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Held for Sale and Discontinued Operations | 9 Months Ended
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Sep. 30, 2020
Discontinued Operations and Disposal Groups [Abstract] |
Held for Sale and Discontinued Operations | Held for Sale and Discontinued Operations Sirius Group As of September 30, 2020 and December 31, 2019, White Mountains recorded a liability of $17.2 million and $16.5 million, related to the Sirius Group tax contingency. For both the three and nine months ended September 30, 2020, the change in the liability of $0.7 million was related to foreign currency translation and included within net loss on sale of discontinued operations. For the three and nine months ended September 30, 2019, the decrease change in the liability of $0.9 million and $1.6 million was related to foreign currency translation and included within net gain on sale of discontinued operations. See Note 16 — “Commitments and Contingencies”. Other As of December 31, 2017, White Mountains has classified its Guilford, Connecticut property, which consists of an office building and adjacent land, as held for sale. On August 20, 2020, the office building was sold for $2.3 million. For both the three and nine months ended September 30, 2020, White Mountains recognized $0.1 million of realized loss on the sale of the office building. As of September 30, 2020, the adjacent land has been measured at its estimated fair value, net of costs of disposal, of $0.7 million. As of December 31, 2019, the property was measured at its estimated fair value, net of costs of disposal, of $3.0 million. Earnings Per Share from Discontinued Operations White Mountains calculates earnings per share using the two-class method, which allocates earnings between common and unvested restricted common shares. Both classes of shares participate equally in earnings on a per share basis. Basic earnings per share amounts are based on the weighted average number of common shares outstanding adjusted for unvested restricted common shares. Diluted earnings per share amounts are also impacted by the net effect of potentially dilutive common shares outstanding. The following table presents the Company’s computation of earnings per share for discontinued operations for the three and nine months ended September 30, 2020 and 2019:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30 |  | September 30
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Basic and diluted earnings per share numerators (in millions): |  |  |  |  |  |  |  |
Net income attributable to White Mountains’s common shareholders |  | $ | 232.9 |  |  | $ | 48.7 |  |  | $ | 219.5 |  |  | $ | 353.6 |
Less: total income from continuing operations, net of tax |  | 233.6 |  |  | 47.8 |  |  | 220.3 |  |  | 352.0 |
Net (loss) income from discontinued operations attributable to White Mountains’s common shareholders |  | $ | (.7 | ) |  | $ | .9 |  |  | $ | (.8 | ) |  | $ | 1.6 |
Allocation of earnings to participating restricted common shares (1) |  | — |  |  | — |  |  | — |  |  | — |
Basic and diluted (losses) earnings per share numerators (2) |  | $ | (.7 | ) |  | $ | .9 |  |  | $ | (.8 | ) |  | $ | 1.6 |
Basic earnings per share denominators (in thousands): |  |  |  |  |  |  |  |  |
Total average common shares outstanding during the period |  | 3,101.8 |  |  | 3,185.4 |  |  | 3,129.0 |  |  | 3,180.4 |
Average unvested restricted common shares (3) |  | (43.1 | ) |  | (43.4 | ) |  | (40.0 | ) |  | (39.6 | )
Basic earnings per share denominator |  | 3,058.7 |  |  | 3,142.0 |  |  | 3,089.0 |  |  | 3,140.8 |
Diluted earnings per share denominator (in thousands): |  |  |  |  |  |  |  |  |
Total average common shares outstanding during the period |  | 3,101.8 |  |  | 3,185.4 |  |  | 3,129.0 |  |  | 3,180.4 |
Average unvested restricted common shares (3) |  | (43.1 | ) |  | (43.4 | ) |  | (40.0 | ) |  | (39.6 | )
Diluted earnings per share denominator |  | 3,058.7 |  |  | 3,142.0 |  |  | 3,089.0 |  |  | 3,140.8 |
Basic and diluted (losses) earnings per share (in dollars) - discontinued operations: |  | $ | (.23 | ) |  | $ | .28 |  |  | $ | (.26 | ) |  | $ | .50 |
(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 three and nine months ended September 30, 2020 and 2019. (3) Restricted common shares outstanding vest either in equal annual installments or upon a stated date. See Note 10 — “Employee Share-Based Incentive Compensation Plans”.

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- Definition The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2122178 + Details
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