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Investments (Rollforward of expected credit losses Private Debt HFI) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Private Debt, Held-for-investment, Allowance for Credit Loss [Line Items]
Private Debt Held-for-investment, Allowance for Credit Loss, Beginning Balance	$ 3	$ 5	$ 4	$ 4
Private Debt Held-for-investment, Allowance for Credit Loss, Period Increase (Decrease)	1	0	1	2
Private Debt Held-for-investment, Allowance for Credit Loss, Recovery	(1)	0	(2)	(1)
Private Debt Held-for-investment, Allowance for Credit Loss, Ending Balance	$ 3	$ 5	$ 3	$ 5

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- Definition

Private Debt, Held-for-investment, Allowance for Credit Loss

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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