Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net earnings	$ 1,596	$ 1,032	$ 888	$ 1,293	$ 4,016	$ 3,286
Adjustments to reconcile net earnings to net cash provided (used) by operating activities:
Change in receivables and advance premiums					(17)	22
Capitalization of deferred policy acquisition costs					(770)	(778)
Amortization of deferred policy acquisition costs	268		278		858	869
Increase in policy liabilities					752	770
Change in income tax liabilities					(536)	325
Net investment (gains) losses	(199)		171		(885)	(224)
Other, net					(572)	(89)
Net cash provided (used) by operating activities					2,846	4,181
Proceeds from investments sold or matured:
Available-for-sale fixed maturity securities					2,997	2,719
Equity securities					518	210
Held-to-maturity fixed maturity securities					2	2
Commercial mortgage and other loans					1,849	2,625
Costs of investments acquired:
Available-for-sale fixed maturity securities					(2,961)	(4,187)
Equity securities					(414)	(458)
Commercial mortgage and other loans					(3,552)	(3,434)
Other investments, net					(54)	(929)
Settlement of derivatives, net					(159)	171
Cash received (pledged or returned) as collateral, net					769	2,123
Other, net					158	(13)
Net cash provided (used) by investing activities					(847)	(1,171)
Cash flows from financing activities:
Purchases of treasury stock					(1,801)	(1,676)
Proceeds from borrowings					1,277	1,153
Principal payments under debt obligations					(966)	(700)
Dividends paid to shareholders					(740)	(647)
Change in investment-type contracts, net					(61)	(25)
Treasury stock reissued					15	13
Other, net					20	(15)
Net cash provided (used) by financing activities					(2,256)	(1,897)
Effect of exchange rate changes on cash and cash equivalents					(84)	(46)
Net change in cash and cash equivalents					(341)	1,067
Cash and cash equivalents, beginning of period		$ 5,051		$ 5,141	5,051	5,141	$ 5,141
Cash and cash equivalents, end of period	$ 4,710		$ 6,208		4,710	6,208	$ 5,051
Supplemental disclosures of cash flow information:
Income taxes paid					600	478
Interest paid					153	146
Noncash interest					17	36
Noncash financing activities:
Lease obligations					72	36
Associate stock bonus
Treasury stock issued for:
Treasury stock issued					11	16
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued					28	23
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued					$ 6	$ 4