) 3 4
Balance at end of period $ (264) $ (291)