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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021 | Jul. 01, 2015
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair value of debt | $ 4,100 | $ 4,400 |
Fair Value, Inputs, Level 3 | Contingent Consideration |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | $ 33 | $ 5 |
UMass Joint Venture |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Ownership percentage by noncontrolling owners |  |  | 18.90%

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