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Asset impairment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Asset Impairment Charges [Abstract]
Flight equipment held for operating leases (Note 5)	$ 986,559	$ 69,383	$ 39,318
Goodwill (Note 7)	58,094	0	0
Flight equipment held for sale	5,483	766	4,868
Maintenance rights and other	36,847	0	0
Asset impairment	$ 1,086,983	$ 70,149	$ 44,186

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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