Goodwill And Other Intangibles (Schedule Of Changes To Goodwill) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 29, 2014	Dec. 28, 2013
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ 76.3
Beginning balance	1,081.9	1,151.0
Goodwill, Acquired During Period	42.5	15.3
Asset Impairment Charges		76.3
Foreign Currency Translation Adjustments	1.0	8.1
Ending balance	1,123.4	1,081.9
Electrical Segment [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	64.2
Beginning balance	1,055.0	1,111.7
Goodwill, Acquired During Period	0	15.3
Asset Impairment Charges		64.2
Foreign Currency Translation Adjustments	1.1	7.8
Ending balance	1,096.4	1,055.0
Mechanical Segment [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	12.1
Beginning balance	26.9	39.3
Goodwill, Acquired During Period		0
Asset Impairment Charges		12.1
Foreign Currency Translation Adjustments	0.1	0.3
Ending balance	$ 27.0	$ 26.9