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Intangibles - Finite-lived intangible assets (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Maintenance rights
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 2,254,960	$ 2,540,286
Lease premium, net
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, net	722,769	824,167
Maintenance rights and lease premium, net
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 2,977,729	$ 3,364,453

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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-Section 50
-Paragraph 2
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-Publisher FASB
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