Business Segments (Schedule Of Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Sales	$ 813.5	$ 818.2
Gross Profit	215.6	217.4
Operating Expenses	140.8	148.1
Income From Operations	74.8	69.3
Depreciation and Amortization	34.4	40.1
Capital Expenditures	17.0	14.9
Identifiable Assets	4,444.4	4,600.2	$ 4,358.5
Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	381.2	377.6
Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	247.7	239.8
Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	184.6	200.8
Operating Segments | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	397.1	388.9
Gross Profit	95.6	93.6
Operating Expenses	69.8	71.9
Income From Operations	25.8	21.7
Depreciation and Amortization	15.2	19.7
Capital Expenditures	10.6	7.3
Identifiable Assets	1,907.3	1,949.7
Operating Segments | Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	255.9	245.0
Gross Profit	60.7	56.2
Operating Expenses	29.5	31.6
Income From Operations	31.2	24.6
Depreciation and Amortization	5.5	6.2
Capital Expenditures	4.3	3.9
Identifiable Assets	926.0	948.1
Operating Segments | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	185.3	201.7
Gross Profit	59.3	67.6
Operating Expenses	41.5	44.6
Income From Operations	17.8	23.0
Depreciation and Amortization	13.7	14.2
Capital Expenditures	2.1	3.7
Identifiable Assets	1,611.1	1,702.4
Intersegment sales | Commercial and Industrial Systems
Segment Reporting Information [Line Items]
Total Sales	15.9	11.3
Intersegment sales | Climate Solutions
Segment Reporting Information [Line Items]
Total Sales	8.2	5.2
Intersegment sales | Power Transmission Solutions
Segment Reporting Information [Line Items]
Total Sales	0.7	0.9
Eliminations
Segment Reporting Information [Line Items]
Total Sales	(24.8)	(17.4)
Gross Profit	0.0	0.0
Operating Expenses	0.0	0.0
Income From Operations	0.0	0.0
Depreciation and Amortization	0.0	0.0
Capital Expenditures	0.0	0.0
Identifiable Assets	$ 0.0	$ 0.0