Business Segments (Schedule Of Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Jan. 02, 2016
Segment Reporting Information [Line Items]
Total sales	$ 809.6	$ 882.3	$ 2,466.4	$ 2,736.2
Gross profit	231.7	241.1	672.0	713.4
Operating expenses	141.9	141.0	421.5	446.5
Income From Operations	89.8	100.1	250.5	266.9
Depreciation and amortization	37.6	42.0	116.6	120.1
Capital expenditures	14.4	20.7	46.1	65.4
Identifiable assets	4,477.1	4,878.4	4,477.1	4,878.4	$ 4,591.7
Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	389.4	426.8	1,161.7	1,324.2
Climate Solutions
Segment Reporting Information [Line Items]
Total sales	250.5	264.4	744.8	830.9
Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	169.7	191.1	559.9	581.1
Operating Segments | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	400.2	441.2	1,195.2	1,384.9
Gross profit	105.4	110.3	295.2	336.8
Operating expenses	69.2	71.6	212.2	223.2
Income From Operations	36.2	38.8	83.0	113.6
Depreciation and amortization	17.7	19.6	56.6	58.4
Capital expenditures	9.6	10.4	26.5	38.5
Identifiable assets	1,920.2	2,380.2	1,920.2	2,380.2
Operating Segments | Climate Solutions
Segment Reporting Information [Line Items]
Total sales	256.2	270.4	762.7	849.8
Gross profit	71.4	70.8	192.3	207.5
Operating expenses	29.2	30.1	89.4	89.7
Income From Operations	42.2	40.7	102.9	117.8
Depreciation and amortization	4.9	7.1	17.6	21.7
Capital expenditures	2.6	4.6	10.1	13.3
Identifiable assets	924.4	888.2	924.4	888.2
Operating Segments | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	170.8	191.9	563.0	584.2
Gross profit	54.9	60.0	184.5	169.1
Operating expenses	43.5	39.3	119.9	133.6
Income From Operations	11.4	20.6	64.6	35.5
Depreciation and amortization	15.0	15.3	42.4	40.0
Capital expenditures	2.2	5.7	9.5	13.6
Identifiable assets	1,632.5	1,610.0	1,632.5	1,610.0
Intersegment sales | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total sales	10.8	14.4	33.5	60.7
Intersegment sales | Climate Solutions
Segment Reporting Information [Line Items]
Total sales	5.7	6.0	17.9	18.9
Intersegment sales | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total sales	1.1	0.8	3.1	3.1
Eliminations
Segment Reporting Information [Line Items]
Total sales	(17.6)	(21.2)	(54.5)	(82.7)
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