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Intangibles - Schedule of Maintenance Rights and Lease Premium, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Maintenance rights	$ 2,540,286	$ 3,292,007
Lease premium, net	824,167	1,152,513
Maintenance rights and lease premium, net	$ 3,364,453	$ 4,444,520

X

- Definition

Lease Premium

+ References

No definition available.

+ Details

Name:	aer_LeasePremium
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maintenance Rights

+ References

No definition available.

+ Details

Name:	aer_MaintenanceRights
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maintenance Rights And Lease Premium, Net

+ References

No definition available.

+ Details

Name:	aer_MaintenanceRightsAndLeasePremiumNet
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration