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Related party transactions (Schedule of Related Party Transactions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Dividends	$ 267	$ 3,148	$ 3,180
AerDragon
Related Party Transaction [Line Items]
Dividends	0	1,667	1,667
ACSAL
Related Party Transaction [Line Items]
Dividends	267	1,088	1,119
AerLift
Related Party Transaction [Line Items]
Dividends	0	393	394
Management Service
Related Party Transaction [Line Items]
Management fees	1,613	2,515	2,654
Management Service | AerDragon
Related Party Transaction [Line Items]
Management fees	543	675	497
Management Service | ACSAL
Related Party Transaction [Line Items]
Management fees	480	480	480
Management Service | AerLift
Related Party Transaction [Line Items]
Management fees	$ 590	$ 1,360	$ 1,677

X

- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI http://asc.fasb.org/extlink&oid=121586364&loc=SL94080555-108585

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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

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section S99
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-Topic 220
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-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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