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DERIVATIVE INSTRUMENTS - Summary of Characteristics of Interest Rate Swaps (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Interest rate swaps, at fair value |  |
Derivative [Line Items] |  |
Current Notional | $ 57,053,898 | $ 66,053,571
Weighted Average Pay Rate | 3.14% | 3.11%
Weighted Average Receive Rate | 4.47% | 4.50%
Weighted Average Years to Maturity | 4 years 10 months 17 days | 4 years 4 months 9 days
Interest rate swaps, at fair value | Federal funds index swap |  |
Derivative [Line Items] |  |
Notional amount, percentage | 2.00% | 5.00%
Interest rate swaps, at fair value | Secured Overnight Financing Rate |  |
Derivative [Line Items] |  |
Notional amount, percentage | 98.00% | 95.00%
Interest rate swaps, at fair value | 0 - 3 years |  |
Derivative [Line Items] |  |
Minimum maturity period | 0 years | 0 years
Maximum maturity period | 3 years | 3 years
Current Notional | $ 23,100,137 | $ 30,411,229
Weighted Average Pay Rate | 3.60% | 3.49%
Weighted Average Receive Rate | 4.45% | 4.48%
Weighted Average Years to Maturity | 1 year 7 months 17 days | 1 year 1 month 20 days
Interest rate swaps, at fair value | 3 - 6 years |  |
Derivative [Line Items] |  |
Minimum maturity period | 3 years | 3 years
Maximum maturity period | 6 years | 6 years
Current Notional | $ 12,264,904 | $ 12,764,021
Weighted Average Pay Rate | 2.98% | 3.15%
Weighted Average Receive Rate | 4.45% | 4.50%
Weighted Average Years to Maturity | 4 years 7 months 6 days | 4 years 3 months 7 days
Interest rate swaps, at fair value | 6 - 10 years |  |
Derivative [Line Items] |  |
Minimum maturity period | 6 years | 6 years
Maximum maturity period | 10 years | 10 years
Current Notional | $ 19,739,427 | $ 21,318,937
Weighted Average Pay Rate | 2.75% | 2.55%
Weighted Average Receive Rate | 4.50% | 4.53%
Weighted Average Years to Maturity | 7 years 4 months 13 days | 7 years 7 months 17 days
Interest rate swaps, at fair value | Greater than 10 years |  |
Derivative [Line Items] |  |
Minimum maturity period | 10 years | 10 years
Current Notional | $ 1,949,430 | $ 1,559,384
Weighted Average Pay Rate | 3.39% | 3.40%
Weighted Average Receive Rate | 4.45% | 4.41%
Weighted Average Years to Maturity | 22 years 6 months 7 days | 23 years 3 months
Forward starting pay fixed swaps |  |
Derivative [Line Items] |  |
Current Notional | $ 1,600,000 | $ 0

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