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DISPOSITION AND HELD FOR SALE (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Jul. 01, 2015 | Dec. 31, 2014
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investment in equity method investee |  |  | $ (37) | $ 0 |  |
Equity method investments | $ 478 |  | 478 |  |  | $ 46
Recognized a pre-tax gain | 334 | $ 0 | 334 | 0 |  |
Deferred tax liability |  |  | 138 | $ (21) |  |
Goodwill reclassified to non-current assets held for sale | 113 |  |  |  |  |
Q² Solutions [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investment in equity method investee |  |  | (37) |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  | 40.00% |
Equity method investments | 422 |  | 422 |  |  |
Excess of equity in underlying net assets | $ 219 |  | $ 219 |  |  |
Q² Solutions [Member] | Equity Method Investment, Basis Difference [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Amount allocated to finite-lived intangible assets |  |  |  |  | $ 75 |
Amortization period | 8 years |  |  |  |  |
Clinical Trials [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Recognized a pre-tax gain | $ 334 |  |  |  |  |
Deferred tax liability | $ 145 |  |  |  |  |

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