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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($)
$ in Millions
Apr. 16, 2014
Jun. 30, 2017
Dec. 31, 2016
Fair Value Disclosures [Abstract]      
Fair value of debt   $ 4,000 $ 3,900
Steward Health Care Systems, LLC [Member]      
Business Acquisition [Line Items]      
Contingent consideration, liability $ 4    
Discount rate 2.80%    
Contingent consideration value high   $ 1  
Steward Health Care Systems, LLC [Member] | Minimum [Member]      
Business Acquisition [Line Items]      
Fair value inputs, probability of occurrence 5.00%    
Steward Health Care Systems, LLC [Member] | Maximum [Member]      
Business Acquisition [Line Items]      
Fair value inputs, probability of occurrence 95.00%