Schedule II (Details) - Condensed Income Statement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Statement of Income
Net investment income	$ 2,562	$ 3,033	$ 2,227
Net realized investment gains (losses)	(204)	171	2
Total revenues	36,884	34,816	31,981
Interest expense	351	340	339
Other	4,810	4,677	4,509
Total claims and expenses	33,530	30,358	28,744
Income before income taxes	3,354	4,458	3,237
Income tax expense (benefit)	512	796	540
Net income	2,842	3,662	2,697
Travelers [Member]
Condensed Statement of Income
Net investment income	30	13	19
Net realized investment gains (losses)	(51)	28	27
Total revenues	(21)	41	46
Interest expense	303	292	292
Other	13	13	18
Total claims and expenses	316	305	310
Income before income taxes	(337)	(264)	(264)
Income tax expense (benefit)	(99)	(59)	(61)
Loss before net income of subsidiaries	(238)	(205)	(203)
Net income of subsidiaries	3,080	3,867	2,900
Net income	$ 2,842	$ 3,662	$ 2,697