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Business Combinations - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 20, 2021 | Mar. 31, 2021
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Estimated fair value of assets acquired and liabilities assumed: |  |  |
Goodwill | $ 582,973 |  | $ 6,792
Greenspring |  |  |
Estimated fair value of assets acquired and liabilities assumed: |  |  |
Cash and short-term receivables |  | $ 5,723 |
Legacy Greenspring investments in funds and accrued carried interest allocations |  | 1,213,792 |
Lease right-of-use assets, net |  | 2,585 |
Other assets and receivables |  | 2,146 |
Goodwill |  | 576,181 |
Deferred income taxes |  | (98,538) |
Accrued expenses and other liabilities |  | (4,460) |
Legacy Greenspring accrued carried interest-related compensation |  | (992,646) |
Lease liabilities |  | (2,585) |
Non-controlling interests in legacy Greenspring entities |  | (221,146) |
Total |  | 898,183 |
Greenspring | Contractual rights: management contracts |  |  |
Estimated fair value of assets acquired and liabilities assumed: |  |  |
Finite-lived intangible assets |  | 310,944 |
Greenspring | Client relationships |  |  |
Estimated fair value of assets acquired and liabilities assumed: |  |  |
Finite-lived intangible assets |  | 96,650 |
Greenspring | Contractual rights: service agreements |  |  |
Estimated fair value of assets acquired and liabilities assumed: |  |  |
Finite-lived intangible assets |  | $ 9,537 |

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