Long-Term Obligations and Commitments - Other Long-Term Obligations (Details) - USD ($) $ in Millions	1 Months Ended
	Nov. 18, 2021	Oct. 31, 2021	Sep. 30, 2021	Jul. 31, 2021
Debt Instrument [Line Items]
Income tax liabilities		$ 24.0		$ 24.0
Dividend payable		9.0		8.0
Deferred revenue		6.0		8.0
Other		12.0		13.0
Total long-term obligations		51.0		53.0
Long-term obligations due after one year		$ 51.0		$ 53.0
Non-cancellable contractual commitments			$ 555.0
Purchase commitment, year one			1.5
Purchase commitment, year two			1.5
Purchase commitment, year three			1.5
Purchase commitment, thereafter			$ 27.5
Subsequent Event
Debt Instrument [Line Items]
Long-term purchase commitment, period	5 years
Long-term purchase commitment, amount	$ 1,200.0
Long-term purchase commitment, annual purchase commitment	$ 150.0