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Reportable Segments - Financial performance (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information |  |  |  |  |
Net investment income | $ 409 |  | $ 942 | $ 830 | $ 1,590
Net income applicable to common shareholders | 1,224 |  | 821 | 1,737 | 2,082
Shelter-in-Place Payback expense | 738 | $ 210 | 0 | 948 | 0
Allstate Protection |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Underwriting income (loss) | 907 |  | 370 | 2,255 | 1,073
Discontinued Lines and Coverages |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Underwriting income (loss) | (3) |  | (3) | (6) | (6)
Property-Liability |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Underwriting income (loss) | 904 |  | 367 | 2,249 | 1,067
Net investment income | 178 |  | 471 | 380 | 762
Income tax expense on operations | (209) |  | (179) | (512) | (381)
Realized capital gains (losses), after-tax | 299 |  | 204 | 217 | 597
Net income applicable to common shareholders | 1,172 |  | 863 | 2,334 | 2,045
Service Businesses |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net investment income | 11 |  | 10 | 21 | 19
Realized capital gains (losses), after-tax | 15 |  | 6 | (4) | 13
Adjusted net income | 38 |  | 16 | 75 | 27
Amortization of purchased intangibles, after-tax | (21) |  | (25) | (42) | (49)
Impairment of purchased intangibles, after-tax | 0 |  | (43) | 0 | (43)
Net income applicable to common shareholders | 32 |  | (46) | 29 | (52)
Allstate Life |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net investment income | 123 |  | 125 | 251 | 252
Realized capital gains (losses), after-tax | 16 |  | 0 | (9) | (4)
Adjusted net income | 72 |  | 68 | 152 | 141
Valuation changes on embedded derivatives not hedged, after-tax | (35) |  | 0 | (23) | 0
DAC and DSI amortization related to realized capital gains and losses, after-tax | 11 |  | (1) | 8 | (3)
Net income applicable to common shareholders | 64 |  | 67 | 128 | 134
Allstate Benefits |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net investment income | 20 |  | 21 | 40 | 40
Realized capital gains (losses), after-tax | 7 |  | 2 | (3) | 5
Adjusted net income | 5 |  | 37 | 29 | 68
Net income applicable to common shareholders | 12 |  | 39 | 26 | 73
Allstate Annuities |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net investment income | 66 |  | 296 | 113 | 486
Realized capital gains (losses), after-tax | 194 |  | 37 | (19) | 161
Adjusted net income | (111) |  | 52 | (250) | 27
Valuation changes on embedded derivatives not hedged, after-tax | (6) |  | (2) | (4) | (5)
Gain on disposition of operations, after-tax | 1 |  | 1 | 2 | 2
Net income applicable to common shareholders | 78 |  | 88 | (271) | 185
Corporate and Other |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Realized capital gains (losses), after-tax | 23 |  | 7 | 6 | 8
Adjusted net income | (99) |  | (98) | (206) | (201)
Pension and other postretirement remeasurement gains (losses), after-tax | (58) |  | (99) | (309) | (110)
Net income applicable to common shareholders | $ (134) |  | $ (190) | $ (509) | $ (303)

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