Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 06, 2020
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
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, 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 Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		113,643,462
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001487712
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AL
Security Exchange Name	NYSE
Series A Preferred Stock
Document 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