Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Cash flows from operating activities:
Net earnings	$ 1,188	$ 1,047
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities
Change in receivables and advance premiums	(34)	(29)
Capitalization of deferred policy acquisition costs	(270)	(255)
Amortization of deferred policy acquisition costs	205	207	$ 792
Increase in policy liabilities	(361)	143
Change in income tax liabilities	154	325
Net investment (gains) losses	(123)	(122)
Other, net	(51)	(56)
Net cash provided (used) by operating activities	708	1,260
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	949	545
Equity securities	126	102
Commercial mortgage and other loans	418	638
Costs of investments acquired:
Available-for-sale fixed maturity securities	(1,090)	(707)
Equity securities	(134)	(114)
Commercial mortgage and other loans	(315)	(1,161)
Other investments, net	(1,074)	(138)
Settlement of derivatives, net	(480)	(558)
Cash received (pledged or returned) as collateral, net	1,756	142
Other, net	(51)	41
Net cash provided (used) by investing activities	105	(1,210)
Cash flows from financing activities:
Purchases of treasury stock	(700)	(500)
Dividends paid to shareholders	(248)	(250)
Change in investment-type contracts, net	(28)	(21)
Treasury stock reissued	2	9
Other, net	41	25
Net cash provided (used) by financing activities	(933)	(737)
Effect of exchange rate changes on cash and cash equivalents	(14)	(89)
Net change in cash and cash equivalents	(134)	(776)
Cash and cash equivalents, beginning of period	3,943	5,051	5,051
Cash and cash equivalents, end of period	3,809	4,275	$ 3,943
Supplemental disclosures of cash flow information:
Income taxes paid	0	(77)
Interest paid	37	37
Noncash interest	11	19
Noncash financing activities:
Lease obligations	18	73
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	4	3
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	9	9
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 5	$ 5