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COMMITMENT AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Environmental Obligations | The following is a summary of our environmental obligations:
| (In Millions)
| December 31, 2020 |  | December 31, 2019
Environmental obligations | $ | 135 |  |  | $ | 2 |
Less current portion | 18 |  |  | — |
Long-term environmental obligations | $ | 117 |  |  | $ | 2 |

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