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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenues |  |  |
Earned insurance and reinsurance premiums | $ 2,063.6 | $ 1,924.5 | $ 2,029.0
Net investment income | 153.6 | 184.5 | 208.9
Net realized and unrealized investment gains | 118.2 | 74.1 | 77.6
Other revenue | 100.3 | (10.0) | 18.2
Total revenues | 2,435.7 | 2,173.1 | 2,333.7
Expenses |  |  |
Loss and loss adjustment expenses | 1,193.9 | 1,174.3 | 1,216.6
Insurance and reinsurance acquisition expenses | 430.2 | 402.2 | 419.6
Other underwriting expenses | 321.8 | 268.1 | 295.9
General and administrative expenses | 182.2 | 175.3 | 155.0
Interest expense on debt | 44.8 | 55.2 | 57.3
Total expenses | 2,172.9 | 2,075.1 | 2,144.4
Pre-tax income | 262.8 | 98.0 | 189.3
Income tax benefit (expense) | 15.7 | 110.0 | (29.6)
Net income from continuing operations | 278.5 | 208.0 | 159.7
Net loss from other discontinued operations, net of tax | (24.0) | (36.7) | (30.1)
Income before equity in earnings of unconsolidated affiliates | 163.5 | 829.6 | 129.6
Equity in earnings (losses) of unconsolidated affiliates | 29.9 | (20.2) | 9.9
Net income | 193.4 | 809.4 | 139.5
Net loss (income) attributable to non-controlling interests | 14.0 | (41.5) | (53.0)
Net income attributable to White Mountains’ common shareholders | 207.4 | 767.9 | 86.5
Comprehensive income (loss), net of tax: |  |  |
Change in equity in net unrealized gains (losses) from investments in Symetra common shares, net of tax | 57.7 | (58.5) | 73.5
Net change in foreign currency translation | 39.6 | (15.2) | 49.8
Net change in pension liability and other, net of tax | (2.9) | (10.8) | 6.3
Comprehensive income | 301.8 | 683.4 | 216.1
Comprehensive loss (income) attributable to non-controlling interests | 0.8 | 2.8 | (1.7)
Comprehensive income attributable to White Mountains’ common shareholders | $ 302.6 | $ 686.2 | $ 214.4
Basic earnings (loss) per share |  |  |
Continuing operations | $ 47.41 | $ 18.56 | $ 13.63
Discontinued operations | $ (16.91) | $ 78.88 | $ (3.51)
Total consolidated operations (in dollars per share) | $ 30.50 | $ 97.44 | $ 10.12
Diluted earnings (loss) per share |  |  |
Total consolidated operations | $ 47.41 | $ 18.56 | $ 13.63
Discontinued operations | $ (16.91) | $ 78.88 | $ (3.51)
Total consolidated operations (in dollars per share) | $ 30.50 | $ 97.44 | $ 10.12
Dividends declared and paid per White Mountains’ common share | $ 1.00 | $ 1.00 | $ 1.00

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- Definition Represents the change in the current period of the accumulated appreciation or loss, net of tax, in equity in unrealized gains or losses from investments in unconsolidated affiliates included in shareholders equity. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Represents the change in the current period of the accumulated appreciation or loss, net of tax, from foreign currency translation. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Includes changes, net of tax, in the net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost. Also includes change, net of tax, in accumulated gains and losses from derivative instruments (interest rate swaps) designated and qualifying as the effective portion of cash flow hedges. + References No definition available. + Details
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- Definition Income (loss) before equity in earnings of unconsolidated affiliates, extraordinary items and cumulative effect of changes in accounting principle. + References No definition available. + Details
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- Definition Amount of policy acquisition costs charged to expense in the period. Includes deferred policy acquisition costs amortized in the period, generally in proportion to related revenue earned over the policy or contract term. + References No definition available. + Details
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