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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of minimum required payments for CVR's operating lease agreements and unconditional purchase obligations | The minimum required payments for CVR’s operating lease agreements and unconditional purchase obligations are as follows:
Year Ending December 31, | Operating Leases |  | Unconditional Purchase Obligations
(in millions) |
2019 | $ | 24 |  |  | $ | 129 |
2020 | 20 |  |  | 89 |
2021 | 18 |  |  | 78 |
2022 | 16 |  |  | 76 |
2023 | 12 |  |  | 75 |
Thereafter | 26 |  |  | 444 |
| $ | 116 |  |  | $ | 891 |
Leases - The Company leases equipment, including railcars and real properties, under long-term operating leases. For the years ended December 31, 2018, 2017 and 2016, rent expense totaled approximately $10 million, $8 million and $8 million, respectively. Supply Commitments - The Company is a party to various supply agreements with both related and third parties which commit the Company to purchase minimum volumes of crude oil, hydrogen, oxygen, nitrogen, petroleum coke (“pet coke”), and natural gas to run its facilities’ operations. For the years ended December 31, 2018, 2017 and 2016. amounts purchased under these supply agreements totaled approximately $214 million, $209 million, and $151 million, respectively.

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- Definition Tabular disclosure of future minimum lease agreements and unconditional purchase obligation payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years. + References No definition available. + Details
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- References No definition available. + Details
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