Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues
Net investment income	$ 594	$ 708
Net gains (losses) on investments and derivatives	(267)	426
Total revenues	12,337	12,451
Costs and expenses
Property and casualty insurance claims and claims expense	7,822	6,043
Accident, health and other policy benefits	269	242
Amortization of deferred policy acquisition costs	1,612	1,523
Operating costs and expenses	1,902	1,731
Pension and other postretirement remeasurement (gains) losses	(247)	(310)
Restructuring and related charges	12	51
Amortization of purchased intangibles	87	53
Interest expense	83	86
Total costs and expenses	11,540	9,419
Income from operations before income tax expense	797	3,032
Income tax expense	151	626
Net income from continuing operations	646	2,406
Income (loss) from discontinued operations, net of tax	0	(3,793)
Net income (loss)	646	(1,387)
Less: Net loss attributable to noncontrolling interest	(10)	(6)
Net income (loss) attributable to Allstate	656	(1,381)
Less: Preferred stock dividends	26	27
Net income (loss) applicable to common shareholders	$ 630	$ (1,408)
Basic
Earnings per common share - Continuing operations basic (in dollars per share)	$ 2.27	$ 7.88
Earnings per common share - Discontinued operations basic (in dollars per share)	0	(12.53)
Earnings per common share - Basic (in dollars per share)	2.27	(4.65)
Diluted
Earnings per common share - Continuing operations diluted (in dollars per share)	2.24	7.78
Earnings per common share - Discontinued operations diluted (in dollars per share)	0	(12.38)
Earnings per common share - Diluted (in dollars per share)	$ 2.24	$ (4.60)
Weighted average common shares - Basic (in shares)	278.1	302.5
Weighted average common shares - Diluted (in shares)	281.8	306.4
Property and casualty insurance premiums
Revenues
Property and casualty insurance premiums	$ 10,981	$ 10,307
Accident and health insurance premiums and contract charges
Revenues
Insurance premiums, commissions and fees	469	455
Other revenue
Revenues
Insurance premiums, commissions and fees	$ 560	$ 555