Investments (Details 10) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss)
Change in unrealized net capital gains and losses	$ (1,719)
Amount recognized for:
Insurance reserves	28
DAC and DSI	81
Amounts recognized	109
Deferred income taxes	563
Decrease in unrealized net capital gains and losses, after-tax	(1,047)
Fixed income securities
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss)
Change in unrealized net capital gains and losses	(1,429)
Equity securities
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss)
Change in unrealized net capital gains and losses	(299)
Derivatives
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss)
Change in unrealized net capital gains and losses	$ 9