Business Segments Operating Earnings (Loss) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting [Abstract]
Net sales	$ 2,387.3	$ 2,372.7	$ 2,382.0	$ 2,295.2	$ 2,244.8	$ 2,269.9	$ 2,218.7	$ 1,772.3	$ 6,011.6	$ 9,437.2	$ 8,505.7
Intercompany revenue elimination									0.0	(0.8)	0.0
Nonoperating Income (Expense)									$ (83.7)	$ (206.9)	$ (270.8)