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Derivative Financial Instruments and Fair Value Measurements - Additional Information (Details) € in Millions, $ in Millions |  |  |  | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 26, 2024 USD ($) | Apr. 18, 2024 USD ($) | Jun. 09, 2022 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 EUR (€) | Dec. 31, 2024 USD ($) | Sep. 26, 2024 EUR (€) | Jun. 09, 2022 EUR (€) | Mar. 31, 2022 EUR (€)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Net cash inflow |  |  |  | $ (34.0) | $ (21.6) |  |  |  |  |
Forward agreement gain/loss |  |  | $ 2.0 |  |  |  |  |  |  |
Non cash impairment charges goodwill |  |  |  | 445.1 |  |  | $ 486.1 |  |  |
Fair Value Measurements Nonrecurring Basis | Switzerland |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Non cash impairment charges goodwill |  |  |  | 188.1 |  |  |  |  |  |
Fair Value Measurements Nonrecurring Basis | United Kingdom |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Non cash impairment charges goodwill |  |  |  | 214.8 |  |  |  |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value measured on a recurring basis |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Deferred compensation plan assets |  |  |  | 178.3 |  |  | 165.4 |  |  |
Cash flow hedge |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount | € |  |  |  |  |  |  |  |  | € 400.0 |
Forward agreement notional amount | € |  |  |  |  |  |  |  |  | € 300.0 |
Forward agreement interest rate |  |  |  |  |  |  |  |  | 1.936% |
Derivatives Notes Repay | € |  |  |  |  |  |  |  |  | € 400.0 |
Forward agreement maturity date |  |  | Sep. 30, 2022 |  |  |  |  |  |  |
Fair Value Hedge |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount | € |  |  |  |  |  |  |  | € 63.6 |  | € 236.9
Net cash inflow | $ 1.6 | $ 14.9 |  |  |  |  |  |  |  |
Euro-denominated notes | Estimate of fair value measurement | Significant Other Observable Inputs (Level 2) |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Carrying value of long-term debt |  |  |  | 1,065.9 |  |  | 928.5 |  |  |
Euro-denominated notes | Carrying value | Significant Other Observable Inputs (Level 2) |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Carrying value of long-term debt |  |  |  | 1,058.1 |  |  | $ 928.4 |  |  |
Cross-currency swap | Fair Value Hedge |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  | 3.27% |  | 3.45%
Designated as hedging instrument | Notes due June 2027 | Euro-denominated notes |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  | 469.5 |  | € 400.0 |  |  |  |
Designated as hedging instrument | Notes Due June 2026 | Euro-denominated notes |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  | $ 588.6 |  | € 500.0 |  |  |  |

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