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BUSINESS COMBINATIONS - HydroChemPSC (Details) - HydroChemPSC |  | 3 Months Ended
--- | --- | ---
Oct. 08, 2021 USD ($) employee service_location | Dec. 31, 2021 USD ($)
Business Acquisition [Line Items] |  |
Annual revenues reported by acquired entity in 2020 | $ 715,300,000 |
Purchase price | 1,230,000,000 |
Integration related costs |  | $ 6,000,000
Other intangibles | 289,000,000 |
Revenue of acquiree since acquisition date, actual |  | 166,100,000
Operation expenses of acquiree since acquisition date, actual |  | 166,400,000
Depreciation and amortization |  | $ 12,300,000
Customer Relationships |  |
Business Acquisition [Line Items] |  |
Finite-lived intangible assets acquired | $ 215,000,000 |
Finite-lived intangible asset, useful life (in years) | 25 years |
Developed Technology |  |
Business Acquisition [Line Items] |  |
Finite-lived intangible assets acquired | $ 65,000,000 |
Finite-lived intangible asset, useful life (in years) | 10 years |
Trademarks and Trade Names |  |
Business Acquisition [Line Items] |  |
Finite-lived intangible assets acquired | $ 9,000,000 |
Finite-lived intangible asset, useful life (in years) | 2 years |
Secured senior term loans due October 8, 2028 ("2028 Term Loans") | Secured debt |  |
Business Acquisition [Line Items] |  |
Aggregate principal amount | $ 1,000,000,000 |
HydroChemPSC |  |
Business Acquisition [Line Items] |  |
Entity number of employees | employee | 4,500 |
Number of service locations (more than) | service_location | 240 |

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