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

Mar. 31, 2025

Dec. 31, 2024

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

$ 6,371

$ 6,028

Aggregate unfunded commitments

4,400

4,400

Equity method investments

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

^[1]

6,340

5,980

Aggregate unfunded commitments

4,300

4,300

Fair value option

Schedule of Equity Method Investments [Line Items]

Maximum Exposure to Loss

^[2]

31

48

Aggregate unfunded commitments

$ 21

$ 21

[1]	Aggregate unfunded commitments were $4.3 billion at March 31, 2025, consistent with $4.3 billion at December 31, 2024.
[2]	Aggregate unfunded commitments were $21 million at March 31, 2025, consistent with $21 million at December 31, 2024

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