Segment Reporting Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting
Net sales	$ 2,883.2	$ 947.6	$ 8,423.2	$ 2,591.0
Maximum percentage of sales accounted for by a single customer (as a percent)			10.00%
UNITED STATES
Segment Reporting
Net sales	1,892.2	0.0	$ 5,781.0	0.0
Canada [Member]
Segment Reporting
Net sales	406.4	402.2	1,105.1	1,096.1
Europe [Member]
Segment Reporting
Net sales	561.2	512.6	1,467.5	1,393.4
International [Member]
Segment Reporting
Net sales	65.7	33.4	192.6	103.6
Corporate [Member]
Segment Reporting
Net sales	0.3	0.2	0.9	0.8
Intersegment sales elimination
Segment Reporting
Net sales	$ (42.6)	$ (0.8)	$ (123.9)	$ (2.9)