SEGMENT INFORMATION - Information about Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Net Sales
Net sales	$ 759.3	$ 616.8	$ 1,456.6	$ 1,207.1
Segment Pre-tax Income
Pre-tax income	169.0	142.2	352.3	304.7
Unallocated amounts:
Intellectual property litigation expenses	(9.1)	(1.0)	(21.3)	(1.3)
Interest expense, net	(2.4)	(1.8)	(4.8)	(4.2)
Consolidated pre-tax income	169.0	142.2	352.3	304.7
Operating segments
Segment Net Sales
Net sales	748.4	672.2	1,446.4	1,312.2
Segment Pre-tax Income
Pre-tax income	416.1	327.7	799.8	651.2
Unallocated amounts:
Consolidated pre-tax income	416.1	327.7	799.8	651.2
Reconciling items
Segment Net Sales
Net sales	10.9	(55.4)	10.2	(105.1)
Unallocated amounts:
Special charges (Note 3)	(34.5)	0.0	(34.5)	0.0
Intellectual property litigation expenses	(9.1)	(1.0)	(21.3)	(1.3)
Interest expense, net	(2.4)	(1.8)	(4.8)	(4.2)
Foreign currency	5.2	(3.9)	14.6	(5.4)
Corporate items
Unallocated amounts:
Corporate items	(206.3)	(178.8)	(401.5)	(335.6)
United States | Operating segments
Segment Net Sales
Net sales	401.5	302.7	777.1	586.2
Segment Pre-tax Income
Pre-tax income	260.2	166.4	501.8	333.8
Unallocated amounts:
Consolidated pre-tax income	260.2	166.4	501.8	333.8
Europe | Operating segments
Segment Net Sales
Net sales	198.0	213.9	385.1	430.4
Segment Pre-tax Income
Pre-tax income	98.2	103.2	192.9	211.1
Unallocated amounts:
Consolidated pre-tax income	98.2	103.2	192.9	211.1
Japan | Operating segments
Segment Net Sales
Net sales	71.9	75.2	135.7	143.9
Segment Pre-tax Income
Pre-tax income	38.6	36.6	68.1	68.0
Unallocated amounts:
Consolidated pre-tax income	38.6	36.6	68.1	68.0
Rest of World | Operating segments
Segment Net Sales
Net sales	77.0	80.4	148.5	151.7
Segment Pre-tax Income
Pre-tax income	19.1	21.5	37.0	38.3
Unallocated amounts:
Consolidated pre-tax income	$ 19.1	$ 21.5	$ 37.0	$ 38.3