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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Summary of Commitments to Purchase Aircraft

As of December 31, 2019, 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:

					Scheduled Aircraft Deliveries
Aircraft Type		Number of Firm Commitments (a)			2020			After 2020
Airbus A321XLR		50			—			50
Airbus A350		45			—			45
Boeing 737 MAX		171			44			127
Boeing 777-300ER		2			2			—
Boeing 787		16			15			1
Embraer E175		20			20			—

(a) United also has options and purchase rights for additional aircraft.

The table below summarizes United's commitments as of December 31, 2019, which include aircraft and related spare engines, aircraft improvements and all non-aircraft capital commitments (in billions):

2020		$	6.9
2021		4.3
2022		2.0
2023		1.0
2024		1.2
After 2024		11.3
		$	26.7

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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.

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