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Reportable Segments - Financial performance (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Segment Reporting Information |  |  |  |
Net investment income | $ 942 | $ 824 | $ 1,590 | $ 1,610
Net income applicable to common shareholders | 821 | 678 | 2,082 | 1,655
Allstate Protection |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | 370 | 458 | 1,073 | 1,466
Discontinued Lines and Coverages |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | (3) | (3) | (6) | (6)
Property-Liability |  |  |  |
Segment Reporting Information |  |  |  |
Underwriting income (loss) | 367 | 455 | 1,067 | 1,460
Net investment income | 471 | 353 | 762 | 690
Income tax expense on operations | (179) | (166) | (381) | (443)
Realized capital gains and losses, after-tax | 204 | (12) | 597 | (87)
Net income applicable to common shareholders | 863 | 630 | 2,045 | 1,620
Service Businesses |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 16 | 2 | 27 | (1)
Realized capital gains and losses, after-tax | 6 | (1) | 13 | (4)
Amortization of purchased intangibles, after-tax | (25) | (16) | (49) | (32)
Impairment of purchased intangibles, after-tax | (43) | 0 | (43) | 0
Net income applicable to common shareholders | (46) | (15) | (52) | (37)
Allstate Life |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 68 | 80 | 141 | 151
Realized capital gains and losses, after-tax | 0 | (2) | (4) | (4)
DAC and DSI amortization related to realized capital gains and losses, after-tax | (1) | (3) | (3) | (5)
Net income applicable to common shareholders | 67 | 75 | 134 | 142
Allstate Benefits |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 37 | 36 | 68 | 65
Realized capital gains and losses, after-tax | 2 | 0 | 5 | (2)
Net income applicable to common shareholders | 39 | 36 | 73 | 63
Allstate Annuities |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | 52 | 44 | 27 | 79
Realized capital gains and losses, after-tax | 37 | 5 | 161 | (18)
Valuation changes on embedded derivatives not hedged, after-tax | (2) | 0 | (5) | 4
Gain on disposition of operations, after-tax | 1 | 1 | 2 | 2
Net income applicable to common shareholders | 88 | 50 | 185 | 67
Corporate and Other |  |  |  |
Segment Reporting Information |  |  |  |
Adjusted net income (loss) | (98) | (95) | (201) | (185)
Realized capital gains and losses, after-tax | 7 | (9) | 8 | (10)
Pension and other postretirement remeasurement gains and losses, after-tax | (99) | 6 | (110) | (5)
Net income applicable to common shareholders | $ (190) | $ (98) | $ (303) | $ (200)

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