RESTRUCTURING AND OTHER COSTS - RESTRUCTURING ACCRUALS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 9.3	$ 8.5
Provisions and adjustments	68.0	13.0
Amounts applied	(29.5)	(9.2)
Change in estimates	(6.6)	(3.0)
Ending Balance	41.2	9.3
Severances
Restructuring Reserve [Roll Forward]
Beginning Balance	6.0	7.0
Provisions and adjustments	59.8	8.2
Amounts applied	(24.1)	(7.3)
Change in estimates	(5.6)	(1.9)
Ending Balance	36.1	6.0
Severances | 2012 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.2	1.3
Provisions and adjustments		0.2
Amounts applied		(0.9)
Change in estimates		(0.4)
Ending Balance		0.2
Severances | 2013 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.8	5.7
Provisions and adjustments		0.4
Amounts applied		(4.3)
Change in estimates		(1.0)
Ending Balance		0.8
Severances | 2013 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	1.0
Provisions and adjustments	0.1
Amounts applied	(0.7)
Change in estimates	(0.1)
Ending Balance	0.3	1.0
Severances | 2014 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	5.0	0.0
Provisions and adjustments	0.7	7.6
Amounts applied	(4.1)	(2.1)
Change in estimates	(0.4)	(0.5)
Ending Balance	1.2	5.0
Severances | 2015 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Provisions and adjustments	59.0
Amounts applied	(19.3)
Change in estimates	(5.1)
Ending Balance	34.6	0.0
Lease/Contract Terminations
Restructuring Reserve [Roll Forward]
Beginning Balance	2.2	0.8
Provisions and adjustments	4.5	2.0
Amounts applied	(1.8)	(0.4)
Change in estimates	(0.7)	(0.2)
Ending Balance	4.2	2.2
Lease/Contract Terminations | 2012 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.5	0.7
Provisions and adjustments		0.0
Amounts applied		(0.1)
Change in estimates		(0.1)
Ending Balance		0.5
Lease/Contract Terminations | 2013 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0	0.1
Provisions and adjustments		0.2
Amounts applied		(0.2)
Change in estimates		(0.1)
Ending Balance		0.0
Lease/Contract Terminations | 2013 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.5
Provisions and adjustments	0.0
Amounts applied	(0.2)
Change in estimates	0.0
Ending Balance	0.3	0.5
Lease/Contract Terminations | 2014 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	1.7	0.0
Provisions and adjustments	(0.5)	1.8
Amounts applied	(0.7)	(0.1)
Change in estimates	0.0	0.0
Ending Balance	0.5	1.7
Lease/Contract Terminations | 2015 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Provisions and adjustments	5.0
Amounts applied	(0.9)
Change in estimates	(0.7)
Ending Balance	3.4	0.0
Other Restructuring Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	1.1	0.7
Provisions and adjustments	3.7	2.8
Amounts applied	(3.6)	(1.5)
Change in estimates	(0.3)	(0.9)
Ending Balance	0.9	1.1
Other Restructuring Costs | 2012 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0	0.1
Provisions and adjustments		0.0
Amounts applied		(0.1)
Change in estimates		0.0
Ending Balance		0.0
Other Restructuring Costs | 2013 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0	0.6
Provisions and adjustments		0.1
Amounts applied		(0.4)
Change in estimates		(0.3)
Ending Balance		0.0
Other Restructuring Costs | 2013 and Prior Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Provisions and adjustments	0.0
Amounts applied	0.0
Change in estimates	0.0
Ending Balance	0.0	0.0
Other Restructuring Costs | 2014 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	1.1	0.0
Provisions and adjustments	0.2	2.7
Amounts applied	(0.8)	(1.0)
Change in estimates	(0.2)	(0.6)
Ending Balance	0.3	1.1
Other Restructuring Costs | 2015 Plans
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0
Provisions and adjustments	3.5
Amounts applied	(2.8)
Change in estimates	(0.1)
Ending Balance	$ 0.6	$ 0.0