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v3.20.2

Fair Value Measurements - Transfers (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 3 into Level 2, net derivative assets (liabilities) |  |  | $ 26.5 |
Other investments |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  |  | $ 10.0
Separate account assets |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 3 into Level 2 |  |  |  | 173.2
Available-for-sale | Fixed maturities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 | $ 0.3 |  | 388.4 | 33.7
Transfers out of Level 3 into Level 2 | 31.3 | $ 7.3 | 556.9 | 35.6
Available-for-sale | Corporate debt securities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  | 342.0 |
Transfers out of Level 3 into Level 2 | 24.5 |  | 173.4 |
Available-for-sale | Commercial mortgage-backed securities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 | 0.3 |  | 0.3 | 3.7
Transfers out of Level 3 into Level 2 |  |  |  | 2.3
Available-for-sale | Collateralized debt obligations |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  |  | 30.0
Transfers out of Level 3 into Level 2 |  |  | 314.6 |
Available-for-sale | Other debt obligations |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  | 46.1 |
Transfers out of Level 3 into Level 2 | $ 6.8 | $ 7.3 | 68.9 | $ 33.3
Trading | Fixed maturities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 3 into Level 2 |  |  | $ 0.3 |

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