Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Insurance premiums	$ 4,601	$ 3,256	$ 2,987
Fee income	5,986	5,619	5,244
Net investment income	5,085	4,990	4,874
Realized gain (loss):
Total other-than-temporary impairment losses on securities	(7)	(18)	(145)
Portion of loss recognized in other comprehensive income			43
Net other-than-temporary impairment losses on securities recognized in earnings	(7)	(18)	(102)
Realized gain (loss), excluding other-than-temporary impairment losses on securities	148	(152)	(237)
Total realized gain (loss)	141	(170)	(339)
Amortization of deferred gain on business sold through reinsurance	9	23	73
Other revenues	602	539	491
Total revenues	16,424	14,257	13,330
Expenses
Interest credited	2,617	2,590	2,564
Benefits	6,786	5,160	4,692
Commissions and other expenses	4,763	4,176	4,277
Interest and debt expense	297	253	331
Strategic digitization expense	76	43	8
Impairment of intangibles		905
Total expenses	14,539	13,127	11,872
Income (loss) before taxes	1,885	1,130	1,458
Federal income tax expense (benefit)	244	(949)	266
Net income (loss)	1,641	2,079	1,192
Other comprehensive income (loss), net of tax
Unrealized investment gains (losses)	(3,449)	1,643	709
Foreign currency translation adjustment	(9)	13	(22)
Funded status of employee benefit plans	(7)	8	34
Total other comprehensive income (loss), net of tax	(3,465)	1,664	721
Comprehensive income (loss)	$ (1,824)	$ 3,743	$ 1,913
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 7.60	$ 9.36	$ 5.09
Diluted (in dollars per share)	7.40	9.22	5.03
Cash Dividends Declared Per Common Share	$ 1.36	$ 1.20	$ 1.04