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Debt and Credit Arrangements - Summary of Outstanding Borrowings (Details) € in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Nov. 06, 2017 USD ($)
Debt Instrument
Total debt, net of unamortized debt issuance costs	$ 874,300,000			$ 856,700,000
Less: current maturities	256,200,000			255,900,000
Long-term debt	618,100,000			600,800,000
Foreign currency transaction gain	(1,600,000)	$ 0
Convertible Notes, due 2024 \| Convertible Debt
Debt Instrument
Principal amount	258,800,000			258,800,000		$ 258,800,000
Unamortized debt issuance costs	(2,600,000)			(2,900,000)
Convertible Debt	256,200,000			255,900,000
Debt instrument stated interest rate (percent)						1.00%
Revolving Credit Facility \| Senior secured revolving credit facility due October 2026
Debt Instrument
Long term debt, gross	$ 618,100,000			$ 600,800,000
Debt instrument stated interest rate (percent)	2.40%		2.40%	2.10%	2.10%
Letters of credit outstanding	$ 42,500,000
Line of credit remaining borrowing amount	339,400,000
Revolving Credit Facility \| Euro senior secured revolving credit facility
Debt Instrument
Long term debt, gross	86,600,000		€ 78.0	$ 88,300,000	€ 78.0
Foreign currency transaction gain	$ (900,000)