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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In October 2019, the United States government imposed tariffs on certain imports from the European Union, including a 10% tariff on new Airbus aircraft and related parts. The Company is currently evaluating the impact of the tariffs on the cost and timing of future aircraft deliveries. Please refer to "Part II. Other Information—Item 1A. Risk Factors" for further discussion on this topic.