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BUSINESS ACQUISITIONS (Details) - USD ($) $ in Millions |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 11, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 6,605 | $ 6,563 | $ 6,335
Customer Relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets, useful life |  | 18 years |  |
Boyce & Bynum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Consideration | $ 61 |  |  |
Cash paid for acquisition | 55 |  |  |
Goodwill | 41 |  |  |
Goodwill, expected tax deductible amount | 35 |  |  |
Boyce & Bynum | Customer Relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets | $ 20 |  |  |
Intangible assets, useful life | 15 years |  |  |
Boyce & Bynum | Fair Value, Inputs, Level 3 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Fair Value of Contingent Consideration | $ 6 | $ 6 |  |

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