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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2016
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 non-cancelable commitments related to these items at December 31, 2016, are summarized below (in millions):
| 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total
Leases and rights-of-way easements (1) | $ | 195 |  |  | $ | 165 |  |  | $ | 140 |  |  | $ | 118 |  |  | $ | 97 |  |  | $ | 404 |  |  | $ | 1,119 |
Other commitments (2) | 257 |  |  | 166 |  |  | 153 |  |  | 132 |  |  | 128 |  |  | 378 |  |  | 1,214 |
Total | $ | 452 |  |  | $ | 331 |  |  | $ | 293 |  |  | $ | 250 |  |  | $ | 225 |  |  | $ | 782 |  |  | $ | 2,333 |
(1) | Includes capital and operating leases as defined by FASB guidance as well as obligations for rights-of-way easements. Lease expense for 2016, 2015 and 2014 was $198 million, $164 million and $145 million, respectively.
(2) | Primarily includes third-party storage and transportation agreements and pipeline throughput agreements, as well as approximately $855 million associated with an agreement to transport crude oil on a pipeline that is owned by an equity method investee, in which we own a 50% interest. Our commitment to transport is supported by crude oil buy/sell agreements with third parties (including Oxy) with commensurate quantities.

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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