CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Cash Flows [Abstract]
Net income	$ 437	$ 2,036
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion, net	60	47
Deferred income tax expense (benefit)	60	1,273
Share-based compensation	35	36
Net realized investment (gains) losses	(65)	(5)
Net trading (gains) losses	1	(3)
Loss from equity method investments	12	19
Impairments and provision for loan losses		21
Net (gains) losses of consolidated investment entities	(19)	6
Changes in operating assets and liabilities:
Restricted and segregated investments	(315)
Deferred acquisition costs	(60)	452
Policyholder account balances, future policy benefits and claims, net	(1,050)	2,634
Derivatives, net of collateral	144	(681)
Receivables	(238)	(13)
Brokerage deposits	(102)	378
Accounts payable and accrued expenses	(163)	(432)
Current income tax expense (benefit)	90	(1,081)
Increase (Decrease) in Deferred Income Taxes	(115)
Other operating assets and liabilities of consolidated investment entities, net	4	(1)
Other, net	284	207
Net cash provided by (used in) operating activities	(1,000)	4,893
Available-for-Sale securities:
Proceeds from sales	92	633
Maturities, sinking fund payments and calls	2,964	2,050
Purchases	(3,245)	(2,529)
Proceeds from sales, maturities and repayments of mortgage loans	55	54
Funding of mortgage loans	(22)	(62)
Proceeds from sales, maturities and collections of other investments	54	77
Purchase of other investments	(31)	(115)
Purchase of investments by consolidated investment entities	(737)	(133)
Proceeds from sales, maturities and repayments of investments by consolidated investment entities	240	141
Purchase of land, buildings, equipment and software	(22)	(29)
Cash paid for written options with deferred premiums	(211)	(258)
Cash received from written options with deferred premiums	21	95
Cash paid for deposit receivable	(2)	(1)
Cash received for deposit receivable	21	30
Other, net	14	7
Net cash provided by (used in) investing activities	(809)	(40)
Investment certificates:
Proceeds from additions	723	1,271
Maturities, withdrawals and cash surrenders	(1,224)	(1,449)
Policyholder account balances:
Deposits and other additions	384	255
Net transfers from (to) separate accounts	(60)	30
Surrenders and other benefits	(368)	(430)
Change in banking deposits, net	580	2,372
Cash paid for purchased options with deferred premiums	(42)	(36)
Cash received from purchased options with deferred premiums	306
Issuance of long-term debt	4
Repayments of long-term debt	(2)	(753)
Dividends paid to shareholders	(129)	(122)
Repurchase of common shares	(470)	(480)
Exercise of stock options	0	1
Borrowings of Consolidated Investment Entities	797
Repayments of debt by consolidated investment entities	(63)	(29)
Other, net	(3)	(2)
Net cash provided by (used in) financing activities	433	628
Effect of exchange rate changes on cash	9	(17)
Net increase (decrease) in cash and cash equivalents, including amounts restricted	(1,367)	5,464
Cash and cash equivalents, including amounts restricted, at beginning of period	8,903	6,213
Cash and cash equivalents, including amounts restricted, at end of period	$ 7,536	$ 11,677