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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Operating Loss Carryforwards [Line Items] |  |  |  |
Effective income tax rate (as a percent) | 24.40% | 23.10% | 22.20% | 23.10%
Minimum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Potential future tax expense that would arise | $ 40.4 |  | $ 40.4 |
Maximum |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Potential future tax expense that would arise | $ 64.3 |  | 64.3 |
Tax Years 2013-2015 |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax assessments |  |  | $ 11.7 |

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