SEGMENT INFORMATION - SEGMENT ADJUSTED OPERATING INCOME (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 67.5	$ (1,154.1)	$ 114.8	$ (1,085.4)
Goodwill impairment	0.0	1,085.8	0.0	1,085.8
Restructuring and other costs	42.4	188.9	62.9	199.1
Interest expense	8.0	9.6	16.4	18.2
Interest income	(0.2)	(0.4)	(1.3)	(1.0)
Other expense (income), net	12.1	(1.0)	(1.7)	(35.1)
Amortization of intangible assets			95.5	100.1
Income (loss) before income taxes	47.6	(1,162.3)	101.4	(1,067.5)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	217.8	212.2	395.3	395.4
Operating Segments | Technologies & Equipment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	96.0	68.8	167.8	137.3
Operating Segments | Consumables
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	121.8	143.4	227.5	258.1
All Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
All Other	58.9	39.6	118.6	92.2
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Goodwill impairment	0.0	1,085.8	0.0	1,085.8
Restructuring and other costs	42.4	188.9	62.9	199.1
Interest expense	8.0	9.6	16.4	18.2
Interest income	(0.2)	(0.4)	(1.3)	(1.0)
Other expense (income), net	12.1	(1.0)	(1.7)	(35.1)
Amortization of intangible assets	47.3	50.2	95.5	100.1
Depreciation resulting from the fair value step-up of property, plant, and equipment, net from business combinations	$ 1.7	$ 1.8	$ 3.5	$ 3.6