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Business Combinations - Summary of Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands | Mar. 01, 2020 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 800,267 | $ 774,534
H G P E Capital Limited |  |  |
Business Acquisition [Line Items] |  |  |
Cash and Cash Equivalents | $ 14,000 |  |
Other Current Assets | 11,300 |  |
Goodwill | 19,100 |  |
Intangible Assets | 27,600 |  |
Other Long-Term Assets | 9,800 |  |
Less: Liabilities Acquired | (26,900) |  |
Less: Fair Value of Redeemable Noncontrolling Interest in Subsidiary | (34,500) |  |
Total Purchase Price Consideration | 20,400 |  |
Receivables | 4,600 |  |
H G P E Capital Limited | Customer Relationships |  |  |
Business Acquisition [Line Items] |  |  |
Customer relationships | $ 20,300 |  |
Weighted-average useful life | 9 years |  |
H G P E Capital Limited | Rights to Manage Fund Assets |  |  |
Business Acquisition [Line Items] |  |  |
Customer relationships | $ 6,900 |  |
Weighted-average useful life | 11 years |  |

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- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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- Definition Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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