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Investments - Credit Quality of RMLs (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for expected credit loss	$ (70)	$ (66)	$ (42)
Loans, net	5,926	5,336
Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Gross Carrying Value	3,274	2,852
Allowance for expected credit loss	(53)	(54)	$ (32)
Loans, net	$ 3,221	$ 2,798
% of Total	100.00%	100.00%
Allowance for expected loan loss, % of Total	0.00%	0.00%
Total residential mortgage loans, % of Total	100.00%	100.00%
Residential mortgage | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Gross Carrying Value	$ 3,188	$ 2,795
% of Total	97.00%	98.00%
Residential mortgage | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Gross Carrying Value	$ 86	$ 57
% of Total	3.00%	2.00%

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Financing Receivable Allowance for Expected Credit Loss, Percent

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Percentage of allowance for credit loss to total financing receivable outstanding.

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