ASSETS AND LIABILITIES HELD FOR SALE - Net Assets Held For Sale (Details) - USD ($) $ in Millions |
Mar. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Current liabilities | $ (406) | $ (480) |
| Hospital Operations and other | Discontinued Operations, Held-for-sale | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Accounts receivable | 74 | |
| Other current assets | 50 | |
| Investments and other long-term assets | 2 | |
| Property and equipment | 398 | |
| Other intangible assets | 8 | |
| Goodwill | 67 | |
| Current liabilities | (93) | |
| Long-term liabilities | (313) | |
| Net assets held for sale | $ 193 |