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BASIS OF PRESENTATION (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended				9 Months Ended
	Jan. 07, 2014	Sep. 27, 2014	Mar. 29, 2014	Sep. 28, 2013	Jun. 29, 2013	Sep. 27, 2014	Sep. 28, 2013	Jun. 29, 2013	Jan. 07, 2014
BASIS OF PRESENTATION
Length of second and third quarter						91 days
Investment in joint venture under equity method investment
Equity earnings in joint venture		$ 0.3		$ 11.4		$ 0.8	$ 30.6
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Investment in joint venture under equity method investment
Percentage of interest held in joint venture sold									44.50%
Cash proceeds from sale of interest in joint venture	574.1
Gain on sale of interest in joint venture			491.2
Lag period for accounting of equity method investment prior to sale	3 months
Equity earnings in joint venture		0		11.4		0	30.5
Revenues					129.1			380.2
Gross profit					57.0			164.7
Income from continuing operations					25.7			68.5
Net income					$ 25.7			$ 68.5

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