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Lease revenue - Narrative (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Percent of rent attributable to variable leases	2.00%	5.00%

X

- Definition

Lessor, Operating Lease, Percent Of Rent Attributable To Variable Leases

+ References

No definition available.

+ Details

Name:	aer_LessorOperatingLeasePercentOfRentAttributableToVariableLeases
Namespace Prefix:	aer_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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