Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net income (loss)	$ 999	$ 871
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	183	(52)
Trading securities purchases, sales and maturities, net	128	121
Change in premiums and fees receivable	21	90
Change in accrued investment income	(47)	(67)
Change in future contract benefits and other contract holder funds	(807)	690
Change in reinsurance related assets and liabilities	(276)	(255)
Change in accrued expenses	(124)
Change in federal income tax accruals	143	(14)
Realized (gain) loss	121	11
Amortization of deferred gain on business sold through reinsurance	(55)	(55)
Other	391	147
Net cash provided by (used in) operating activities	677	1,487
Cash Flows from Investing Activities
Purchases of available-for-sale securities	(8,278)	(6,122)
Sales of available-for-sale securities	2,411	635
Maturities of available-for-sale securities	4,001	3,137
Purchases of other investments	(14,620)	(11,354)
Sales or maturities of other investments	13,951	10,666
Increase (decrease) in payables for collateral on investments	998	889
Proceeds from sale of subsidiaries/businesses, net of cash disposed		75
Other	(75)	(73)
Net cash provided by (used in) investing activities	(1,612)	(2,147)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities		(250)
Issuance of long-term debt, net of issuance costs		298
Deposits of fixed account values, including the fixed portion of variable	7,432	7,667
Withdrawals of fixed account values, including the fixed portion of variable	(4,138)	(4,534)
Transfers to and from separate accounts, net	(1,200)	(1,859)
Common stock issued for benefit plans and excess tax benefits	(6)	44
Repurchase of common stock	(675)	(700)
Dividends paid to common stockholders	(180)	(153)
Net cash provided by (used in) financing activities	1,233	513
Net increase (decrease) in cash and invested cash	298	(147)
Cash and invested cash as of beginning-of-year	3,146	3,919
Cash and invested cash as of end-of-year	$ 3,444	$ 3,772