XML 123 R109.htm IDEA: XBRL DOCUMENT
v3.20.4

Share-based compensation (Expected share-based compensation expense) (Details) $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
2021 |
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] |
Expected share-based compensation expense | $ 50.5
2022 |
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] |
Expected share-based compensation expense | 30.6
2023 |
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] |
Expected share-based compensation expense | 10.5
2024 |
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] |
Expected share-based compensation expense | 3.2
2025 |
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] |
Expected share-based compensation expense | $ 0.6

X
- Definition Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items] + References No definition available. + Details
Name: | aer_UnrecognizedShareBasedCompensationExpectedPeriodOfRecognitionLineItems
Namespace Prefix: | aer_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=aer_ShareBasedCompensationAwardTrancheFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=aer_ShareBasedCompensationAwardTrancheFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |