RESTRUCTURING CHARGES - Restructuring Reserve (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 job_position
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	$ 11.8
(Income) Expense, Net	1.8
Foreign Currency Translation	0.0
Cash utilized, net	(3.7)
Non-cash utilized, net	(0.1)
Balance End of Year	9.8	$ 11.8
Efficiency Program [Member]
Restructuring Reserve [Roll Forward]
Cash utilized, net	(1.6)	(2.8)
Efficiency Program [Member] | Employee Severance and Other Personnel Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	6.6
(Income) Expense, Net	0.6
Foreign Currency Translation	0.0
Cash utilized, net	(1.2)
Non-cash utilized, net	0.0
Balance End of Year	6.0	6.6
Efficiency Program [Member] | Other [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	0.1
(Income) Expense, Net	0.6
Foreign Currency Translation	0.0
Cash utilized, net	(0.4)
Non-cash utilized, net	(0.1)
Balance End of Year	0.2	0.1
Integration Program [Member] | Employee Severance and Other Personnel Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	0.8
(Income) Expense, Net	0.0
Foreign Currency Translation	0.0
Cash utilized, net	(0.8)
Non-cash utilized, net	0.0
Balance End of Year	0.0	0.8
Integration Program [Member] | Other [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	0.1
(Income) Expense, Net	0.0
Foreign Currency Translation	0.0
Cash utilized, net	0.0
Non-cash utilized, net	0.0
Balance End of Year	0.1	0.1
December 2013 Program [Member]
Restructuring Reserve [Roll Forward]
Number of positions eliminated | job_position			1,100
December 2013 Program [Member] | Employee Severance and Other Personnel Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	1.2
(Income) Expense, Net	0.0
Foreign Currency Translation	0.0
Cash utilized, net	0.0
Non-cash utilized, net	0.0
Balance End of Year	1.2	1.2
December 2013 Program [Member] | Other [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	0.0
(Income) Expense, Net	0.0
Foreign Currency Translation	0.0
Cash utilized, net	0.0
Non-cash utilized, net	0.0
Balance End of Year	0.0	0.0
Other Immaterial Actions [Member] | Employee Severance and Other Personnel Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	2.3
(Income) Expense, Net	0.3
Foreign Currency Translation	0.0
Cash utilized, net	(1.0)
Non-cash utilized, net	0.0
Balance End of Year	1.6	2.3
Other Immaterial Actions [Member] | Other [Member]
Restructuring Reserve [Roll Forward]
Balance Beginning of Year	0.7
(Income) Expense, Net	0.3
Foreign Currency Translation	0.0
Cash utilized, net	(0.3)
Non-cash utilized, net	0.0
Balance End of Year	$ 0.7	$ 0.7