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Fair Value Measurements - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments | $ 18,800,000 |  | $ 18,800,000 |  | $ 18,400,000
Impairment of non-marketable investments | 0 | $ 0 | 0 | $ 0 |
Equity investments included in other assets | 8,800,000 |  | 8,800,000 |  | 8,800,000
Financial assets impairment charges |  | 0 |  | 0 |
Impairment of non-financial assets | 0 | $ 0 | 0 | $ 0 |
Recurring | Level 1 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Investments in privately held companies | $ 33,183,000 |  | $ 33,183,000 |  | $ 29,006,000

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