Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Insurance premiums	$ 801	$ 728	$ 1,608	$ 1,544
Fee income	1,393	1,288	2,747	2,523
Net investment income	1,262	1,199	2,499	2,371
Realized gain (loss):
Total other-than-temporary impairment losses on securities	(4)	(36)	(8)	(92)
Portion of loss recognized in other comprehensive income		8		28
Net other-than-temporary impairment losses on securities recognized in earnings	(4)	(28)	(8)	(64)
Realized gain (loss), excluding other-than-temporary impairment losses on securities	(6)	(17)	(41)	(95)
Total realized gain (loss)	(10)	(45)	(49)	(159)
Amortization of deferred gain on business sold through reinsurance	4	18	22	37
Other revenues	127	119	250	235
Total revenues	3,577	3,307	7,077	6,551
Expenses
Interest credited	646	639	1,293	1,272
Benefits	1,287	1,208	2,578	2,540
Commissions and other expenses	1,034	978	2,048	1,953
Interest and debt expense	63	68	127	136
Strategic digitization expense	14		23
Total expenses	3,044	2,893	6,069	5,901
Income (loss) before taxes	533	414	1,008	650
Federal income tax expense (benefit)	122	89	162	114
Net income (loss)	411	325	846	536
Other comprehensive income (loss), net of tax	864	1,264	1,145	2,350
Comprehensive income (loss)	$ 1,275	$ 1,589	$ 1,991	$ 2,886
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 1.84	$ 1.37	$ 3.77	$ 2.24
Diluted (in dollars per share)	1.81	1.35	3.70	2.18
Cash dividends declared per common share	$ 0.29	$ 0.25	$ 0.58	$ 0.50