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Financial Instruments and Risk Management (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Sep. 27, 2019
Derivative [Line Items]
Realized loss on interest rate swap	$ 0.1	$ (0.1)
Amortization of unrealized (gain) loss to interest expense	(0.2)	0.0
Unrealized gain (loss)	0.1	$ (3.6)
Interest Rate Swap
Derivative [Line Items]
Derivative amount				$ 150.0
Unrealized gain on interest rate swap	(0.4)
Realized loss on interest rate swap	(0.2)
Amortization of unrealized (gain) loss to interest expense	0.2
Unrealized gain (loss)	2.3
Prepaid expenses and other current assets
Derivative [Line Items]
Cash deposits related to commodity derivative contracts	$ 0.9		$ 0.6

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