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Derivative Financial Instruments - Additional Information (Details) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 derivative
Other Assets |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative asset, gross |  | $ 3,500,000 | $ 2,200,000 |
Other Liabilities |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative liability, gross |  | 4,200,000 | 1,000,000.0 |
Forward contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Cash collateral held from counterparty |  |  | 8,700,000 |
Cash collateral held at counterparty |  |  | 0 |
Foreign contracts and collar contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Proceeds from contract termination | $ 24,900,000 |  |  |
Foreign contracts and collar contracts | Other Assets |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative asset, net |  |  | $ 5,700,000 |
Interest rate swap |  |  |  |
Derivative [Line Items] |  |  |  |
Cash collateral held from counterparty |  | 0 |  |
Cash collateral held at counterparty |  | $ 2,200,000 |  |
Net Investment Hedging | Forward contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, number of contracts | derivative |  |  |  | 2
Net Investment Hedging | Collar contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, number of contracts | derivative |  |  |  | 2
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swap |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, notional amount | $ 250,000,000.0 |  |  |
Fixed interest rate | 0.5135% |  |  |

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