XML 65 R54.htm IDEA: XBRL DOCUMENT v3.5.0.2
Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
OTTI Gains (Losses) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications $ (4) $ (1) $ (5) $ 1
Tax on reclassification from accumulated other comprehensive income 2 0 1 0
Unrealized Gains (Losses) on Investments [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications (32) 38 (304) 162
Tax on reclassification from accumulated other comprehensive income 13 (17) 12 (22)
Cash Flow Hedges [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications 0   0  
Tax on reclassification from accumulated other comprehensive income 0 0 0  
Pension Liability [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications 0 0 0 1
Tax on reclassification from accumulated other comprehensive income (4) (2) (11) (2)
Foreign Currency Translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications 0 (1) 0 (19)
Tax on reclassification from accumulated other comprehensive income 0   0 (9)
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax on change in other comprehensive income (loss) before reclassifications 0 0 0 0
Tax on reclassification from accumulated other comprehensive income $ 0 $ 0 $ 0 $ 0