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Investment Information - Limited partnership interests (Details) - USD ($)
$ in Thousands

Mar. 31, 2021

Dec. 31, 2020

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

$ 2,452,414

$ 2,232,609

Aggregate unfunded commitments

2,300,000

2,100,000

Equity method investments

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

^[1]

2,256,327

2,047,889

Aggregate unfunded commitments

2,000,000

1,800,000

Fair value option

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

^[2]

196,087

184,720

Aggregate unfunded commitments

$ 36,100

$ 35,600

[1]	Aggregate unfunded commitments were $2.0 billion at March 31, 2021, compared to $1.8 billion at December 31, 2020.
[2]	Aggregate unfunded commitments were $36.1 million at March 31, 2021, compared to $35.6 million at December 31, 2020.

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Investment commitments primarily related to agreements entered into by the Company to invest in funds and separately managed accounts when called upon.

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
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