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Secured Debt Arrangements, Net - Assets Under Barclays Private Securitization (Parenthetical) (Details) $ in Thousands, € in Millions, £ in Millions, kr in Billions	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2024 GBP (£)	Sep. 30, 2024 EUR (€)	Sep. 30, 2024 SEK (kr)	Dec. 31, 2023 GBP (£)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 SEK (kr)
Debt Instrument [Line Items]
Debt instrument, facility feature, period	1 year	1 year
Line of Credit
Debt Instrument [Line Items]
Borrowings outstanding	$ 5,513,945	$ 5,538,476
Barclays Securitization | Line of Credit
Debt Instrument [Line Items]
Borrowings outstanding	$ 2,034,897	$ 2,157,157	£ 963.7	€ 494.3	kr 2.0	£ 969.9	€ 655.8	kr 2.0

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