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DEBT - SMBC Funding Facility Narrative (Details) $ in Millions |  | 3 Months Ended | 4 Months Ended | 11 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2024 USD ($) extensionOption | Mar. 31, 2024 USD ($) extensionOption | Mar. 31, 2024 USD ($) extensionOption | Apr. 27, 2023 | Mar. 31, 2024 USD ($) extensionOption | Dec. 31, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount of debt outstanding | $ 11,754 | $ 11,754 | $ 11,754 |  | $ 11,754 | $ 11,905
Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Percentage of unused portion of line of credit commitment |  |  | 0.50% |  |  |
Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Percentage of unused portion of line of credit commitment |  |  | 1.25% |  |  |
SMBC Funding Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit, borrowing capacity incremental increase limit | 1,000 | 1,000 | $ 1,000 |  | 1,000 |
SMBC Funding Facility | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Percentage of unused portion of line of credit commitment |  |  | 0.50% |  |  |
SMBC Funding Facility | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Percentage of unused portion of line of credit commitment |  |  | 1.00% |  |  |
SMBC Funding Facility | Line of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total Aggregate Principal Amount Committed/ Outstanding | $ 800 | $ 800 | $ 800 |  | $ 800 |
Number of debt maturity extensions | extensionOption | 2 | 2 | 2 |  | 2 |
Term of debt maturity extension option |  |  | 1 year |  |  |
Principal amount of debt outstanding | $ 176 | $ 176 | $ 176 |  | $ 176 | $ 401
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread | 2.50% | 2.50% |  |  |  |
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  |  | 1.75% |
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  |  | 2.00% |
SMBC Funding Facility | Line of Credit | Secured Overnight Financing Rate (SOFR), Credit Spread Adjustment |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  |  | 0.10% |
SMBC Funding Facility | Line of Credit | Base Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  | 1.50% |  |  |  |
SMBC Funding Facility | Line of Credit | Base Rate | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  | 0.75% | 0.75% |
SMBC Funding Facility | Line of Credit | Base Rate | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  | 1.00% | 1.00% |
SMBC Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  | 1.75% |  |
SMBC Funding Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate spread |  |  |  | 2.00% |  |

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