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INVESTMENTS - Nonaccrual Loans (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | $ 13,133 | $ 13,688
Total, nonaccrual status |  | 620 |
Total, 90 days or more past due and still accruing |  | 0 |
Transitional real estate loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 6,550 |
Total, nonaccrual status |  | 545 |
Commercial mortgage loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 1,734 |
Total, nonaccrual status |  | 0 |
Middle market loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 4,849 |
Total, nonaccrual status |  | 75 |
Current |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 12,513 |
Current | Transitional real estate loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 6,005 |
Current | Commercial mortgage loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 1,734 |
Current | Middle market loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 4,774 |
Less Than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 54 |
Less Than 90 Days Past Due | Transitional real estate loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 54 |
Less Than 90 Days Past Due | Commercial mortgage loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 0 |
Less Than 90 Days Past Due | Middle market loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 0 |
90 Days or More Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total | [1] | 566 |
90 Days or More Past Due | Transitional real estate loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total | [1] | 491 |
90 Days or More Past Due | Commercial mortgage loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total | [1] | 0 |
90 Days or More Past Due | Middle market loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total | [1] | 75 |
Financial Asset, Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 620 |
Financial Asset, Past Due | Transitional real estate loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 545 |
Financial Asset, Past Due | Commercial mortgage loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | 0 |
Financial Asset, Past Due | Middle market loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total |  | $ 75 |
[1] | As of September 30, 2023, there were no loans that were 90 days or more past due that continued to accrue interest

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