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Held for Sale and Discontinued Operations (Tables) | 12 Months Ended
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Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract] |
Schedule of earnings per share for discontinued operations | The following table presents the Company’s computation of earnings per share for discontinued operations for the years ended December 31, 2021, 2020 and 2019:
|  | Year Ended December 31,
|  | 2021 |  | 2020 |  | 2019
Basic and diluted earnings per share numerators (in millions): |  |  |  |  |  |
Net income (loss) attributable to White Mountains’s common shareholders |  | $ | (275.4) |  |  | $ | 708.7 |  |  | $ | 414.5 |
Less: total income (loss) from continuing operations, net of tax |  | (294.1) |  |  | 711.0 |  |  | 413.7 |
Net income (loss) from discontinued operations attributable to White Mountains’s common shareholders |  | 18.7 |  |  | (2.3) |  |  | .8 |
Allocation of (earnings) losses to participating restricted common shares (1) |  | (.2) |  |  | — |  |  | — |
Basic and diluted (loss) earnings per share numerators |  | $ | 18.5 |  |  | $ | (2.3) |  |  | $ | .8 |
Basic earnings per share denominators (in thousands): |  |  |  |  |  |
Total average common shares outstanding during the period |  | 3,079.0 |  |  | 3,122.2 |  |  | 3,181.6 |
Average unvested restricted common shares (3) |  | (36.5) |  |  | (40.8) |  |  | (40.5) |
Basic earnings (loss) per share denominator |  | 3,042.5 |  |  | 3,081.4 |  |  | 3,141.1 |
Diluted earnings per share denominator (in thousands): |  |  |  |  |  |
Total average common shares outstanding during the period |  | 3,079.0 |  |  | 3,122.2 |  |  | 3,181.6 |
Average unvested restricted common shares (3) |  | (36.5) |  |  | (40.8) |  |  | (40.5) |
Diluted earnings (loss) per share denominator |  | 3,042.5 |  |  | 3,081.4 |  |  | 3,141.1 |
Basic (loss) earnings per share (in dollars) - discontinued operations: |  | $ | 6.07 |  |  | $ | (.75) |  |  | $ | .25 |
Diluted (loss) earnings per share (in dollars) - discontinued operations: |  | $ | 6.07 |  |  | $ | (.75) |  |  | $ | .25 |
(1)Restricted shares issued by White Mountains contain dividend participation features, and therefore, are considered participating securities. (2)Net earnings attributable to White Mountains’s common shareholders, net of restricted share amounts, is equal to undistributed earnings for the years ended December 31, 2021, 2020 and 2019. (3)Restricted common shares outstanding vest either in equal annual installments or upon a stated date. See Note 12 — “Employee Share-Based Compensation Plans”.

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from discontinued operations, including the effect that has been given to preferred dividends. + References No definition available. + Details
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