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Derivative Financial Instruments - Effect of Hedges on Consolidated Statements of Operations (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Gains (losses) recognized for hedging relationships |  |  |
Net investment income (loss) |  | $ 1,118.1 | $ 1,028.1
Net realized capital gains (losses) | [1] | (110.5) | 151.4
Benefits, claims and settlement expenses |  | 1,459.9 | 1,374.7
Fair Value Hedges | Interest rate contracts | Net investment income |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Gain (loss) recognized on hedged item |  | (71.1) | (23.4)
Gain (loss) recognized on derivatives |  | 68.0 | 23.7
Amortization of hedged item basis adjustments |  | (0.4) | (0.6)
Amounts related to periodic settlements on derivatives |  | (4.2) | (2.2)
Total gain (loss) recognized for hedging relationships |  | (7.7) | (2.5)
Cash Flow Hedges | Net investment income |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Total gain (loss) recognized for hedging relationships |  | 6.0 | 6.2
Cash Flow Hedges | Net realized capital gains (losses) |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Total gain (loss) recognized for hedging relationships |  | 3.5 | 0.3
Cash Flow Hedges | Benefits, claims and settlement expenses |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Total gain (loss) recognized for hedging relationships |  | (0.2) |
Cash Flow Hedges | Interest rate contracts | Gain (loss) reclassified from AOCI on derivatives |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Net investment income (loss) |  | 3.3 | 4.1
Cash Flow Hedges | Interest rate contracts | Net realized capital gains (losses) |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Gain (loss) reclassified from AOCI into net income as a result that a forecasted transaction is no longer probable of occurring |  | 2.9 | 0.3
Cash Flow Hedges | Interest rate contracts | Benefits, claims and settlement expenses |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Amounts related to periodic settlements on derivatives |  | (0.2) |
Cash Flow Hedges | Foreign exchange contracts | Gain (loss) reclassified from AOCI on derivatives |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Net realized capital gains (losses) |  | 0.6 |
Cash Flow Hedges | Foreign exchange contracts | Net investment income |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Amounts related to periodic settlements on derivatives |  | 2.7 | 2.1
Net investment hedging relationships |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Amount of gain (loss) recognized in accumulated OCI on derivatives |  | (0.7) | 2.2
Net investment hedging relationships | Foreign exchange contracts |  |  |
Gains (losses) recognized for hedging relationships |  |  |
Amount of gain (loss) recognized in accumulated OCI on derivatives |  | $ (0.7) | $ 2.2
[1] | Includes realized and unrealized gains (losses). See Note 3, Investments, for further details.

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