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Derivatives (Pre-Tax Operating Results of WM Life Re) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Pre-tax operating results of WM Life Re |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 268.2 | $ 365.0 | $ 358.2 | $ 369.3 | $ 602.6 | $ 296.1 | $ 368.7 | $ 354.3 | $ 1,360.7 | $ 1,621.7 | $ 1,411.1
General and administrative expenses |  |  |  |  |  |  |  |  | (299.9) | (302.2) | (216.5)
Pre-tax (loss) income from continuing operations | $ (66.8) | $ 20.0 | $ (2.1) | $ 8.5 | $ 246.3 | $ (86.9) | $ (5.1) | $ 3.0 | (40.4) | 157.3 | (29.4)
White Mountains Life Re |  |  |  |  |  |  |  |  |  |  |
Pre-tax operating results of WM Life Re |  |  |  |  |  |  |  |  |  |  |
Fees, included in other revenue |  |  |  |  |  |  |  |  | 1.2 | 9.3 | 18.6
Change in Fair Value of Variable Annuity Liability, included in other revenues |  |  |  |  |  |  |  |  | (0.3) | (0.4) | 52.9
Change in fair value of derivatives, included in other revenue |  |  |  |  |  |  |  |  | (2.0) | (8.8) | (72.4)
Foreign exchange, included in other revenue |  |  |  |  |  |  |  |  | 1.3 | (1.3) | (3.2)
Other investment income and losses |  |  |  |  |  |  |  |  | 0.0 | (0.4) | (1.4)
Total revenues |  |  |  |  |  |  |  |  | 0.2 | (1.6) | (5.5)
Change in fair value of variable annuity death benefit liabilities, included in general and administrative expenses |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.6
Death benefit claims paid, included in general and administrative expenses |  |  |  |  |  |  |  |  | (0.3) | (0.1) | (0.1)
General and administrative expenses |  |  |  |  |  |  |  |  | (2.6) | (4.0) | (4.3)
Pre-tax (loss) income from continuing operations |  |  |  |  |  |  |  |  | $ (2.7) | $ (5.7) | (9.3)
Level 3 Inputs | Projected Surrender Assumption [Member] | White Mountains Life Re |  |  |  |  |  |  |  |  |  |  |
Pre-tax operating results of WM Life Re |  |  |  |  |  |  |  |  |  |  |
Change in fair value of derivatives, included in other revenue |  |  |  |  |  |  |  |  |  |  | $ 0.2

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- Definition Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products. + 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 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c),(d)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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