INVESTMENTS - Commercial Mortgage Loans by Key Credit Quality Indicators (Details) $ in Millions	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 13,571	$ 13,688
Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	313
2020	46
2019	588
Prior	809
Total	$ 1,756
Weighted Average DSCR	2.42
Commercial mortgage loans \| 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	0.00
Commercial mortgage loans \| 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	0.00
Commercial mortgage loans \| 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	2.93
Commercial mortgage loans \| 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	1.98
Commercial mortgage loans \| 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	2.44
Commercial mortgage loans \| Prior
Financing Receivable, Credit Quality Indicator [Line Items]
Weighted Average DSCR	2.23
Commercial mortgage loans \| Loan to Value Ratio, 0.00% to 59.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 0
2022	0
2021	298
2020	46
2019	504
Prior	617
Total	$ 1,465
Weighted Average DSCR	2.53
Commercial mortgage loans \| Loan to Value Ratio, 60.00% to 69.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 0
2022	0
2021	15
2020	0
2019	45
Prior	124
Total	$ 184
Weighted Average DSCR	1.82
Commercial mortgage loans \| Loan to Value Ratio, 70.00% to 79.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 0
2022	0
2021	0
2020	0
2019	39
Prior	20
Total	$ 59
Weighted Average DSCR	1.18
Commercial mortgage loans \| Loan-to-Value Ratio, 80.00% or greater
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 0
2022	0
2021	0
2020	0
2019	0
Prior	48
Total	$ 48
Weighted Average DSCR	2.67

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