BUSINESS SEGMENTS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Segment Reporting Information [Line Items]
Total Sales	$ 959.7	$ 869.2	$ 1,838.5	$ 1,682.7
Gross Profit	247.4	222.8	482.3	438.3
Operating Expenses	147.8	139.6	294.5	280.1
Income From Operations	99.6	83.2	187.8	158.2
Depreciation and Amortization	36.2	34.4	71.0	68.8
Capital Expenditures	21.2	16.7	40.5	33.7
Identifiable assets	4,634.7		4,634.7		$ 4,388.2
Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	469.0	407.4	883.0	788.6
Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	277.3	270.5	537.2	518.2
Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	213.4	191.3	418.3	375.9
Intersegment sales | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	12.5	19.9	27.6	35.8
Intersegment sales | Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	5.8	6.0	11.3	14.2
Intersegment sales | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	7.4	2.2	12.0	2.9
Operating Segments | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	481.5	427.3	910.6	824.4
Gross Profit	105.7	91.8	205.5	187.3
Operating Expenses	75.2	71.2	145.9	141.0
Income From Operations	30.5	20.6	59.6	46.3
Depreciation and Amortization	17.2	14.8	32.6	30.0
Capital Expenditures	8.9	11.1	19.9	21.7
Identifiable assets	2,085.1	1,854.1	2,085.1	1,854.1
Operating Segments | Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	283.1	276.5	548.5	532.4
Gross Profit	72.9	68.2	136.6	129.0
Operating Expenses	28.9	27.8	60.3	57.2
Income From Operations	44.0	40.4	76.3	71.8
Depreciation and Amortization	5.2	5.6	10.6	11.1
Capital Expenditures	7.9	2.3	12.4	6.6
Identifiable assets	927.1	909.9	927.1	909.9
Operating Segments | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	220.8	193.5	430.3	378.8
Gross Profit	68.8	62.8	140.2	122.0
Operating Expenses	43.7	40.6	88.3	81.9
Income From Operations	25.1	22.2	51.9	40.1
Depreciation and Amortization	13.8	14.0	27.8	27.7
Capital Expenditures	4.4	3.3	8.2	5.4
Identifiable assets	1,622.5	1,624.2	1,622.5	1,624.2
Eliminations
Segment Reporting Information [Line Items]
Total Sales	(25.7)	(28.1)	(50.9)	(52.9)
Gross Profit	0.0	0.0	0.0	0.0
Operating Expenses	0.0	0.0	0.0	0.0
Income From Operations	0.0	0.0	0.0	0.0
Depreciation and Amortization	0.0	0.0	0.0	0.0
Capital Expenditures	0.0	0.0	0.0	0.0
Identifiable assets	$ 4,634.7	$ 4,388.2	$ 4,634.7	$ 4,388.2