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BASIS OF PRESENTATION (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Shanghai Electric JV
Dec. 30, 2011
Shanghai Electric JV
Jun. 29, 2013
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Jun. 30, 2012
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Jun. 29, 2013
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Jun. 30, 2012
EGS Electrical Group, LLC and Subsidiaries ("EGS")
BASIS OF PRESENTATION                    
Length of quarter 91 days                  
Investment in joint venture under equity method investment                    
Percentage of interest held in joint venture         45.00% 45.00% 44.50%   44.50%  
Lag in including results in consolidated statements                 3 months  
Equity earnings from equity method investment $ 10.1 $ 6.9 $ 19.2 $ 16.4     $ 9.9 $ 7.2 $ 19.1 $ 16.5
Revenues             126.0 126.6 251.1 259.7
Gross profit             54.0 51.9 107.7 108.9
Income from continuing operations             22.1 16.1 42.8 37.0
Net income             $ 22.1 $ 16.1 $ 42.8 $ 37.0