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Investments - Schedule of Distribution of Residential Mortgage Loan Investment by State Concentrations (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Residential mortgage loans
Amortized Cost	$ 2,151	$ 1,606
% of Total	100.00%	100.00%
Total mortgage loans
Amortized Cost	$ 2,148	$ 1,575
Florida | Residential mortgage loans
Amortized Cost	$ 302	$ 231
% of Total	14.00%	15.00%
Texas | Residential mortgage loans
Amortized Cost	$ 227	$ 167
% of Total	11.00%	10.00%
New Jersey | Residential mortgage loans
Amortized Cost	$ 171	$ 150
% of Total	8.00%	10.00%
Pennsylvania | Residential mortgage loans
Amortized Cost	$ 146
% of Total	7.00%
California | Residential mortgage loans
Amortized Cost	$ 145
% of Total	7.00%
New York | Residential mortgage loans
Amortized Cost	$ 137
% of Total	6.00%
Georgia | Residential mortgage loans
Amortized Cost	$ 117
% of Total	5.00%
All Other States | Residential mortgage loans
Amortized Cost	$ 903	$ 1,027
% of Total	42.00%	65.00%

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
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
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- Definition

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/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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-Topic 326
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-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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