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v3.22.1

Subsequent Events - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
May 04, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Subsequent Event [Line Items] |  |  |  |  |
Principal |  |  | $ 1,945 |  | $ 1,993
Special cash dividend payable (USD per share) |  |  | $ 2.56 | $ 0.50 |
Subsequent event |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Special cash dividend payable (USD per share) | $ 8.00 |  |  |  |
Aggregate amount of special cash dividend | $ 680 |  |  |  |
Senior Notes | AFG |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Principal |  |  | $ 1,270 |  | 1,318
3.50% Senior Notes due August 2026 | Senior Notes | AFG |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Principal |  |  | $ 377 |  | $ 425
Interest rate on debt instruments |  |  | 3.50% |  |
3.50% Senior Notes due August 2026 | Senior Notes | AFG | Subsequent event |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Principal | $ 375 |  |  |  |
Interest rate on debt instruments | 3.50% |  |  |  |
3.50% Senior Notes due August 2026 | Senior Notes | AFG | Subsequent event | Maximum |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Loss on retirement of debt |  | $ 10 |  |  |

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