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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract] |
Schedule of future non-cancelable commitments | We have commitments, some of which are leases, related to real property, equipment and operating facilities. We also incur costs associated with leased land, rights-of-way, permits and regulatory fees. Future noncancelable commitments related to these items at December 31, 2019 are summarized below (in millions):
| 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Thereafter |  | Total
Leases (1) | $ | 130 |  |  | $ | 99 |  |  | $ | 91 |  |  | $ | 69 |  |  | $ | 57 |  |  | $ | 308 |  |  | $ | 754 |
Other commitments (2) | 272 |  |  | 296 |  |  | 292 |  |  | 276 |  |  | 271 |  |  | 968 |  |  | 2,375 |
Total | $ | 402 |  |  | $ | 395 |  |  | $ | 383 |  |  | $ | 345 |  |  | $ | 328 |  |  | $ | 1,276 |  |  | $ | 3,129 |
(1)Includes both operating and finance leases as defined by FASB guidance. Leases are primarily for (i) railcars, (ii) office space, (iii) land, (iv) vehicles, (v) storage tanks and (vi) tractor trailers. See Note 14 for additional information. (2)Primarily includes third-party storage and transportation agreements and pipeline throughput agreements, as well as approximately $1.8 billion associated with agreements to store, process and transport crude oil at posted tariff rates on pipelines or at facilities that are owned by equity method investees, in which we own a 50% interest. A portion of our commitment to transport is supported by crude oil buy/sell agreements with third parties with commensurate quantities. Expense associated with these storage, transportation and throughput agreements was approximately $236 million, $228 million and $197 million for 2019, 2018 and 2017, respectively.

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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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