Company Background and Overview (Details)	Mar. 31, 2022 aircraft
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of aircraft owned	370
Number of aircraft managed	87
Number of aircraft on order with manufacturers	451

Represents the number of aircraft on order with manufacturers.

No definition available.

Name:	al_NumberOfAircraftOnOrderWithManufacturers
Namespace Prefix:	al_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant