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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Statement of Comprehensive Income [Abstract] |  |  |
Net income (loss) attributable to White Mountains’s common shareholders | $ 230.4 | $ 509.2 | $ 792.8
Other comprehensive income (loss), net of tax | (0.1) | 2.4 | (3.8)
Other comprehensive income (loss) from discontinued operations, net of tax - NSM Group | 0.0 | 0.0 | (5.2)
Net gain (loss) from foreign currency translation from sale of discontinued operations, net of tax - NSM Group | 0.0 | 0.0 | 2.9
Comprehensive income (loss) | 230.3 | 511.6 | 786.7
Other comprehensive (income) loss attributable to noncontrolling interests | 0.0 | (0.5) | 0.9
Comprehensive income (loss) attributable to White Mountains’s common shareholders | $ 230.3 | $ 511.1 | $ 787.6
Basic earnings (loss) per share |  |  |
Continuing operations (usd per share) | $ 89.79 | $ 198.60 | $ (38.34)
Discontinued operations (usd per share) | 0 | 0 | 315.30
Total consolidated operations (usd per share) | 89.79 | 198.60 | 276.96
Diluted earnings (loss) per share |  |  |
Continuing operations (usd per share) | 89.79 | 198.60 | (38.34)
Discontinued operations (usd per share) | 0 | 0 | 315.30
Total consolidated operations (usd per share) | 89.79 | 198.60 | 276.96
Dividends declared per White Mountains’s common share (usd per share) | 1.00 | 1.00 | 1.00
Dividends paid per White Mountains’s common share (usd per share) | $ 1.00 | $ 1.00 | $ 1.00

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