SELECTED QUARTERLY FINANCIAL DATA - Summary of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Dec. 28, 2018	[1]	Sep. 28, 2018	[2]	Jun. 29, 2018	[3]	Mar. 30, 2018	[4]	Dec. 29, 2017	[5]	Sep. 29, 2017	[6]	Jun. 30, 2017	[7]	Mar. 31, 2017	[8]	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Quarterly Operating Results Unaudited [Line Items]
Net sales	$ 2,119.1		$ 2,179.0		$ 2,137.9		$ 1,964.2		$ 2,013.8		$ 2,016.4		$ 2,001.4		$ 1,895.8		$ 8,400.2	$ 7,927.4	$ 7,622.8
Cost of goods sold	1,689.1		1,754.9		1,718.8		1,579.4		1,615.4		1,619.2		1,605.7		1,516.1		6,742.2	6,356.4	6,074.8
Operating income	87.3		89.5		71.3		61.6		80.6		80.8		82.6		68.9		309.7	312.9	295.5
Income before income taxes	59.9		68.6		49.0		45.7		61.5		62.4		63.8		49.9		223.2	237.6	197.5
Net income	$ 41.8		$ 47.6		$ 34.8		$ 32.1		$ 0.4		$ 37.6		$ 40.1		$ 30.9		$ 156.3	$ 109.0	$ 120.5
Basic:
Net income	$ 1.23		$ 1.41		$ 1.03		$ 0.95		$ 0.01		$ 1.12		$ 1.19		$ 0.92		$ 4.62	$ 3.24	$ 3.61
Diluted:
Net income	$ 1.22		$ 1.40		$ 1.02		$ 0.94		$ 0.01		$ 1.11		$ 1.18		$ 0.91		$ 4.58	$ 3.21	$ 3.59

[1] In the fourth quarter of 2018, "Operating income" includes $8.7 million of intangible asset amortization and $0.2 million of U.K. facility relocation costs. "Income before income taxes" includes a $4.6 million loss on extinguishment of debt.

[2] In the third quarter of 2018, "Operating income" includes $9.6 million of intangible asset amortization, a restructuring charge of $0.2 million, $0.3 million of acquisition and integration costs and $0.2 million of U.K. facility relocation costs.

[3] In the second quarter of 2018, "Operating income" includes $9.7 million of intangible asset amortization, a restructuring charge of $9.2 million, $2.3 million of acquisition and integration costs, $2.6 million of CEO retirement agreement expense and $0.4 million of U.K. facility relocation costs.

[4] In the first quarter of 2018, "Operating income" includes $9.3 million of intangible asset amortization, $0.3 million of acquisition and integration costs and $0.2 million of U.K. facility relocation costs.

[5] In the fourth quarter of 2017, "Operating income" includes $9.0 million of intangible asset amortization, $1.5 million of acquisition and integration costs and an intangible asset impairment charge of $5.7 million.

[6] In the third quarter of 2017, "Operating income" includes $9.1 million of intangible asset amortization and $0.8 million of acquisition and integration costs.

[7] In the second quarter of 2017, "Operating income" includes $9.0 million of intangible asset amortization.

[8] In the first quarter of 2017, "Operating income" includes $9.0 million of intangible asset amortization.