INVESTMENTS - Amortized Cost of Loans by Credit Quality Indicator and Origination Year (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Amortized Cost Basis by Origination Year
Total	$ 20,838	$ 20,350
Residential mortgages:
Amortized Cost Basis by Origination Year
Current fiscal year	437	313
Fiscal year before current fiscal year	414	428
Two years before current fiscal year	183	186
Three years before current fiscal year	129	133
Four years before current fiscal year	3	4
Prior	2	2
Total	1,168	1,066
Residential mortgages: \| Performing
Amortized Cost Basis by Origination Year
Current fiscal year	437	313
Fiscal year before current fiscal year	414	428
Two years before current fiscal year	183	186
Three years before current fiscal year	129	133
Four years before current fiscal year	3	4
Prior	2	2
Total	1,168	1,066
Residential mortgages: \| Nonperforming
Amortized Cost Basis by Origination Year
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
Total	$ 0	$ 0

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

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
-Topic 326
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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