Investments (Details 9) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Fair value
Fixed income securities:	$ 59,391	$ 57,839
Equity securities	6,434	5,666
Short-term investments	2,198	4,288
Derivative instruments	1	5
Gross unrealized Gains
Fixed income securities	1,974	1,710
Equity securities	1,006	594
Short-term investments	0	0
Derivative instruments	2	5
Gross unrealized Losses
Fixed income securities	(191)	(447)
Equity securities	(40)	(85)
Short-term investments	0	0
Derivative instruments	(4)	(3)
Fair value of derivative securities classified as assets, with unrealized net gains (losses) in AOCI	1	5
Unrealized net gains (losses)
Fixed income securities	1,783	1,263
Equity securities	966	509
Short-term investments	0	0
Derivative instruments	(2)	2
EMA limited partnerships	0	(4)
Unrealized net capital gains and losses, pre-tax	2,747	1,770
Amount recognized for:
Insurance reserves	0	0
DAC and DSI	(203)	(146)
Amounts recognized	(203)	(146)
Deferred income taxes	(893)	(571)
Total unrealized net capital gains and losses	$ 1,651	$ 1,053