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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Retained earnings | $ 8,080 | $ 7,965 | $ 7,573 |  | $ 6,802
Revenue Recognition [Abstract] |  |  |  |  |
Contract with Customer, Liability | 18 | 4 |  |  |
Contract with Customer, Asset, after Allowance for Credit Loss | $ 62 | 65 |  |  |
Environmental Costs [Abstract] |  |  |  |  |
Expected Payment Period of Environmental Contingencies | 30 years |  |  |  |
Accounts receivable and allowance for doubtful accounts [Abstract] |  |  |  |  |
Allowance for doubtful accounts | $ 14 | 11 |  |  |
Working Capital Management and Off Balance Sheet Arrangements [Abstract] |  |  |  |  |
Receivable Sold Under Factoring Arrangement | $ 1,500 | $ 900 |  |  |
Building And Building Equipment [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 20 to 50 years |  |  |  |
Machinery and Equipment [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 3 to 33 years |  |  |  |
Computer software [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 3 to 5 years |  |  |  |
Office furniture and fixtures and computer equipment [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 5 to 10 years |  |  |  |
Vehicles, railcars, and general machinery and equipment [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 5 to 20 years |  |  |  |
Manufacturing-related improvements [Member] |  |  |  |  |
Depreciation [Abstract] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives | 20 to 33 years |  |  |  |
Accounting Standards Update 2014-09 [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Retained earnings |  |  |  | $ 53 |

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