Quarterly Financial Information (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information (unaudited)
Net sales	$ 403.4	$ 383.9	$ 338.7	$ 382.6	$ 400.3	$ 394.7	$ 416.8	$ 388.7	$ 1,508.6	$ 1,600.5	$ 1,564.9
Gross profit	169.2	158.5	134.9	162.8	170.1	168.6	174.6	164.2	625.4	677.5	656.5
Net income	$ 29.2	$ 32.9	$ 20.2	$ 32.0	$ 31.8	$ 32.3	$ 36.4	$ 31.0	$ 114.3	$ 131.5	$ 128.0
Basic EPS
Net income (in dollars per share)	$ 0.86	$ 0.97	$ 0.60	$ 0.94	$ 0.94	$ 0.95	$ 1.06	$ 0.91	$ 3.37	$ 3.86	$ 3.73
Diluted EPS
Net income (in dollars per share)	0.86	0.97	0.59	0.94	0.93	0.94	1.06	0.91	3.36	3.85	3.73
Dividends declared per common share (in dollars per share)	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.21	$ 0.92	$ 0.90	$ 0.82