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

Dec. 31, 2024

Dec. 31, 2023

Schedule of Equity Method Investments [Line Items]

Limited partnership interests

$ 6,028

$ 4,680

Aggregate commitments

4,400

3,600

Equity method investments

Schedule of Equity Method Investments [Line Items]

Limited partnership interests

^[1]

5,980

4,566

Aggregate commitments

4,300

3,400

Fair value option

Schedule of Equity Method Investments [Line Items]

Limited partnership interests

^[2]

48

114

Aggregate commitments

$ 21

$ 32

[1]	Aggregate unfunded commitments were $4.3 billion at December 31, 2024, compared to $3.4 billion at December 31, 2023.
[2]	Aggregate unfunded commitments were $21 million at December 31, 2024, compared to $32 million at December 31, 2023.

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