Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended								12 Months Ended
	Mar. 04, 2016	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net sales		$ 365.9	$ 380.4	$ 371.1	$ 328.0	$ 378.7	$ 384.0	$ 368.4	$ 325.5	$ 1,445.4	$ 1,456.6	$ 1,570.1
Gross profit		132.8	143.9	137.2	123.0	138.5	142.0	134.7	117.6	$ 536.9	$ 532.8	$ 501.7
Net earnings		$ 65.8	$ 33.1	$ 30.1	$ 5.0	$ 21.4	$ 24.9	$ 15.1	$ 18.1
Earnings Per Share, Basic and Diluted [Abstract]
Earnings per share - Basic (in dollars per share)		$ 0.47	$ 0.24	$ 0.22	$ 0.04	$ 0.15	$ 0.18	$ 0.11	$ 0.13	$ 0.96	$ 0.58	$ 1.15
Earnings per share - Diluted (in dollars per share)		$ 0.47	$ 0.24	$ 0.21	$ 0.04	$ 0.15	$ 0.18	$ 0.11	$ 0.13	$ 0.95	$ 0.57	$ 1.15
Common Stock
Earnings Per Share, Basic and Diluted [Abstract]
Shares of common stock issued (in shares)	137.0