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Secured Debt Arrangements, Net - Weighted Average Maturities and Interest Rates of Borrowings (Parenthetical) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Percentage of secured debt that is recourse debt	45.00%	46.00%
Line of Credit
Debt Instrument [Line Items]
Maximum amount of borrowings	$ 6,660,936	$ 6,936,201
Line of Credit | Credit Suisse Facility
Debt Instrument [Line Items]
Debt interest rate cap	2 years	6 months
Debt instrument, extension term	1 year
Line of Credit | Deutsche Bank Repurchase Facility
Debt Instrument [Line Items]
Maximum amount of borrowings	$ 200,000	$ 700,000
Line of Credit | Weighted Average
Debt Instrument [Line Items]
Weighted average advance rate	68.64%	68.60%
Fx contracts - GBP | Line of Credit
Debt Instrument [Line Items]
Currency conversion rate	1.29	1.25
Fx contracts - GBP | Line of Credit | Weighted Average
Debt Instrument [Line Items]
Weighted average rate	2.40%	2.43%
Weighted average advance rate	72.70%	75.30%
Fx contracts - EUR | Line of Credit
Debt Instrument [Line Items]
Currency conversion rate	1.08	1.04
Fx contracts - EUR | Line of Credit | Weighted Average
Debt Instrument [Line Items]
Weighted average rate	2.11%	2.11%
Weighted average advance rate	70.70%	70.80%
SEK | Line of Credit
Debt Instrument [Line Items]
Currency conversion rate	0.1	0.09
SEK | Line of Credit | Weighted Average
Debt Instrument [Line Items]
Weighted average rate	1.50%	1.50%
Weighted average advance rate	80.20%	80.20%
USD | Line of Credit
Debt Instrument [Line Items]
Maximum amount of borrowings	$ 160,000	$ 160,000
USD | Line of Credit | JP Morgan Facility
Debt Instrument [Line Items]
Maximum amount of borrowings	2,000,000	1,500,000
USD | Line of Credit | Credit Suisse Facility
Debt Instrument [Line Items]
Maximum amount of borrowings	800,000	800,000
USD | Line of Credit | Deutsche Bank Repurchase Facility
Debt Instrument [Line Items]
Maximum amount of borrowings	$ 200,000	$ 700,000
USD | Line of Credit | Weighted Average
Debt Instrument [Line Items]
Weighted average rate	2.41%	2.47%
Weighted average advance rate	64.60%	62.20%

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