Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ 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	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Examination [Line Items]
Net sales	$ 769.5	$ 832.4	$ 804.4	$ 721.0	$ 767.3	$ 880.0	$ 764.4	$ 739.5	$ 3,127.3	$ 3,151.2	$ 2,989.8
Gross profit	319.4	362.1	336.9	291.0	313.1	359.6	297.5	278.7	1,309.4	1,248.9	1,150.4
Operating income	107.5	131.1	100.2	76.7	91.8	110.9	52.0	54.4	415.5	309.1	276.3
Net income	$ 63.4	$ 77.8	$ 21.3	$ 39.6	$ (11.3)	$ 40.2	$ 21.2	$ 23.4	$ 202.1	$ 73.5	$ 108.9
Basic earnings (loss) per common share (in dollars per share)	$ 1.14	$ 1.34	$ 0.35	$ 0.64	$ (0.18)	$ 0.65	$ 0.35	$ 0.38	$ 3.43	$ 1.19	$ 1.79
Diluted earnings (loss) per common share (in dollars per share)	$ 1.12	$ 1.32	$ 0.35	$ 0.63	$ (0.18)	$ 0.64	$ 0.34	$ 0.38	$ 3.38	$ 1.17	$ 1.75
Loss on extinguishment of debt			$ 47.2						$ 47.2	$ 0.0	$ 0.0
Other nonrecurring income						$ 9.5
Danish Tax Authority
Income Tax Examination [Line Items]
Increase in uncertain tax liability					$ 60.7					$ 60.7