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v3.22.4

Concentration of Risk - Narrative (Details) | 12 Months Ended |
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Dec. 31, 2022 leased_aircraft country | Dec. 31, 2021 country leased_aircraft
Risks and Uncertainties [Abstract] |  |
Number of aircraft leased | leased_aircraft | 117 | 118
Number of countries | country | 62 | 60
Minimum percentage of aircraft operated internationally based on net book value | 95.00% |

X
- Definition Represents the minimum percentage of aircraft operated internationally. + References No definition available. + Details
Name: | al_MinimumPercentageOfAircraftOperatedInternationally
Namespace Prefix: | al_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of aircraft leased. + References No definition available. + Details
Name: | al_NumberOfAircraftLeased
Namespace Prefix: | al_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration