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