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Debt and Credit Arrangements - Summary of Outstanding Borrowings (Details) € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Nov. 06, 2017 USD ($)
Debt Instrument
Total debt, net of unamortized debt issuance costs	$ 922,800,000		$ 922,800,000			$ 856,700,000
Less: current maturities	256,400,000		256,400,000			255,900,000
Long-term debt	666,400,000		666,400,000			600,800,000
Foreign currency transaction gain	1,700,000	$ (900,000)	100,000	$ (900,000)
Convertible Notes, due 2024 | Convertible Debt
Debt Instrument
Principal amount	258,800,000		258,800,000			258,800,000		$ 258,800,000
Unamortized debt issuance costs	(2,400,000)		(2,400,000)			(2,900,000)
Convertible Debt	256,400,000		256,400,000			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	$ 666,400,000		$ 666,400,000			$ 600,800,000
Debt instrument stated interest rate (percent)	2.60%		2.60%		2.60%	2.10%	2.10%
Letters of credit outstanding	$ 61,400,000		$ 61,400,000
Line of credit remaining borrowing amount	272,200,000		272,200,000
Revolving Credit Facility | Euro senior secured revolving credit facility
Debt Instrument
Long term debt, gross	91,400,000		91,400,000		€ 88.0	$ 88,300,000	€ 78.0
Foreign currency transaction gain	$ 5,700,000	$ 8,900,000	$ 6,600,000	$ 5,000,000.0

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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