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Summary of Significant Accounting Policies (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of operating segments | segment | 1 |  |
Fees paid to unaffiliated advisers | $ | $ 115.5 | $ 38.6 | $ 40.5
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Exercise period of noncontrolling interests | 4 years |  |
Weighted average of useful life | 0 years |  |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Exercise period of noncontrolling interests | 7 years |  |
Weighted average of useful life | 5 years |  |
Furniture and Office Equipment | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of furniture and equipment | 3 years |  |
Furniture and Office Equipment | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of furniture and equipment | 7 years |  |
Computer Equipment and Software | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of furniture and equipment | 3 years |  |
Computer Equipment and Software | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of furniture and equipment | 5 years |  |

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Details
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