Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income (loss)	$ 2,085	$ 1,807	$ (3,131)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Net realized capital losses (gains)	(395)	165	(111)
Amortization of deferred policy acquisition costs	1,622	1,442	1,417
Additions to deferred policy acquisition costs	(1,635)	(1,404)	(1,383)
Depreciation and amortization	451	467	399
Pension settlement expense	0	0	747
Loss on extinguishment of debt	(90)	(6)	0
Loss (gain) on sale of business	0	(202)	3,257
Other operating activities, net	76	408	408
Change in assets and liabilities:
Increase in reinsurance recoverables	(81)	(323)	(935)
Increase (decrease) in accrued and deferred income taxes	886	(103)	170
Impact of tax reform on accrued and deferred income taxes	0	0	877
Increase in insurance liabilities	768	493	1,648
Net change in other assets and other liabilities	(378)	87	(1,177)
Cash provided by operating activities	3,489	2,843	2,186
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale	18,499	24,700	31,646
Fixed maturities, fair value option	36	23	148
Proceeds from Sale and Maturity of Marketable Securities	1,553	1,230	0
Equity securities, available-for-sale	0	0	810
Mortgage loans	771	483	734
Partnerships	238	433	274
Payments for the purchase of:
Fixed maturities, available-for-sale	(19,881)	(23,173)	(30,923)
Payments to Acquire Marketable Securities	(1,316)	(1,500)	0
Equity securities, available-for-sale	0	0	(638)
Mortgage loans	(1,275)	(983)	(1,096)
Partnerships	(303)	(481)	(509)
Net proceeds from (payments for) derivatives	32	(224)	(314)
Net additions to property and equipment	(105)	(122)	(250)
Net proceeds from (payments for) short-term investments	1,491	(3,460)	(144)
Other investing activities, net	13	(3)	21
Proceeds from businesses sold, net of cash transferred	0	1,115	222
Amounts paid for business acquired, net of cash acquired	(1,901)	0	(1,423)
Net cash used for investing activities	(2,148)	(1,962)	(1,442)
Financing Activities
Deposits and other additions to investment and universal life-type contracts	123	1,814	4,602
Withdrawals and other deductions from investment and universal life-type contracts	(124)	(9,210)	(13,562)
Net transfers from separate accounts related to investment and universal life-type contracts	0	6,949	7,969
Repayments at maturity or settlement of consumer notes	0	(2)	(13)
Net increase (decrease) in securities loaned or sold under agreements to repurchase	(323)	(621)	1,320
Repayment of debt	(1,583)	(826)	(416)
Proceeds from the issuance of debt	1,376	490	500
Proceeds from Issuance of Redeemable Preferred Stock	0	334	0
Net return of shares under incentive and stock compensation plans	(6)	(16)	(10)
Treasury stock acquired	(200)		(1,028)
Payments for Repurchase of Preferred Stock and Preference Stock	(21)
Dividends paid on common stock	(433)	(379)	(341)
Net cash used for financing activities	(1,191)	(1,467)	(979)
Foreign exchange rate effect on cash	(9)	(10)	70
Net increase (decrease) in cash, including cash classified as assets held for sale	141	(596)	(165)
Less: Net decrease in cash classified as assets held for sale	0	(537)	(17)
Net increase (decrease) in cash, including cash classified as assets held for sale	141	(59)	(148)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	121	180	328
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	262	121	180
Supplemental Disclosure of Cash Flow Information
Income tax received	396	9	6
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 261	$ 292	$ 322