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v3.4.0.3

Derivatives Variable Annuity Reinsurance Liabilities and Derivative Instruments (Details) $ in Millions, ¥ in Billions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Mar. 31, 2016 JPY (¥) | Dec. 31, 2015 USD ($) | Dec. 31, 2015 JPY (¥)
Changes in derivative instruments |  |  |  |  |
Collective account values of underlying variable annuities as a percentage of the guarantee value |  |  |  | 113.00% | 113.00%
White Mountains Life Re |  |  |  |  |
Variable Annuity Reinsurance [Line Items] |  |  |  |  |
Notional amount | $ 200.0 |  | ¥ 21.2 | $ 400.0 | ¥ 50.7
Fair Value Derivatives Measured on Recurring Basis, Asset Purchases | 0.0 |  |  |  |
Changes in derivative instruments |  |  |  |  |
Beginning of period | 20.1 | $ 56.4 |  |  |
Purchases |  | 0.0 |  |  |
Realized and unrealized gains (losses) | (1.7) | (5.5) |  |  |
Transfers in | 0.0 | 0.0 |  |  |
Sales/settlements | (5.3) | (3.9) |  |  |
End of period | 13.1 | 47.0 |  |  |
Change in fair value of variable annuity death benefit liabilities, included in other general and administrative expenses | $ 0.0 | 0.0 |  |  |
Collective account values of underlying variable annuities as a percentage of the guarantee value | 107.00% |  | 107.00% | 109.00% | 109.00%
White Mountains Life Re | Level 2 Inputs |  |  |  |  |
Variable Annuity Reinsurance [Line Items] |  |  |  |  |
Fair Value Derivatives Measured on Recurring Basis, Asset Purchases | $ 0.0 |  |  |  |
Changes in derivative instruments |  |  |  |  |
Beginning of period | 16.5 | 33.8 |  |  |
Purchases |  | 0.0 |  |  |
Realized and unrealized gains (losses) | 1.1 | (6.5) |  |  |
Transfers in | 0.0 | 0.0 |  |  |
Sales/settlements | (7.3) | 3.9 |  |  |
End of period | 10.3 | 31.2 |  |  |
White Mountains Life Re | Level 1 Inputs |  |  |  |  |
Variable Annuity Reinsurance [Line Items] |  |  |  |  |
Fair Value Derivatives Measured on Recurring Basis, Asset Purchases | 0.0 |  |  |  |
Changes in derivative instruments |  |  |  |  |
Beginning of period | 0.9 | 3.7 |  |  |
Purchases |  | 0.0 |  |  |
Realized and unrealized gains (losses) | (4.0) | 1.6 |  |  |
Transfers in | 0.0 | 0.0 |  |  |
Sales/settlements | 3.3 | (6.5) |  |  |
End of period | 0.2 | (1.2) |  |  |
Variable Annuity | White Mountains Life Re | Level 3 Inputs |  |  |  |  |
Variable Annuity Reinsurance [Line Items] |  |  |  |  |
Fair Value Derivatives Measured on Recurring Basis, Asset Purchases | 0.0 |  |  |  |
Changes in derivative instruments |  |  |  |  |
Beginning balance | 0.3 | 0.7 |  |  |
Realized and unrealized gains (losses) | (0.4) | 0.4 |  |  |
Transfers in | 0.0 | 0.0 |  |  |
Sales/settlements | 0.0 | 0.0 |  |  |
Ending balance | (0.1) | 1.1 |  |  |
Purchases |  | 0.0 |  |  |
Derivative [Member] | White Mountains Life Re | Level 3 Inputs |  |  |  |  |
Variable Annuity Reinsurance [Line Items] |  |  |  |  |
Fair Value Derivatives Measured on Recurring Basis, Asset Purchases | 0.0 |  |  |  |
Changes in derivative instruments |  |  |  |  |
Beginning of period | 2.7 | 18.9 |  |  |
Purchases |  | 0.0 |  |  |
Realized and unrealized gains (losses) | 1.2 | (0.6) |  |  |
Transfers in | 0.0 | 0.0 |  |  |
Sales/settlements | (1.3) | (1.3) |  |  |
End of period | $ 2.6 | $ 17.0 |  |  |

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