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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Millions | Sep. 30, 2017 | Dec. 31, 2016 | Apr. 16, 2014
--- | --- | --- | ---
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
Contingent consideration value high | $ 1 |  |

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