EQUITY AND STOCK-BASED COMPENSATION (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 31, 2012
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	$ (228.9)
Balance at end of period	(304.1)		(228.9)
Pension and postretirement liability adjustment and other, tax benefit	3.5	1.8
Net unrealized gain (loss) on qualifying cash flow hedges, tax benefit (provision)			2.5
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Components of Accumulated Other Comprehensive Loss
Pension and postretirement liability adjustment and other, tax benefit	5.0		3.8
Total
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	(228.9)
Other comprehensive income (loss) before reclassifications	(82.1)
Amounts reclassified from accumulated other comprehensive loss	6.9
Current-period other comprehensive income	(75.2)
Balance at end of period	(304.1)
Foreign Currency Translation Adjustment
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	298.1
Other comprehensive income (loss) before reclassifications	(87.2)
Current-period other comprehensive income	(87.2)
Balance at end of period	210.9
Net Unrealized Gains (Losses) on Qualifying Cash Flow Hedges
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	(3.3)
Other comprehensive income (loss) before reclassifications	3.6
Amounts reclassified from accumulated other comprehensive loss	0.4
Current-period other comprehensive income	4.0
Balance at end of period	0.7
Net Unrealized Losses on Available-for-Sale Securities
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	(3.1)
Other comprehensive income (loss) before reclassifications	(0.5)
Current-period other comprehensive income	(0.5)
Balance at end of period	(3.6)
Pension and Postretirement Liability Adjustment and Other
Components of Accumulated Other Comprehensive Loss
Balance at beginning of period	(520.6)
Other comprehensive income (loss) before reclassifications	2.0
Amounts reclassified from accumulated other comprehensive loss	6.5
Current-period other comprehensive income	8.5
Balance at end of period	(512.1)		(520.6)
Pension and postretirement liability adjustment and other, tax benefit	$ 315.0		$ 318.5