Acquisitions (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended		15 Months Ended				1 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 01, 2012	Sep. 29, 2012 Mexico Electrical Products Company [Member]	Sep. 29, 2012 Elco Group B.V. [Member]	Feb. 03, 2012 Milwaukee Gear Company [Member]	Aug. 22, 2011 Electrical Products Company Of A.O.Smith Corporation [Member]	Jun. 01, 2011 Australian Fan And Motor Company [Member]	Sep. 29, 2012 Ramu, Inc. [Member]	Apr. 05, 2011 Ramu, Inc. [Member]
Business Acquisition [Line Items]
Acquisition-related expenses		$ 16.0	$ 5.6
Cash included in purchase price				1.6		80.3	756.1
Business Acquisition, Purchase Price Allocation, Assets Acquired					1.4
Purchase price cash and non-cash consideration							140.9
Business acquisition consideration in shares	2,834,026						2,834,026
Acquisitions, purchase price								5.7		5.3
Business acquisition recorded liability									$ 13.7