Equity Method Investments - Investments in Datavant (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Mar. 31, 2026 |
|
| Equity Method Investments [Line Items] | |||||
| Aggregate fair value investment | $ 504,914 | $ 504,914 | $ 407,985 | ||
| Datavant | |||||
| Equity Method Investments [Line Items] | |||||
| Equity method investment ownership percentage | 9.00% | 9.00% | |||
| Aggregate fair value investment | $ 319,200 | $ 319,200 | $ 233,200 | ||
| Unrealized gains (losses) on investments | $ 61,100 | $ 72,200 | $ 86,100 | $ 68,600 | |
| X | ||||||||||
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|