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FAIR VALUE MEASUREMENTS (Reconciliation of Beginning and Ending Balances of Assets and Liabilities Unobservable Inputs) (Details) - Significant Unobservable Inputs, Level 3 - Contingent Consideration
$ in Millions
6 Months Ended
Jun. 30, 2020
USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Balance, December 31, 2019 $ 7
Balance, June 30, 2020 $ 6