Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transactions [Abstract]
Net amount owed to our non-consolidated companies	$ 45.4	$ 21.7
Transactions with non-consolidated companies included in net sales	715.3	623.1	$ 1,065.5
Transactions with non-consolidated companies included in cost of goods sold	$ 750.2	$ 552.9	$ 805.9