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Derivatives and Hedging Activities - Narrative (Details) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) derivative | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) derivative | Jun. 30, 2015 EUR (€)
4.50% Senior Notes due September 2023 |  |  |  |
Derivative [Line Items] |  |  |  |
Debt interest rate | 4.50% |  |  |
Foreign currency forward and option contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Fair value of (liability) derivatives | $ (3.2) |  | $ 0.3 |
Foreign currency forward and option contracts | Derivatives not designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Maximum original maturity of foreign currency forward contracts | 12 months |  |  |
Foreign currency forward and option contracts | Designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Maximum original maturity of foreign currency forward contracts | 12 months |  |  |
Net unrealized gain related to cash flow hedging activities | $ 2.2 | $ 5.0 |  |
Estimate of net unrealized derivative losses included in AOCI to be reclassified into earnings in next twelve months | $ (0.8) |  |  |
Interest rate swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Number of derivative instruments outstanding | derivative | 0 |  | 0 |
EUR - Denominated debt | Net investment hedge | 4.50% Senior Notes due September 2023 |  |  |  |
Derivative [Line Items] |  |  |  |
Debt instrument face amount | € |  |  |  | € 400,000,000.0
Debt interest rate |  |  |  | 4.50%
EUR - Denominated debt | Designated as hedging instruments | Net investment hedge |  |  |  |
Derivative [Line Items] |  |  |  |
Fair value of (liability) derivatives | $ (18.8) |  |  |
Fair value of liability derivatives net after tax | $ (14.1) |  |  |

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