SEGMENT INFORMATION - SEGMENT ADJUSTED OPERATING INCOME (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reconciling items expense (income):
Segment adjusted operating income	$ 81,700,000	$ 109,500,000	$ (147,400,000)	$ 224,300,000
Goodwill impairment	0	0	156,600,000	0
Interest expense	14,500,000	6,600,000	33,500,000	23,000,000.0
Interest income	(400,000)	(700,000)	(1,800,000)	(2,000,000.0)
Other expense (income), net	900,000	(2,900,000)	3,800,000	(4,600,000)
Amortization of intangible assets			142,600,000	142,900,000
Income (loss) before income taxes	66,700,000	106,500,000	(182,900,000)	207,900,000
Technologies & Equipment
Reconciling items expense (income):
Goodwill impairment			156,600,000
Consumables
Reconciling items expense (income):
Goodwill impairment			0
Operating Segments
Reconciling items expense (income):
Segment adjusted operating income	208,700,000	218,500,000	360,000,000.0	613,800,000
Operating Segments | Technologies & Equipment
Reconciling items expense (income):
Segment adjusted operating income	109,600,000	104,700,000	216,900,000	272,500,000
Operating Segments | Consumables
Reconciling items expense (income):
Segment adjusted operating income	99,100,000	113,800,000	143,100,000	341,300,000
All Other
Reconciling items expense (income):
All Other	57,900,000	54,700,000	141,100,000	173,300,000
Segment Reconciling Items
Reconciling items expense (income):
Goodwill impairment	0	0	156,600,000	0
Restructuring and other costs	18,700,000	5,200,000	62,500,000	68,100,000
Interest expense	14,500,000	6,600,000	33,500,000	23,000,000.0
Interest income	(400,000)	(700,000)	(1,800,000)	(2,000,000.0)
Other expense (income), net	900,000	(2,900,000)	3,800,000	(4,600,000)
Amortization of intangible assets	48,800,000	47,400,000	142,600,000	142,900,000
Depreciation resulting from the fair value step-up of property, plant, and equipment from business combinations	$ 1,600,000	$ 1,700,000	$ 4,600,000	$ 5,200,000