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Contingencies and Commitments (Tables) | 12 Months Ended
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Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract] |
Schedule of undiscounted commitments | The aggregate undiscounted commitments under our gathering, processing and transportation agreements, excluding any reimbursement from working interest and royalty interest owners, credits for third-party volumes or future costs under cost-of-service agreements, are presented below:
|  | December 31, 2019
|  | ($ in millions)
2020 |  | $ | 1,136 |
2021 |  | 1,033 |
2022 |  | 913 |
2023 |  | 789 |
2024 |  | 690 |
2025 – 2034 |  | 3,479 |
Total |  | $ | 8,040 |
The aggregate undiscounted minimum future payments under these service contracts are detailed below.
|  | December 31, 2019
|  | ($ in millions)
2020 |  | $ | 7 |
2021 |  | 7 |
2022 |  | 2 |
Total |  | $ | 16 |

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
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