Financing Arrangements - Narrative (Details) $ / shares in Units, shares in Millions		3 Months Ended		6 Months Ended
	Jun. 01, 2021 USD ($)	Jun. 30, 2022 USD ($) shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Days shares	Jun. 30, 2021 USD ($)	Jul. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Dec. 20, 2021 shares
Debt Instrument [Line Items]
Settled with cash payment				$ 67,600,000	$ 38,900,000
Interest paid				1,900,000	3,100,000
Loss on extinguishment of debt		$ (26,000,000.0)	$ 0	(43,000,000.0)	$ 0
Common Stock, Shares outstanding | shares								50.0
Money market investment carrying value		$ 200,100,000		$ 200,100,000			$ 0
Stock Repurchased, Shares | shares		0.4		0.6
Stock Repurchased, Amount		$ 9,300,000		$ 12,700,000
Average Repurchase price		21.20		20.94
Stock Repurchase Program, Remaining Amount		37,300,000		37,300,000
Stock Repurchase Program, Amount		50,000,000.0		50,000,000.0		$ 50,000,000.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount		37,300,000		37,300,000
Common Shares
Debt Instrument [Line Items]
Stock Repurchase Program, Remaining Amount						$ 34,000,000.0
Shares repurchased | shares						0.2
Aggregate cost						$ 3,300,000
Average repurchase price | $ / shares						$ 17.72
Stock Repurchase Program, Remaining Authorized Repurchase Amount						$ 34,000,000.0
Third Amended Credit Facility
Debt Instrument [Line Items]
Outstanding borrowings		0		0
Third Amended Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, tentative future commitment increase		320,200,000		$ 320,200,000
Convertible Senior Notes due 2021
Debt Instrument [Line Items]
Terms of conversion				The Convertible Senior Notes due 2021 were settled on June 1, 2021 with cash payment of $38.9 million and issuance of shares of 0.1 million, as most noteholders exercised the conversion option prior to the date of maturity.
Settled with cash payment	$ 38,900,000
Settlement through issuance of shares | shares				0.1
Final cash payment of interest made to noteholders				$ 1,200,000
Debt Instrument, Face Amount		46,000,000.0		46,000,000.0
Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Outstanding borrowings		0		0
Principal amount		20,800,000		20,800,000			46,000,000.0
Transaction costs, debt gross		1,500,000		$ 1,500,000
Terms of conversion				The Convertible Senior Notes due 2025 are convertible at the option of holders in certain circumstances and during certain periods into the Company’s common shares, cash, or a combination thereof, at the Company’s election.
Settled with cash payment				$ 67,600,000
Debt instrument, threshold trading days | Days				20
Debt Instrument, , threshold consecutive trading days | Days				30
Debt Instrument, threshold Percentage of stock price conversion				130.00%
Fair value of convertible notes		54,700,000		$ 54,700,000			$ 107,000,000.0
Loss on extinguishment of debt		26,000,000.0		43,000,000.0
Unamortized debt issuance costs		400,000		600,000
Convertible Senior Notes due 2025 | Convertible Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 25,200,000		$ 25,200,000