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v3.22.1

Post-retirement benefit plans - Schedule of pension plan participants (Details) | Dec. 31, 2021 employee
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Defined Benefit Plan, Plan Assets, Allocation [Line Items] |
Number of participants at end of period | 220
Actives |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |
Number of participants at end of period | 88
Frozen actives |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |
Number of participants at end of period | 1
Deferreds |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |
Number of participants at end of period | 93
Pensioners |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |
Number of participants at end of period | 38

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- Definition Defined Benefit Plan, Number of Employees + References No definition available. + Details
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Namespace Prefix: | aer_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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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. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |