Derivatives, Hedging Programs and Other Financial Instruments - Schedule of Total Amounts of Derivative Assets and Liabilities on Balance Sheets (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative asset	$ 10.9	$ 4.0
Derivative liability	(6.6)	(11.2)
Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Derivative asset	8.4	2.1
Other Assets
Derivative [Line Items]
Derivative asset	2.5	1.9
Other Accrued Liabilities
Derivative [Line Items]
Derivative liability	(3.8)	(7.6)
Long-term Liabilities
Derivative [Line Items]
Derivative liability	$ (2.8)	$ (3.6)