Derivative Instruments - Narrative (Details) - USD ($)		12 Months Ended
	Sep. 15, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 08, 2020
Derivative [Line Items]
Derivative, amount of hedged item					$ 100,000,000
Proceeds from long-term debt		$ 562,000,000.0	$ 662,800,000	$ 1,391,100,000
Amounts reclassified from accumulated other comprehensive (loss) income, before income tax		9,700,000	7,400,000
Derivative, notional amount		$ 173,200,000	295,700,000
Maximum length of time over which the Company hedges		18 months
2027 Notes
Derivative [Line Items]
Proceeds from long-term debt	$ 150,000,000.0
Net Investment Hedging
Derivative [Line Items]
Derivative, amount of hedged item	$ 54,500,000
Amounts reclassified from accumulated other comprehensive (loss) income, before income tax		$ 2,000,000.0
Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount		86,900,000	87,900,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount		$ 86,200,000	$ 207,800,000