CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 1,534	$ 1,893	$ 2,098
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion, net	207	183	198
Deferred income tax expense (benefit)	(321)	(308)	25
Share-based compensation	146	135	144
Gain (Loss) on Disposition of Business before Affinity Payment		(313)
Net realized investment (gains) losses	(22)	(16)	(9)
Net trading (gains) losses	(10)	(10)	(12)
Loss from equity method investments	66	95	63
Impairments and provision for loan and credit losses	24	22
Net (gains) losses of consolidated investment entities	7	9	(47)
Changes in operating assets and liabilities:
Restricted and segregated investments	(500)	124	499
Deferred acquisition costs	49	(112)	4
Policyholder account balances, future policy benefits and claims, net	3,054	358	528
Derivatives, net of collateral	(141)	415	(144)
Receivables	(648)	324	(398)
Brokerage deposits	346	(519)	(255)
Accounts payable and accrued expenses	129	46	(100)
Increase (Decrease) in Income Taxes	25	32	(57)
Deferred taxes, Net	334	(18)	(196)
Other operating assets and liabilities of consolidated investment entities, net	(15)	(12)	29
Other, net	359	13	227
Net Cash Provided by (Used in) Operating Activities	4,623	2,341	2,597
Available-for-Sale securities:
Proceeds from sales	1,708	242	435
Maturities, sinking fund payments and calls	9,554	8,202	6,738
Purchases	(13,525)	(11,911)	(8,346)
Proceeds from sales, maturities and repayments of mortgage loans	217	272	295
Funding of mortgage loans	(165)	(354)	(235)
Proceeds from sales, maturities and collections of other investments	198	276	722
Purchase of other investments	(284)	(288)	(653)
Purchase of investments by consolidated investment entities	(957)	(644)	(411)
Proceeds from sales, maturities and repayments of investments by consolidated investment entities	606	684	1,086
Purchase of land, buildings, equipment and software	(147)	(143)	(162)
Proceeds from Divestiture of Businesses, Net of Cash Divested	0	934	0
Cash paid for written options with deferred premiums	(338)	(308)	(133)
Cash received from written options with deferred premiums	133	170	133
Cash paid for deposit receivable	(4)	(349)
Cash received for deposit receivable	93	98
Other, net	17	(115)	(56)
Net cash (used in) provided by investing activities	(2,894)	(3,234)	(587)
Investment certificates:
Proceeds from additions	4,259	5,110	6,238
Maturities, withdrawals and cash surrenders	(5,016)	(5,489)	(4,745)
Policyholder account balances:
Deposits and other additions	1,649	2,152	1,933
Net transfers to (from) separate accounts	(125)	(86)	(75)
Surrenders and other benefits	(1,357)	(1,728)	(1,904)
Change in banking deposits, net	3,616	3,788
Cash paid for purchased options with deferred premiums	(211)	(396)	(228)
Cash received for purchased options with deferred premiums	40	206	254
Issuance of long-term debt, net of issuance costs	496	497
Repayments of long-term debt	(762)	(313)	(13)
Dividends paid to shareholders	(497)	(504)	(506)
Repurchase of common shares	(1,441)	(1,943)	(1,630)
Exercise of stock options	3	3	2
Borrowings of Consolidated Investment Entities	382		936
Repayments of debt by consolidated investment entities	(74)	(84)	(1,528)
Other, net	(10)	1	3
Net cash provided by (used in) financing activities	952	1,214	(1,263)
Effect of exchange rate changes on cash	9	9	(8)
Net increase (decrease) in cash and cash equivalents, including amounts restricted	2,690	330	739
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, beginning balance	6,213	5,883	5,144
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, ending balance	$ 8,903	$ 6,213	$ 5,883