Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenues
Other revenue	$ 719	$ 762
Net investment income	938	854
Net gains (losses) on investments and derivatives	(405)	(349)
Total revenues	16,941	16,452
Costs and expenses
Accident, health and other policy benefits	76	333
Amortization of deferred policy acquisition costs	2,178	2,087
Operating costs and expenses	2,225	2,245
Pension and other postretirement remeasurement (gains) losses	19	78
Restructuring and related charges	5	16
Amortization of purchased intangibles	47	59
Interest expense	98	100
Total costs and expenses	13,833	15,733
Income from operations before income tax expense	3,108	719
Income tax expense	650	123
Net income	2,458	596
Less: Net income attributable to noncontrolling interest	1	1
Net income attributable to Allstate	2,457	595
Less: Preferred stock dividends	29	29
Net income applicable to common shareholders, basic	2,428	566
Net income applicable to common shareholders, diluted	$ 2,428	$ 566
Earnings per common share:
Net income applicable to common shareholders per common share - Basic (in dollars per share)	$ 9.36	$ 2.13
Weighted average common shares - Basic (in shares)	259.4	265.3
Net income applicable to common shareholders per common share - Diluted (in dollars per share)	$ 9.25	$ 2.11
Weighted average common shares - Diluted (in shares)	262.6	268.8
Property and casualty insurance premiums
Revenues
Insurance premiums and contract charges	$ 15,553	$ 14,698
Costs and expenses
Property and casualty insurance claims and claims expense	9,185	10,815
Accident and health insurance premiums and contract charges
Revenues
Insurance premiums and contract charges	$ 136	$ 487