Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues
Other revenue	$ 691	$ 781	$ 2,200	$ 2,129
Net investment income	949	783	2,557	2,259
Net gains (losses) on investments and derivatives	252	243	(241)	(24)
Total revenues	17,255	16,627	50,340	47,600
Costs and expenses
Accident, health and other policy benefits	67	317	588	904
Amortization of deferred policy acquisition costs	2,101	2,037	6,264	5,977
Operating costs and expenses	2,265	2,217	6,645	6,121
Pension and other postretirement remeasurement (gains) losses	(108)	26	(30)	15
Restructuring and related charges	17	28	48	51
Amortization of purchased intangibles	59	71	175	210
Interest expense	101	104	301	299
Total costs and expenses	13,156	15,209	43,709	44,288
Gain on disposition of operations	720	0	1,610	0
Income from operations before income tax expense	4,819	1,418	8,241	3,312
Income tax expense	1,075	254	1,802	603
Net income	3,744	1,164	6,439	2,709
Less: Net loss attributable to noncontrolling interest	(2)	(26)	(11)	(30)
Net income attributable to Allstate	3,746	1,190	6,450	2,739
Less: Preferred stock dividends	29	29	88	88
Net income applicable to common shareholders, basic	3,717	1,161	6,362	2,651
Net income applicable to common shareholders, diluted	$ 3,717	$ 1,161	$ 6,362	$ 2,651
Earnings per common share:
Net income applicable to common shareholders per common share - Basic (in dollars per share)	$ 14.13	$ 4.39	$ 24.07	$ 10.04
Weighted average common shares - Basic (in shares)	263.1	264.6	264.3	264.1
Net income applicable to common shareholders per common share - Diluted (in dollars per share)	$ 13.95	$ 4.33	$ 23.76	$ 9.91
Weighted average common shares - Diluted (in shares)	266.4	268.0	267.8	267.4
Property and casualty insurance premiums
Revenues
Insurance premiums and contract charges	$ 15,253	$ 14,333	$ 44,992	$ 41,797
Costs and expenses
Property and casualty insurance claims and claims expense	8,654	10,409	29,718	30,711
Accident and health insurance premiums and contract charges
Revenues
Insurance premiums and contract charges	$ 110	$ 487	$ 832	$ 1,439