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Consolidated Statement of Income Parentheticals (Unaudited) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Consolidated Statement of Income (Unaudited)    
Total other-than-temporary impairment gains (losses) $ (7) $ 0
Other-than-temporary impairment, credit losses recognized in net realized investment gains (9) (5)
Unrealized gains from other changes in total other-than-temporary impairments recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income $ 2 $ 5