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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, 2019
USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Balance, December 31, 2018 $ 14
Purchases, additions and issuances 6
Settlements (1)
Total gains/losses included in earnings - realized/unrealized 6
Balance, June 30, 2019 $ 13