Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 15, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-35121
Entity Registrant Name	AIR LEASE CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-1840403
Entity Address, Address Line One	2000 Avenue of the Stars,
Entity Address, Address Line Two	Suite 1000N
Entity Address, City or Town	Los Angeles,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90067
City Area Code	310
Local Phone Number	553-0555
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 4.5
Entity Common Stock, Shares Outstanding		114,047,485
Documents Incorporated by Reference	Designated portions of the Proxy Statement relating to registrant’s 2022 Annual Meeting of Shareholders have been incorporated by reference into Part III of this report.
Entity Central Index Key	0001487712
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Class A Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AL
Security Exchange Name	NYSE
6.150% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	6.150% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	AL PRA
Security Exchange Name	NYSE