Business Segments (Schedule Of Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Segment Reporting Information [Line Items]
Total sales	$ 838.6	$ 942.2	$ 1,656.8	$ 1,853.9
Gross profit	222.9	251.4	440.3	472.3
Operating expenses	131.5	148.2	279.6	305.5
Income From Operations	91.4	103.2	160.7	166.8
Depreciation and amortization	38.9	42.2	79.0	78.1
Capital expenditures	16.8	23.5	31.7	44.7
Identifiable assets	4,540.6	4,965.0	4,540.6	4,965.0	$ 4,591.7
Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	394.7	441.0	772.3	897.4
Climate Solutions
Segment Reporting Information [Line Items]
Total sales	254.5	286.1	494.3	566.5
Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	189.4	215.1	390.2	390.0
Operating Segments | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	406.1	463.4	795.0	943.7
Gross profit	96.2	113.6	189.8	226.5
Operating expenses	71.1	72.1	143.0	151.7
Income From Operations	25.1	41.5	46.8	74.8
Depreciation and amortization	19.2	19.3	38.9	38.8
Capital expenditures	9.6	12.4	16.9	28.1
Identifiable assets	1,937.1	2,424.8	1,937.1	2,424.8
Operating Segments | Climate Solutions
Segment Reporting Information [Line Items]
Total sales	261.5	291.9	506.5	579.4
Gross profit	64.7	73.0	120.9	136.7
Operating expenses	28.6	29.3	60.2	59.6
Income From Operations	36.1	43.7	60.7	77.1
Depreciation and amortization	6.5	7.6	12.7	14.6
Capital expenditures	3.6	4.1	7.5	8.7
Identifiable assets	947.4	900.8	947.4	900.8
Operating Segments | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	190.5	216.3	392.2	392.3
Gross profit	62.0	64.8	129.6	109.1
Operating expenses	31.8	46.8	76.4	94.2
Income From Operations	30.2	18.0	53.2	14.9
Depreciation and amortization	13.2	15.3	27.4	24.7
Capital expenditures	3.6	7.0	7.3	7.9
Identifiable assets	1,656.1	1,639.4	1,656.1	1,639.4
Intersegment sales | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	11.4	22.4	22.7	46.3
Intersegment sales | Climate Solutions
Segment Reporting Information [Line Items]
Total sales	7.0	5.8	12.2	12.9
Intersegment sales | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	1.1	1.2	2.0	2.3
Eliminations
Segment Reporting Information [Line Items]
Total sales	(19.5)	(29.4)	(36.9)	(61.5)
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	$ 0.0	$ 0.0	$ 0.0	$ 0.0