INVESTMENTS - Amortized Cost of Loans by Credit Quality Indicator and Origination Year (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost Basis by Origination Year
Total	$ 20,350	$ 18,450
Residential mortgages:
Amortized Cost Basis by Origination Year
Current fiscal year	313	98
Fiscal year before current fiscal year	428	121
Two years before current fiscal year	186	74
Three years before current fiscal year	133	2
Four years before current fiscal year	4	1
Prior	2	2
Total	1,066	298
Residential mortgages: \| Performing
Amortized Cost Basis by Origination Year
Current fiscal year	313	98
Fiscal year before current fiscal year	428	121
Two years before current fiscal year	186	74
Three years before current fiscal year	133	2
Four years before current fiscal year	4	1
Prior	2	2
Total	1,066	298
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
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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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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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