BUSINESS OVERVIEW AND BASIS OF PRESENTATION - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Parent's equity, beginning of period			$ 5,179.5
Amounts reclassified from accumulated other comprehensive income (loss):
Total other comprehensive income (loss), net of income taxes	$ (24.7)	$ (14.2)	(11.1)	$ (92.1)
Parent's equity, end of period	2,556.0		2,556.0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Parent's equity, beginning of period	62.7	93.0	51.2	182.9
Increase (decrease)		(9.9)		(99.8)
Income tax impact		0.0		0.0
Other comprehensive income (loss) before reclassifications, net of income taxes	(25.7)	(9.9)	(14.2)	(99.8)
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	0.0	0.0	0.0	0.0
Income tax impact	0.0	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.0	0.0	0.0	0.0
Total other comprehensive income (loss), net of income taxes	(25.7)	(9.9)	(14.2)	(99.8)
Parent's equity, end of period	37.0	83.1	37.0	83.1
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Parent's equity, beginning of period	(63.5)	(71.4)	(65.6)	(83.4)
Increase (decrease)		(8.9)		5.2
Income tax impact		3.4		(1.3)
Other comprehensive income (loss) before reclassifications, net of income taxes	0.0	(5.5)	0.0	3.9
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	1.3	1.6	4.1	5.0
Income tax impact	(0.3)	(0.4)	(1.0)	(1.2)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	1.0	1.2	3.1	3.8
Total other comprehensive income (loss), net of income taxes	1.0	(4.3)	3.1	7.7
Parent's equity, end of period	(62.5)	(75.7)	(62.5)	(75.7)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Parent's equity, beginning of period	(0.8)	21.6	(14.4)	99.5
Increase (decrease)		(18.8)		(94.6)
Income tax impact		3.4		(1.3)
Other comprehensive income (loss) before reclassifications, net of income taxes	(25.7)	(15.4)	(14.2)	(95.9)
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	1.3	1.6	4.1	5.0
Income tax impact	(0.3)	(0.4)	(1.0)	(1.2)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	1.0	1.2	3.1	3.8
Total other comprehensive income (loss), net of income taxes	(24.7)	(14.2)	(11.1)	(92.1)
Parent's equity, end of period	$ (25.5)	$ 7.4	$ (25.5)	$ 7.4