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Derivative Financial Instruments - Additional Information (Details) $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 EUR (€) | Sep. 30, 2019 EUR (€) | Apr. 30, 2019 EUR (€) | Jun. 22, 2018 EUR (€)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Pre-tax derivative gains and losses included in AOCI to be reclassified into earnings over the next twelve months | $ | $ 1.0 |  |  |  |
Cross-currency swap | Cash flow hedge |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Long-term debt |  |  | € 55,400,000 | € 202,300,000 |
Fixed annual interest rate |  |  | 1.143% | 1.256% |
Notes due September 2022 |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Long-term debt |  | € 400,000,000.0 |  |  |
Fixed annual interest rate | 1.875% | 1.875% |  |  |
Notes Due June 2026 |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Long-term debt |  | € 500,000,000.0 |  |  | € 500,000,000.0
Fixed annual interest rate |  |  |  |  | 1.75%
Designated as hedging instrument | Notes due September 2022 | Euro-denominated notes |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Long-term debt | $ 487.8 | 400,000,000.0 |  |  |
Designated as hedging instrument | Notes Due June 2026 | Euro-denominated notes |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Long-term debt | $ 606.7 | € 500,000,000.0 |  |  |

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