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Derivative Financial Instruments and Fair Value Measurements - Additional Information (Details) € in Millions, £ in Millions, $ in Millions |  |  | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 09, 2022 EUR (€) | Mar. 17, 2022 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2022 GBP (£) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 EUR (€) | Jun. 30, 2022 EUR (€) | Mar. 31, 2022 | Dec. 31, 2021 USD ($) | Sep. 30, 2019 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 55.4
Net cash inflow |  |  |  |  | $ (65.3) |  | $ (44.6) |  |  |  |  |
Forecasted IT contract payment | £ |  |  |  |  |  | £ 6.0 |  |  |  |  |  |
Forward agreement gain/loss |  |  |  |  | 2.0 |  |  |  |  |  |  |
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 |  |  | $ 109.2 |  | $ 109.2 |  |  |  |  |  | $ 138.0 |
Cash flow hedge |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net cash inflow |  | $ 19.2 |  |  |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 1.7975% |  | 1.7975% |  |  | 1.7975% |  | 1.05973% |  |
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 |  |  | $ 826.8 |  | $ 826.8 |  |  |  |  |  | 1,064.0 |
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 |  |  | $ 875.0 |  | $ 875.0 |  |  |  |  |  | $ 1,019.6 |
Cross-currency swap |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Forward agreement gain/loss |  |  |  | $ 0.0 |  |  |  |  |  |  |  |
Cross-currency swap | Cash flow hedge |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount | € |  |  |  |  |  |  |  | € 202.3 |  |  |  |
Interest rate (as a percent) |  |  | 1.256% |  | 1.256% |  |  | 1.256% |  |  |  | 1.143%
Notes due June 2027 |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount | € |  |  |  |  |  |  |  |  | € 400.0 |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 3.50% |  |  |
Notes due September 2022 |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount | € |  |  |  |  |  |  |  |  | € 400.0 |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 1.875% |  |  |
Designated as hedging instrument | Cross-currency swap |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Forward agreement gain/loss |  |  | $ 8.8 |  | $ 16.1 |  | $ 0.0 |  |  |  |  |
Designated as hedging instrument | Notes due June 2027 | Euro-denominated notes |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  | 387.8 |  | 387.8 |  |  | € 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 |  |  | $ 487.2 |  | $ 487.2 |  |  | € 500.0 |  |  |  |

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