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Commitments and Contingencies (Tables) | 9 Months Ended
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Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Purchase Commitments | As of September 30, 2018, United had firm commitments and options to purchase aircraft from The Boeing Company ("Boeing"), Airbus S.A.S. ("Airbus") and Embraer S.A. ("Embraer") presented in the table below:
Aircraft Type |  | Number of Firm Commitments (a)
Airbus A350 |  | 45 |
Boeing 737 MAX |  | 154 |
Boeing 777-300ER |  | 1 |
Boeing 787 |  | 27 |
Embraer E175 |  | 25 |
(a) United also has options and purchase rights for additional aircraft. |  |
The table below summarizes United's commitments as of September 30, 2018, which primarily relate to the acquisition of aircraft and related spare engines, aircraft improvements and include other capital purchase commitments. Any additional firm aircraft orders, including through the exercise of purchase options and purchase rights, will increase the total future capital commitments of the Company.
|  | (in billions)
Last three months of 2018 |  | $ | 1.1 |
2019 |  | 4.1 |
2020 |  | 4.2 |
2021 |  | 2.9 |
2022 |  | 1.7 |
After 2022 |  | 9.8 |
|  | $ | 23.8 |
Future Minimum Lease Payments for Operating Leases | The table below summarizes the Company's scheduled future minimum lease payments under facility operating leases having initial or remaining noncancelable lease terms of more than one year as of September 30, 2018 (in millions):
|  | Facility and Other Operating Leases
Last three months of 2018 |  | $ | 345 |
2019 |  | 1,244 |
2020 |  | 1,338 |
2021 |  | 1,104 |
2022 |  | 966 |
After 2022 |  | 7,934 |
|  | $ | 12,931 |

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- Definition Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount. + References No definition available. + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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