Derivative Instruments and Hedging Activities - Fair Values (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative instruments and hedging activities
Derivative assets	$ 5.0
Derivative liabilities		$ (6.5)
Other current assets
Derivative instruments and hedging activities
Derivative assets		2.1
Fair value of Assets.	(1.0)
Other current liabilities
Derivative instruments and hedging activities
Derivative liabilities	(19.0)
Interest rate and cross currency swap agreements | Other current assets
Derivative instruments and hedging activities
Derivative assets	9.3	10.1
Interest rate and cross currency swap agreements | Other long-term assets
Derivative instruments and hedging activities
Derivative assets	11.8
Interest rate and cross currency swap agreements | Other current liabilities
Derivative instruments and hedging activities
Derivative liabilities	(3.4)
Interest rate and cross currency swap agreements | Other long-term liabilities
Derivative instruments and hedging activities
Fair value of Assets.	(13.6)	(16.9)
Foreign exchange contracts
Derivative instruments and hedging activities
Derivative assets		1.7
Fair value of Assets.	(0.5)
Fixed price commodity contracts
Derivative instruments and hedging activities
Derivative liabilities	$ 0.9	$ 0.3