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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2019
Commitments and Contingencies |
Schedule of commitments to acquire aircraft | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Aircraft Type |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Thereafter |  | Total
Airbus A220-300 | ​ | — | ​ | 5 | ​ | 10 | ​ | 10 | ​ | 10 | ​ | 15 | ​ | 50
Airbus A320/321neo(1) |  | 25 |  | 26 |  | 32 |  | 25 |  | 16 |  | 36 |  | 160
Airbus A330-900neo |  | 1 |  | 5 |  | 6 |  | 3 |  | — |  | — |  | 15
Airbus A350-900/1000 |  | 3 |  | 6 |  | 3 |  | 4 |  | 4 |  | — |  | 20
Boeing 737-7/8/9 MAX(2) |  | 4 |  | 25 |  | 35 |  | 41 |  | 30 |  | — |  | 135
Boeing 787-9/10 |  | 13 |  | 9 |  | 6 |  | 5 |  | — |  | — |  | 33
Total |  | 46 |  | 76 |  | 92 |  | 88 |  | 60 |  | 51 |  | 413
(1) | Our Airbus A320/321neo aircraft orders include 52 long-range variants and 29 extra long-range variants.
(2) | The table above reflects our estimate of future Boeing 737 MAX aircraft delivery delays based on information currently available to us. The actual delivery dates of such Boeing 737 MAX aircraft may differ from our estimate and could be further impacted by the length of the grounding and the pace at which Boeing can deliver aircraft following the lifting of the grounding, among other factors.
Schedule of commitments for the acquisition of aircraft and other equipment at an estimated aggregate purchase price | ​
​ | ​ | ​ | ​
​ | ​ | (in thousands)
Years ending December 31, |  | ​
2020 | ​ | $ | 3,883,733
2021 | ​ |  | 6,083,797
2022 | ​ |  | 6,422,783
2023 | ​ |  | 5,344,481
2024 | ​ |  | 3,257,547
Thereafter | ​ |  | 2,428,668
Total | ​ | $ | 27,421,009
Schedule of commitments for minimum rentals under the non-cancelable lease term | ​
​ | ​ | ​ | ​
​ | ​ | (in thousands)
Years ending December 31, |  | ​
2020 | ​ | $ | 6,892
2021 | ​ |  | 7,063
2022 | ​ |  | 6,512
2023 | ​ |  | 6,390
2024 | ​ |  | 4,547
Thereafter | ​ |  | 33,054
Total | ​ | $ | 64,458

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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