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Investments - Schedule of Residential Mortgage Loan by State (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for expected credit loss	$ (66)	$ (42)	$ (31)	$ (39)
Loans, net	5,336	4,554
Residential Mortgage
Loans	2,852	2,180
Allowance for expected credit loss	$ (54)	$ (32)	$ (25)	$ (37)
% of Total	100.00%	100.00%
Loans, net	$ 2,798	$ 2,148
Florida | Residential Mortgage
Loans	$ 163	$ 324
% of Total	6.00%	15.00%
Texas | Residential Mortgage
Loans	$ 129	$ 215
% of Total	5.00%	10.00%
New Jersey | Residential Mortgage
Loans	$ 129	$ 172
% of Total	5.00%	8.00%
Pennsylvania | Residential Mortgage
Loans		$ 153
% of Total		7.00%
California | Residential Mortgage
Loans		$ 139
% of Total		6.00%
New York | Residential Mortgage
Loans		$ 138
% of Total		6.00%
Georgia | Residential Mortgage
Loans		$ 125
% of Total		6.00%
All other states | Residential Mortgage
Loans	$ 2,431	$ 914
% of Total	85.00%	42.00%

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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- Definition

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

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-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

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