SEGMENT AND GEOGRAPHIC INFORMATION - INFORMATION ABOUT THE COMPANY'S OPERATINGS IN DIFFERENT GEOGRAPHIC AREAS (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 671.1	$ 648.9	$ 698.0	$ 656.3	$ 719.1	$ 708.2	$ 765.2	$ 730.1	$ 2,674.3	$ 2,922.6	$ 2,950.8
Property, plant and equipment, net	558.8				588.8				558.8	588.8	637.2
U. S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,027.4	1,015.9	1,011.6
Property, plant and equipment, net	178.5				170.8				178.5	170.8	158.7
GERMANY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									472.8	541.8	559.1
Property, plant and equipment, net	92.1				109.3				92.1	109.3	129.7
SWEDEN
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									42.3	48.9	57.5
Property, plant and equipment, net	92.3				103.9				92.3	103.9	134.1
Other Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,131.8	1,316.0	1,322.6
Property, plant and equipment, net	$ 195.9				$ 204.8				$ 195.9	$ 204.8	$ 214.7