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v3.8.0.1

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Effect of Fourth Quarter Events [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues (loss) (including realized gains and losses) |  | $ 87.5 | $ 83.5 | $ 88.8 | $ (5.5) | $ 56.8 | $ 48.4 | $ 58.0 | $ 373.8 | $ 157.7 | $ 440.0
Total expenses |  | 79.1 | 85.7 | 92.4 | 69.0 | 70.6 | 74.1 | 91.3 | 366.0 | 305.0 | 310.8
Pre-tax (loss) income from continuing operations | $ 5.2 | 8.4 | (2.2) | (3.6) | (74.5) | (13.8) | (25.7) | (33.3) | 7.8 | (147.3) | 129.2
Income tax benefit (expense) | 2.5 | 4.0 | 1.0 | 0.3 | 10.2 | 17.1 | 4.0 | 1.6 | 7.8 | 32.9 | (12.7)
Net income (loss) from continuing operations | 7.7 | 12.4 | (1.2) | (3.3) | (64.3) | 3.3 | (21.7) | (31.7) | 15.6 | (114.4) | 116.5
Net (loss) income from discontinued operations, net of tax | 4.3 | 539.1 | 2.8 | 31.3 | 8.0 | 84.4 | 383.6 | 47.4 | 20.5 | 108.3 | 116.9
Non-controlling interest in consolidated subsidiaries | 10.5 | 10.6 | 12.0 | 1.0 | 17.4 | 3.1 | (21.5) | (6.2) | 34.1 | (7.2) | 18.5
Equity in earnings of unconsolidated affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 25.1
Net income attributable to White Mountains’s common shareholders | $ 22.5 | $ 562.1 | $ 13.6 | $ 29.0 | $ (38.9) | $ 90.8 | $ 340.4 | $ 9.5 | $ 627.2 | $ 401.8 | $ 295.2
Basic earnings per share |  |  |  |  |  |  |  |  |  |  |
Continuing operations | $ 4.85 | $ 5.36 | $ 2.36 | $ (0.50) | $ (10.27) | $ 1.31 | $ (8.47) | $ (6.85) | $ 11.56 | $ (24.26) | $ 27.22
Discontinued operations | 1.15 | 125.45 | 0.61 | 6.86 | 1.75 | 17.34 | 75.27 | 8.55 | 134.50 | 104.37 | 22.98
Total consolidated operations | 6.00 | 130.81 | 2.97 | 6.36 | (8.52) | 18.65 | 66.80 | 1.70 | 146.06 | 80.11 | 50.20
Diluted earnings per share |  |  |  |  |  |  |  |  |  |  |
Continuing operations | 4.85 | 5.36 | 2.36 | (0.50) | (10.27) | 1.31 | (8.47) | (6.85) | 11.56 | (24.26) | 27.22
Discontinued operations | 1.15 | 125.45 | 0.61 | 6.86 | 1.75 | 17.30 | 75.11 | 8.55 | 134.50 | 104.32 | 22.98
Total consolidated operations | $ 6.00 | $ 130.81 | $ 2.97 | $ 6.36 | $ (8.52) | $ 18.61 | $ 66.64 | $ 1.70 | $ 146.06 | $ 80.06 | $ 50.20

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