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Summary of Significant Accounting Policies - Intangible Assets and Goodwill (Details) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2024 | Jan. 01, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Impairment charge on intangibles |  |  | $ 0 | $ 0 | $ 0
Goodwill impairment | $ 0 | $ 0 | 0 | 0 | 0
Impairment charges |  |  | $ 0 | $ 0 | $ 0
Programs and contract assets, channel relationships, and other amortizable intangible assets | Minimum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life (in years) |  |  | 2 years |  |
Programs and contract assets, channel relationships, and other amortizable intangible assets | Maximum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life (in years) |  |  | 14 years |  |
Software | Minimum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life (in years) |  |  | 1 year |  |
Software | Maximum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life (in years) |  |  | 10 years |  |

X
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