Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 368	$ 426	$ 1,261	$ 1,030
Other comprehensive (loss) income:
Change in gross unrealized investment gains/losses	(16)	116	(286)	168
Effect of income taxes	6	(42)	105	(61)
Total change in unrealized investment gains/losses, net of tax	(10)	74	(181)	107
Reclassification adjustment for net realized gains included in investment income	(4)	(6)	(14)	(20)
Effect of income taxes	1	2	5	7
Total reclassification adjustment, net of tax	(3)	(4)	(9)	(13)
Other comprehensive (loss) income, net of tax	(13)	70	(190)	94
Comprehensive income	$ 355	$ 496	$ 1,071	$ 1,124