Borrowings - April 2026 UK Bonds (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Apr. 14, 2022 GBP (£)
Debt Instrument [Line Items]
Aggregate Principal Committed	$ 36,809,690	$ 35,719,459
April 2026 UK Bonds | Unsecured debt
Debt Instrument [Line Items]
Aggregate Principal Committed	$ 312,975	$ 318,663	£ 250,000,000.0
Interest rate			4.875%