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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues: |  |  |
Earned insurance premiums | $ 10.4 | $ 13.4 | $ 12.0
Net investment income | 56.0 | 32.1 | 10.9
Net realized and unrealized investment gains | 133.3 | (27.4) | 260.5
Advertising & commission revenues | 167.0 | 118.3 | 107.4
Other revenues | 7.1 | 21.3 | 49.2
Total revenues | 373.8 | 157.7 | 440.0
Expenses: |  |  |
Loss and loss adjustment expenses | 1.1 | 8.0 | 8.2
Insurance acquisition expenses | 4.1 | 5.6 | 6.3
Cost of Sales | 139.4 | 102.0 | 93.6
Other underwriting expenses | 0.4 | 0.4 | 0.4
General and administrative expenses | 218.7 | 186.0 | 200.7
Amortization of other intangible assets | 10.7 | 10.5 | 8.4
Interest expense | 2.3 | 3.0 | 1.6
Total expenses | 366.0 | 305.0 | 310.8
Pre-tax (loss) income from continuing operations | 7.8 | (147.3) | 129.2
Gain (loss) from sale of other discontinued operations, net of tax | 557.0 | 415.1 | 18.2
Income tax benefit (expense) | 7.8 | 32.9 | (12.7)
Net income (loss) from continuing operations | 15.6 | (114.4) | 116.5
Net (loss) income from discontinued operations, net of tax | 20.5 | 108.3 | 116.9
Income before equity in earnings of unconsolidated affiliates | 593.1 | 409.0 | 251.6
Equity in earnings of unconsolidated affiliates | 0.0 | 0.0 | 25.1
Net income | 593.1 | 409.0 | 276.7
Net (income) loss attributable to non-controlling interests | 34.1 | (7.2) | 18.5
Net income attributable to White Mountains’s common shareholders | 627.2 | 401.8 | 295.2
OneBeacon |  |  |
Expenses: |  |  |
Gain (loss) from sale of other discontinued operations, net of tax | 554.5 | 0.0 | 0.0
Net (loss) income from discontinued operations, net of tax | 20.5 | 108.6 | 38.2
Sale of Sirius Group |  |  |
Expenses: |  |  |
Gain (loss) from sale of other discontinued operations, net of tax | (0.7) | 363.2 | 0.0
Tranzact |  |  |
Expenses: |  |  |
Gain (loss) from sale of other discontinued operations, net of tax | 3.2 | 51.9 | 0.0
Esurance |  |  |
Expenses: |  |  |
Gain (loss) from sale of other discontinued operations, net of tax | 0.0 | 0.0 | 17.9
Other Discontinued Operations |  |  |
Expenses: |  |  |
Gain (loss) from sale of other discontinued operations, net of tax | 0.0 | 0.0 | 0.3
HG Global BAM |  |  |
Revenues: |  |  |
Earned insurance premiums | 9.4 | 5.9 | 3.3
Net investment income | 12.3 | 9.0 | 6.1
Net realized and unrealized investment gains | 0.6 | 0.7 | 0.6
Other revenues | 1.0 | 1.1 | 0.7
Total revenues | 23.3 | 16.7 | 10.7
Expenses: |  |  |
Insurance acquisition expenses | 4.0 | 3.4 | 2.9
Other underwriting expenses | 0.4 | 0.4 | 0.4
General and administrative expenses | 42.9 | 39.6 | 36.8
Total expenses | 47.3 | 43.4 | 40.1
MediaAlpha |  |  |
Revenues: |  |  |
Advertising & commission revenues | 163.2 | 116.5 | 105.5
Total revenues | 163.2 | 116.5 | 105.5
Expenses: |  |  |
Cost of Sales | 135.9 | 97.8 | 90.7
General and administrative expenses | 16.2 | 11.8 | 8.3
Amortization of other intangible assets | 10.5 | 10.1 | 8.1
Interest expense | 1.0 | 0.9 | 0.4
Total expenses | 163.6 | 120.6 | 107.5
Other |  |  |
Revenues: |  |  |
Earned insurance premiums | 1.0 | 7.5 | 8.7
Net investment income | 43.7 | 23.1 | 4.8
Net realized and unrealized investment gains | 132.7 | (28.1) | 259.9
Advertising & commission revenues | 3.8 | 1.8 | 1.9
Other revenues | 6.1 | 20.2 | 48.5
Total revenues | 187.3 | 24.5 | 323.8
Expenses: |  |  |
Loss and loss adjustment expenses | 1.1 | 8.0 | 8.2
Insurance acquisition expenses | 0.1 | 2.2 | 3.4
Cost of Sales | 3.5 | 4.2 | 2.9
General and administrative expenses | 148.9 | 124.1 | 147.0
Amortization of other intangible assets | 0.2 | 0.4 | 0.5
Interest expense | 1.3 | 2.1 | 1.2
Total expenses | $ 155.1 | $ 141.0 | $ 163.2

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- Definition Revenue from the sale of advertising time (such as television and radio) or space (newspaper or magazine pages). May also include advertising, marketing and promotional services rendered during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The total amount of expense recognized during the period for future policy benefits, claims and claims adjustment costs, and for selling, general and administrative costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.5,6,7) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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