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DISCONTINUED OPERATIONS - Summarized Results of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended						12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net (loss) income including noncontrolling interest							$ 2,170.3	$ (133.3)	$ (174.4)
Net income (loss) from discontinued operations attributable to noncontrolling interest							2.2	0.0	(4.4)
Net (loss) income from discontinued operations, net of tax	$ (2,163.9)	$ (8.6)	$ 34.9	$ 28.3	$ 25.2	$ 44.9	(2,172.5)	133.3	178.8
ChampionX \| Discontinued Operations, Disposed of By Sale
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales							958.5	2,344.3	2,446.1
Cost of sales (including special charges)							702.1	1,677.6	1,750.6
Selling, general and administrative expenses							180.5	406.7	462.8
Special (gains) and charges							2,221.7	91.4	14.0
Operating (loss) income							(2,145.8)	168.6	218.7
Other (income) expense							0.3	0.7
Interest expense (income), net							0.2	0.5	1.2
(Loss) income before income taxes							(2,146.3)	167.4	217.5
Provision for income taxes							24.0	34.1	43.1
Net (loss) income including noncontrolling interest							(2,170.3)	133.3	174.4
Net income (loss) from discontinued operations attributable to noncontrolling interest							2.2		(4.4)
Net (loss) income from discontinued operations, net of tax							(2,172.5)	133.3	178.8
Special (gains) and charges, including non-controlling interest							2,221.7	91.4	18.8
ChampionX \| Discontinued Operations, Disposed of By Sale \| Product and sold equipment
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales							858.9	2,109.9	2,225.0
Cost of sales (including special charges)							621.7	1,488.9	1,567.9
ChampionX \| Discontinued Operations, Disposed of By Sale \| Service and lease equipment
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales							99.6	234.4	221.1
Cost of sales (including special charges)							$ 80.4	$ 188.7	$ 182.7