SEGMENT INFORMATION - Reconciliations of Segment Net Sales to Consolidated Net Sales and Segment Pre-Tax Income to Consolidated Pre-Tax Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Sales Reconciliation
Net sales	$ 1,140.9	$ 1,094.0	$ 3,194.6	$ 3,173.9
Pre-tax Income Reconciliation
Consolidated operating income	357.8	294.3	546.2	836.0
Unallocated amounts:
Special charge (Note 4)	0.0	0.0	0.0	(24.0)
Change in fair value of contingent consideration liabilities, net	9.0	2.3	(8.4)	(12.4)
Consolidated pre-tax income	364.3	301.7	560.6	851.0
Operating segments
Net Sales Reconciliation
Net sales	1,128.6	1,089.6	3,189.9	3,159.2
Pre-tax Income Reconciliation
Consolidated operating income	682.8	666.3	1,935.3	1,914.1
Unallocated amounts:
Consolidated pre-tax income	682.8	666.3	1,935.3	1,914.1
Corporate items
Unallocated amounts:
Corporate items	(331.9)	(384.2)	(1,005.6)	(1,073.1)
Reconciling items
Net Sales Reconciliation
Net sales	12.3	4.4	4.7	14.7
Unallocated amounts:
Special charge (Note 4)	0.0	0.0	0.0	(24.0)
Intellectual property litigation expenses	(8.4)	(7.9)	(400.8)	(19.5)
Foreign currency	6.3	17.8	25.7	50.9
Non-operating income	$ 6.5	$ 7.4	$ 14.4	$ 15.0