Borrowings - Revolving Credit Facility (Details) - Line of Credit € in Millions, £ in Millions, $ in Millions, $ in Millions	Aug. 06, 2024	Sep. 30, 2025 USD ($)	Sep. 30, 2025 EUR (€)	Sep. 30, 2025 CAD ($)	Sep. 30, 2025 GBP (£)	Sep. 30, 2025 AUD ($)	Aug. 04, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2024 AUD ($)	Jun. 09, 2023
Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 433,500,000
Letter of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							$ 175,000,000.0
Letter of Credit | CitiBank, Revolving Credit Facility, Revolving Commitments 2026
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							200,000,000.0
Letter of Credit | CitiBank, Revolving Credit Facility, Revolving Commitments 2027
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							$ 200,000,000.0
Unused capacity, commitment fee percentage	0.375%
Revolving Credit Facility
Debt Instrument [Line Items]
Asset coverage ratio													1.50
Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		2,425,000,000	€ 380.9	$ 30.7	£ 279.5	$ 1.0		$ 2,225,000,000	€ 277.7	$ 38.2	£ 266.3	$ 1.0
Unused capacity, commitment fee percentage	0.325%
Revolving Credit Facility | Scenario 1 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.525%
Combined revolving debt amount multiplier	2.0
Revolving Credit Facility | Scenario 1 | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 2 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.65%
Revolving Credit Facility | Scenario 2 | Revolving Credit Facility | High
Debt Instrument [Line Items]
Combined revolving debt amount multiplier	2.0
Revolving Credit Facility | Scenario 2 | Revolving Credit Facility | Low
Debt Instrument [Line Items]
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 2 | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 3 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.775%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 3 | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 4 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.525%
Combined revolving debt amount multiplier	2.0
Revolving Credit Facility | Scenario 4 | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	1.875%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 5 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.65%
Revolving Credit Facility | Scenario 5 | Revolving Credit Facility | High
Debt Instrument [Line Items]
Combined revolving debt amount multiplier	2.0
Revolving Credit Facility | Scenario 5 | Revolving Credit Facility | Low
Debt Instrument [Line Items]
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Scenario 6 | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.775%
Combined revolving debt amount multiplier	1.6
Revolving Credit Facility | Base Rate | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility | Base Rate | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility | SOFR | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility | SOFR | CitiBank, Revolving Credit Facility, Revolving Commitments
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Commitments | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,000,000,000.0