Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues
Net premiums written	$ 14,196	$ 13,360	$ 26,842	$ 25,581
Increase in unearned premiums	(1,071)	(1,068)	(1,717)	(1,706)
Net premiums earned	13,125	12,292	25,125	23,875
Net investment income	1,568	1,468	3,129	2,859
Net realized gains (losses)	160	104	44	3
Market risk benefits gains (losses)	(17)	(29)	(109)	(8)
Total revenues	14,836	13,835	28,189	26,729
Expenses
Losses and loss expenses	6,572	6,431	13,468	12,158
Policy benefits (includes remeasurement losses of $2, $3, $5 and $22)	1,406	1,219	2,633	2,399
Policy acquisition costs	2,415	2,226	4,728	4,433
Administrative expenses	1,125	1,094	2,205	2,164
Interest expense	181	182	362	360
Other (income) expense	(655)	(110)	(738)	(301)
Amortization of purchased intangibles	74	80	149	160
Integration expenses	2	7	2	14
Total expenses	11,120	11,129	22,809	21,387
Income before income tax	3,716	2,706	5,380	5,342
Income tax expense	717	490	1,038	832
Net income	2,999	2,216	4,342	4,510
Net income (loss) attributable to noncontrolling interests	31	(14)	43	137
Net income attributable to Chubb	2,968	2,230	4,299	4,373
Other comprehensive income (loss):
Unrealized appreciation (depreciation)	986	(489)	1,887	(1,166)
Current discount rate on future policy benefits	(130)	53	(252)	0
Instrument-specific credit risk on market risk benefits	1	5	5	10
Cumulative foreign currency translation adjustment	796	(530)	1,155	(450)
Other, including postretirement benefit liability adjustment	(26)	(29)	(121)	2
Other comprehensive income (loss), before income tax	1,627	(990)	2,674	(1,604)
Income tax (expense) benefit related to OCI items	(33)	29	(76)	38
Other comprehensive income (loss)	1,594	(961)	2,598	(1,566)
Comprehensive income	4,593	1,255	6,940	2,944
Comprehensive income (loss) attributable to noncontrolling interests	48	(57)	55	66
Comprehensive income attributable to Chubb	$ 4,545	$ 1,312	$ 6,885	$ 2,878
Earnings per share
Basic earnings per share attributable to Chubb	$ 7.42	$ 5.51	$ 10.74	$ 10.79
Diluted earnings per share attributable to Chubb	$ 7.35	$ 5.46	$ 10.63	$ 10.68