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v3.21.2

Fair Value Measurements - Transfers (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 3 into Level 2, net derivative assets (liabilities) |  |  |  | $ 26.5
Available-for-sale | Fixed maturities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 | $ 25.1 | $ 0.3 | $ 272.3 | 388.4
Transfers out of Level 3 into Level 2 | 197.8 | 31.3 | 423.2 | 556.9
Available-for-sale | Corporate debt securities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 | 25.1 |  | 167.6 | 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
Available-for-sale | Collateralized debt obligations |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  | 84.1 |
Transfers out of Level 3 into Level 2 | 172.8 |  | 398.2 | 314.6
Available-for-sale | Other debt obligations |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 2 into Level 3 |  |  | 20.6 | 46.1
Transfers out of Level 3 into Level 2 | $ 25.0 | $ 6.8 | $ 25.0 | 68.9
Trading | Fixed maturities |  |  |  |
Fair Value Hierarchy Levels Transfers |  |  |  |
Transfers out of Level 3 into Level 2 |  |  |  | $ 0.3

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