v3.25.4

Variable interest entities - Schedule of Maximum Exposure to Loss in VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Noncontrolling Interest [Abstract]
Carrying value of debt and equity investments	$ 94,832	$ 112,193

X

- Definition

Variable Interest Entity, Entity Maximum Loss Exposure, Equity Investment and Cost Method Investment Amount

+ References

No definition available.

+ Details

Name:	aer_VariableInterestEntityEntityMaximumLossExposureEquityInvestmentandCostMethodInvestmentAmount
Namespace Prefix:	aer_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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