Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities
Net Income	$ 6,019	$ 6,095	$ 4,572
Adjustments to reconcile net income to net cash provided by operating activities:
Net losses (gains) on financial instruments	550	(318)	(182)
Equity in net earnings of other invested assets	(293)	(562)	(51)
Depreciation and amortization	1,675	1,302	1,154
Deferred income taxes	(76)	326	(540)
Impairment of property and equipment	7	73	198
Share-based compensation	264	255	283
Changes in operating assets and liabilities:
Receivables, net	(2,510)	(2,138)	(256)
Other invested assets	11	(70)	(32)
Other assets	120	37	(283)
Policy liabilities	2,254	2,597	3,528
Unearned income	(42)	(113)	202
Accounts payable and other liabilities	824	719	1,978
Income taxes	(338)	140	72
Other, net	(66)	21	45
Net cash provided by operating activities	8,399	8,364	10,688
Investing activities
Purchases of investments	(24,946)	(18,669)	(19,492)
Proceeds from sale of investments	11,988	10,269	11,318
Maturities, calls and redemptions from investments	10,620	4,344	4,741
Changes in securities lending collateral	(301)	(956)	(849)
Purchases of subsidiaries, net of cash acquired	(649)	(3,476)	(1,976)
Purchases of property and equipment	(1,152)	(1,087)	(1,021)
Other, net	(120)	(63)	(45)
Net cash used in investing activities	(4,560)	(9,638)	(7,324)
Financing activities
Net (repayments of) proceeds from commercial paper borrowings	(300)	50	(150)
Proceeds from long-term borrowings	3,071	3,462	2,484
Repayments of long-term borrowings	(1,899)	(1,068)	(1,932)
Proceeds from short-term borrowings	1,365	1,325	970
Repayments of short-term borrowings	(1,375)	(1,050)	(1,670)
Changes in securities lending payable	302	956	849
Changes in bank overdrafts	933	(376)	486
Repurchase and retirement of common stock	(2,316)	(1,900)	(2,700)
Cash dividends	(1,229)	(1,104)	(954)
Proceeds from issuance of common stock under employee stock plans	182	203	176
Taxes paid through withholding of common stock under employee stock plans	(93)	(102)	(128)
Other, net	41	27	2
Net cash (used in) provided by financing activities	(1,318)	423	(2,567)
Effect of foreign exchange rates on cash and cash equivalents	(14)	(10)	7
Change in cash and cash equivalents	2,507	(861)	804
Cash and cash equivalents at beginning of year	4,880	5,741	4,937
Cash and cash equivalents at end of year	$ 7,387	$ 4,880	$ 5,741