INVESTMENTS - Amortized Cost of Loans by Credit Quality Indicator and Origination Year (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost Basis by Origination Year
Total	$ 18,450	$ 16,610
Residential mortgages:
Amortized Cost Basis by Origination Year
Current fiscal year	98
Fiscal year before current fiscal year	121
Two years before current fiscal year	74
Three years before current fiscal year	2
Four years before current fiscal year	1
Prior	2
Total	298	$ 0
Residential mortgages: \| Performing
Amortized Cost Basis by Origination Year
Current fiscal year	98
Fiscal year before current fiscal year	121
Two years before current fiscal year	74
Three years before current fiscal year	2
Four years before current fiscal year	1
Prior	2
Total	298
Residential mortgages: \| Nonperforming
Amortized Cost Basis by Origination Year
Current fiscal year	0
Fiscal year before current fiscal year	0
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Prior	0
Total	$ 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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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