SEGMENT INFORMATION - SEGMENT ADJUSTED OPERATING INCOME (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 109.5	$ 45.5	$ 224.3	$ (1,039.9)
Goodwill impairment	0.0	0.0	0.0	1,085.8
Restructuring and other costs	5.2	12.1	68.1	211.2
Interest expense	6.6	9.7	23.0	27.9
Interest income	(0.7)	(0.6)	(2.0)	(1.6)
Other expense (income), net	(2.9)	4.7	(4.6)	(30.4)
Amortization of intangible assets			142.9	149.7
Income (loss) before income taxes	106.5	31.7	207.9	(1,035.8)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	218.5	150.4	613.8	545.8
Operating Segments \| Technologies & Equipment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	104.7	48.1	272.5	185.4
Operating Segments \| Consumables
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	113.8	102.3	341.3	360.4
All Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
All Other	54.7	41.4	173.3	133.6
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Goodwill impairment	0.0	0.0	0.0	1,085.8
Restructuring and other costs	5.2	12.1	68.1	211.2
Interest expense	6.6	9.7	23.0	27.9
Interest income	(0.7)	(0.6)	(2.0)	(1.6)
Other expense (income), net	(2.9)	4.7	(4.6)	(30.4)
Amortization of intangible assets	47.4	49.6	142.9	149.7
Depreciation resulting from the fair value step-up of property, plant, and equipment from business combinations	$ 1.7	$ 1.8	$ 5.2	$ 5.4

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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