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v3.25.2

Bank credit lines, loan facilities and notes - Narrative (Details) - USD ($) $ in Millions |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 08, 2024 | Jun. 30, 2025 | Dec. 31, 2024 | May 02, 2023 | Jul. 01, 2021
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt at fair value |  | $ 3,480.4 | $ 3,469.2 |  |
The New Notes | Senior Secured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount | $ 2,000.0 |  |  |  |
Debt discount paid | 6.8 |  |  |  |
Senior Secured Notes (the "2027 Notes")* | Senior Secured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount | $ 750.0 |  |  |  |
Debt instrument, interest rate (in percent) | 5.809% | 5.809% | 5.809% |  |
Debt instrument, discount rate on underwriting (in percent) | 0.00250 |  |  |  |
Senior Secured Notes (the "2029 Notes")* | Senior Secured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount | $ 750.0 |  |  |  |
Debt instrument, interest rate (in percent) | 5.849% | 5.849% | 5.849% |  |
Debt instrument, discount rate on underwriting (in percent) | 0.00350 |  |  |  |
Senior Secured Notes (the "2034 Notes")* | Senior Secured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount | $ 500.0 |  |  |  |
Debt instrument, interest rate (in percent) | 6.00% | 6.00% | 6.00% |  |
Debt discount paid | $ 0.5 |  |  |  |
Debt instrument, discount rate on underwriting (in percent) | 0.00450 |  |  |  |
Debt instrument, redemption price, percentage of principal amount redeemed | 99.896% |  |  |  |
Senior Secured Term Loan | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.50% |  |  |
Senior Secured Term Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 2.00% |  |  |
Senior Secured Term Loan | Senior Secured Term Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount |  |  |  |  | $ 5,515.0
Debt instrument, interest rate (in percent) |  | 6.296% | 6.329% |  | 1.00%
Accelerated charge on repayments |  | $ 0.0 |  |  |
Senior Secured Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Variable rate component two | Standard & Poor's, BB Rating |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 1.45% |  |  |
Senior Secured Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Variable rate component two | Standard & Poor's, BB+ Rating |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 1.10% |  |  |
Senior Secured Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Variable rate component two | Standard & Poor's, BBB- Rating |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.85% |  |  |
Senior Secured Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Variable rate component two | Standard & Poor's, BBB Rating |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.65% |  |  |
Senior Secured Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Variable rate component two | Standard & Poor's, BBB+ Rating |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.50% |  |  |
Senior Secured Revolving Loan | Base rate | Variable rate component one |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.10% |  |  |
Senior Secured Revolving Loan | Base rate | Minimum | Variable rate component one |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.00% |  |  |
Senior Secured Revolving Loan | Base rate | Maximum | Variable rate component one |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.45% |  |  |
Senior Secured Revolving Loan | Senior Secured Revolving Loan | Senior Secured Revolving Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, maximum borrowing capacity |  |  |  | $ 500.0 | $ 300.0
Senior Secured Credit Facility And Senior Secured Notes | Senior Secured Term Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt discount paid |  |  |  |  | 27.6
Senior Secured Notes | Senior Secured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, principal amount |  |  |  |  | $ 500.0
Debt instrument, interest rate (in percent) |  |  |  |  | 2.875%

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