Cover Page - USD ($) $ in Millions	12 Months Ended
	Feb. 29, 2024	Apr. 19, 2024	Aug. 31, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Feb. 29, 2024
Document Transition Report	false
Entity File Number	001-32959
Entity Registrant Name	AIRCASTLE LIMITED
Entity Incorporation, State or Country Code	D0
Entity Tax Identification Number	98-0444035
Entity Address, Address Line One	c/o Aircastle Advisor LLC
Entity Address, Address Line Two	201 Tresser Boulevard, Suite 400
Entity Address, City or Town	Stamford
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06901
City Area Code	203
Local Phone Number	504-1020
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,564
Entity Central Index Key	0001362988
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--02-29
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Public Float			$ 0
Document Information [Line Items]
Entity Voluntary Filers	Yes
Entity Well-known Seasoned Issuer	No
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Common Stock
Cover [Abstract]
Title of 12(b) Security	Common Shares, par value $0.01 per share
Document Information [Line Items]
Title of 12(b) Security	Common Shares, par value $0.01 per share
No Trading Symbol Flag	true
Preferred Stock
Cover [Abstract]
Title of 12(b) Security	Preference Shares, par value $0.01 per share
Document Information [Line Items]
Title of 12(b) Security	Preference Shares, par value $0.01 per share
No Trading Symbol Flag	true