Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Premiums	$ 33,763	$ 30,855	$ 29,044
Net investment income	2,562	3,033	2,227
Fee income	412	402	429
Net realized investment gains (losses)	(204)	171	2
Other revenues	351	355	279
Total revenues	36,884	34,816	31,981
Claims and expenses
Claims and claim adjustment expenses	22,854	20,298	19,123
Amortization of deferred acquisition costs	5,515	5,043	4,773
General and administrative expenses	4,810	4,677	4,509
Interest expense	351	340	339
Total claims and expenses	33,530	30,358	28,744
Income before income taxes	3,354	4,458	3,237
Income tax expense	512	796	540
Net income	$ 2,842	$ 3,662	$ 2,697
Net income per share
Basic (in dollars per share)	$ 11.91	$ 14.63	$ 10.56
Diluted (in dollars per share)	$ 11.77	$ 14.49	$ 10.52
Weighted average number of common shares outstanding
Basic (in shares)	237.0	248.5	253.5
Diluted (in shares)	239.7	250.8	254.6