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Investments - Schedule of Residential Mortgage Loan by State (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for expected credit loss	$ (70)	$ (66)	$ (42)
Loans, net	5,926	5,336
Residential mortgage
Loans	3,274	2,852
Allowance for expected credit loss	$ (53)	$ (54)	$ (32)
% of Total	100.00%	100.00%
Loans, net	$ 3,221	$ 2,798
Florida | Residential mortgage
Loans	$ 164	$ 163
% of Total	5.00%	6.00%
New York | Residential mortgage
Loans		$ 129
% of Total		5.00%
Texas | Residential mortgage
Loans		$ 129
% of Total		5.00%
All other states | Residential mortgage
Loans	$ 3,110	$ 2,431
% of Total	95.00%	84.00%

X

- Definition

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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