v3.19.3
Cover Page - shares
9 Months Ended
Sep. 30, 2019
Nov. 01, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
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  
City Area Code 203  
Local Phone Number 504-1020  
Title of 12(b) Security Common Shares, par value $0.01 per share  
Trading Symbol AYR  
Security Exchange Name NYSE  
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   74,635,330
Entity Central Index Key 0001362988  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --12-31  
Entity Address, Postal Zip Code 06901