Investments - Additional Information, Accrued Performance Fees (Details) - fund	Mar. 31, 2021	Dec. 31, 2020
Concentration Risk [Line Items]
Number Of Partnerships Corporate Private Equity funds related to accrued performance fees	1	1
Carlyle Partners VI, L.P. \| Customer concentration risk \| Accrued performance allocations
Concentration Risk [Line Items]
Percentage of accrued performance fees related to certain Corporate Private Equity funds	38.00%	41.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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