Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues
Net premiums written	$ 10,710	$ 9,189
Increase in unearned premiums	(568)	(452)
Net premiums earned	10,142	8,737
Net investment income	1,107	822
Net realized gains (losses)	(77)	23
Market risk benefits gains (losses)	(115)	49
Total revenues	11,057	9,631
Expenses
Losses and loss expenses	5,148	4,564
Policy benefits (includes remeasurement gains (losses) of $1 and $(5))	797	373
Policy acquisition costs	1,948	1,719
Administrative expenses	930	778
Interest expense	160	132
Other (income) expense	(296)	(312)
Amortization of purchased intangibles	72	71
Cigna integration expenses	22	0
Total expenses	8,781	7,325
Income before income tax	2,276	2,306
Income tax expense	384	353
Net income	1,892	1,953
Other comprehensive income (loss):
Change in unrealized depreciation	1,786	(4,652)
Current discount rate on future policy benefits	(151)	435
Instrument-specific credit risk on market risk benefits	(3)	23
Cumulative foreign currency translation adjustment	(177)	67
Other, including postretirement benefit liability adjustment	(33)	19
Other comprehensive income (loss), before income tax	1,422	(4,108)
Income tax (expense) benefit related to OCI items	(132)	779
Other comprehensive income (loss)	1,290	(3,329)
Comprehensive income (loss)	$ 3,182	$ (1,376)
Earnings per share
Basic earnings per share	$ 4.57	$ 4.59
Diluted earnings per share	$ 4.53	$ 4.55