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INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Other Income Tax Data [Line Items] |  |  |  |  |  |
Effective tax rate | 35.00% |  | 34.00% | 35.10% | 34.60% |
Adjustment to income tax expense |  |  | $ (66) |  |  | $ 23
Income tax expense | $ 683 |  | 648 | $ 1,982 | $ 1,860 |
Coyote Logistics [Member] |  |  |  |  |  |
Other Income Tax Data [Line Items] |  |  |  |  |  |
Distribution of cash held by subsidiary |  | $ 500 |  |  |  |
Income tax expense |  |  | $ 21 |  |  |

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