Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues
Premiums	$ 37,761	$ 33,763	$ 30,855
Net investment income	2,922	2,562	3,033
Fee income	433	412	402
Net realized investment gains (losses)	(105)	(204)	171
Other revenues	353	351	355
Total revenues	41,364	36,884	34,816
Claims and expenses
Claims and claim adjustment expenses	26,215	22,854	20,298
Amortization of deferred acquisition costs	6,226	5,515	5,043
General and administrative expenses	5,176	4,810	4,677
Interest expense	376	351	340
Total claims and expenses	37,993	33,530	30,358
Income before income taxes	3,371	3,354	4,458
Income tax expense	380	512	796
Net income	$ 2,991	$ 2,842	$ 3,662
Net income per share
Basic (in dollars per share)	$ 12.93	$ 11.91	$ 14.63
Diluted (in dollars per share)	$ 12.79	$ 11.77	$ 14.49
Weighted average number of common shares outstanding
Basic (in shares)	229.7	237.0	248.5
Diluted (in shares)	232.2	239.7	250.8