Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Net premiums written	$ 13,104	$ 12,012	$ 35,765	$ 31,494
Increase in unearned premiums	(430)	(482)	(1,950)	(1,678)
Net premiums earned	12,674	11,530	33,815	29,816
Net investment income	1,314	979	3,566	2,689
Net realized gains (losses)	(103)	(456)	(484)	(936)
Market risk benefits gains (losses)	(32)	69	(154)	85
Total revenues	13,853	12,122	36,743	31,654
Expenses
Losses and loss expenses	7,106	7,063	17,937	16,833
Policy benefits (includes remeasurement gains of $25, $17, $21, and $11)	938	707	2,565	1,441
Policy acquisition costs	2,178	1,970	6,142	5,415
Administrative expenses	1,060	883	2,959	2,479
Interest expense	174	150	499	416
Other (income) expense	(154)	202	(550)	(9)
Amortization of purchased intangibles	84	69	226	211
Cigna integration expenses	14	23	51	26
Total expenses	11,400	11,067	29,829	26,812
Income before income tax	2,453	1,055	6,914	4,842
Income tax expense	413	263	1,189	907
Net Income	2,040	792	5,725	3,935
Net loss attributable to noncontrolling interests	(3)	0	(3)	0
Net income attributable to Chubb	2,043	792	5,728	3,935
Other comprehensive income (loss):
Change in unrealized depreciation	(2,170)	(3,045)	(1,578)	(12,041)
Current discount rate on future policy benefits	683	479	497	1,546
Instrument-specific credit risk on market risk benefits	(5)	8	3	48
Cumulative foreign currency translation adjustment	(317)	(942)	(279)	(1,631)
Other, including postretirement benefit liability adjustment	37	(59)	52	(35)
Other comprehensive loss, before income tax	(1,772)	(3,559)	(1,305)	(12,113)
Income tax (expense) benefit related to OCI items	0	109	(104)	1,071
Other comprehensive loss	(1,772)	(3,450)	(1,409)	(11,042)
Comprehensive income (loss)	268	(2,658)	4,316	(7,107)
Comprehensive loss attributable to noncontrolling interests	(79)	0	(79)	0
Comprehensive income (loss) attributable to Chubb	$ 347	$ (2,658)	$ 4,395	$ (7,107)
Earnings per share
Basic earnings per share attributable to Chubb	$ 4.99	$ 1.90	$ 13.90	$ 9.34
Diluted earnings per share attributable to Chubb	$ 4.95	$ 1.89	$ 13.79	$ 9.26