Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Cash flows from operating activities:
Net earnings	$ 29	$ 1,879
Adjustments to reconcile net earnings to net cash provided (used) by operating activities:
Change in receivables and advance premiums	(37)	32
Capitalization of deferred policy acquisition costs	(246)	(254)
Amortization of deferred policy acquisition costs	216	215	$ 851
Increase in policy liabilities	(136)	(41)
Change in income tax liabilities	117	291
Net investment (gains) losses	963	(951)
Other, net	(317)	(322)
Net cash provided (used) by operating activities	589	849
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities	5,935	2,286
Equity securities	96	267
Commercial mortgage and other loans	500	379
Costs of investments acquired:
Available-for-sale fixed maturity securities	(6,624)	(2,127)
Equity securities	(101)	(73)
Commercial mortgage and other loans	(392)	(251)
Other investments, net	(697)	(2,119)
Settlement of derivatives, net	18	(256)
Cash received (pledged or returned) as collateral, net	984	1,973
Other, net	(78)	148
Net cash provided (used) by investing activities	(359)	227
Cash flows from financing activities:
Purchases of treasury stock	(900)	(750)
Proceeds from borrowings	0	823
Dividends paid to shareholders	(306)	(278)
Change in investment-type contracts, net	(58)	(50)
Treasury stock reissued	4	6
Other, net	(1)	(7)
Net cash provided (used) by financing activities	(1,261)	(256)
Effect of exchange rate changes on cash and cash equivalents	33	(28)
Net change in cash and cash equivalents	(998)	792
Cash and cash equivalents, beginning of period	6,229	4,306	4,306
Cash and cash equivalents, end of period	5,231	5,098	$ 6,229
Supplemental disclosures of cash flow information:
Income taxes paid	(1)	0
Interest paid	40	34
Noncash interest	10	13
Noncash real estate acquired in satisfaction of debt	71	35
Noncash financing activities:
Lease obligations	10	5
Associate stock bonus
Treasury stock issued for:
Treasury stock issued	5	4
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued	11	10
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued	$ 7	$ 6