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Reportable Segments - Financial performance (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information |  |  |  |
Property-Liability net investment income | $ 690 | $ 764 | $ 1,846 | $ 2,446
Net gains (losses) on investments and derivatives | (167) | 105 | (1,167) | 818
Pension and other postretirement remeasurement gains (losses) | (79) | (40) | (91) | 404
Income (loss) from discontinued operations | 0 | 235 | 0 | (3,435)
Income tax benefit from discontinued operations | 0 | 90 | 0 | 163
Income (loss) from discontinued operations, net of tax | 0 | 325 | 0 | (3,272)
Less: Net income (loss) attributable to noncontrolling interest | (15) | (7) | (34) | (7)
Net (loss) income applicable to common shareholders | (694) | 508 | (1,106) | 695
Segment Reconciling Items |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 598 | 727 | 754 | 2,428
Net gains (losses) on investments and derivatives | (167) | 105 | (1,167) | 818
Pension and other postretirement remeasurement gains (losses) | (79) | (40) | (91) | 404
Business combination expenses and amortization of purchased intangibles | (29) | (34) | (86) | (124)
Business combination fair value adjustment | 0 | 0 | 0 | 6
Gain (loss) on disposition of operations | (5) | 0 | 6 | 0
Income tax benefit (expense) on reconciling items | 246 | (14) | 396 | (990)
Allstate Protection | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | (1,170) | (421) | (1,749) | 1,670
Run-off Property-Liability | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | (122) | (113) | (127) | (118)
Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Property-Liability net investment income | 632 | 710 | 1,696 | 2,314
Net gains (losses) on investments and derivatives | (123) | 94 | (988) | 763
Less: Net income (loss) attributable to noncontrolling interest | (15) | (7) | (35) | (7)
Property-Liability | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | (1,292) | (534) | (1,876) | 1,552
Property-Liability | Segment Reconciling Items |  |  |  |
Segment Reporting Information |  |  |  |
Property-Liability net investment income | 632 | 710 | 1,696 | 2,314
Protection Services | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 35 | 45 | 131 | 150
Allstate Health and Benefits |  |  |  |
Segment Reporting Information |  |  |  |
Property-Liability net investment income | 17 | 18 | 50 | 56
Net gains (losses) on investments and derivatives | (6) | (1) | (25) | 5
Allstate Health and Benefits | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 54 | 33 | 172 | 160
Corporate and Other | Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | (104) | (95) | (322) | (330)
Property-Liability net investment income | 28 | 26 | 66 | 44
Net gains (losses) on investments and derivatives | $ (25) | $ 8 | $ (98) | $ 30

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