Summary of Significant Accounting Policies	6 Months Ended
	Aug. 31, 2023
Accounting Policies [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	Summary of Significant Accounting PoliciesOrganizationAircastle Limited (“Aircastle,” the “Company,” “we,” “us” or “our”) is a Bermuda exempted company that was incorporated on October 29, 2004, under the provisions of Section 14 of the Companies Act of 1981 of Bermuda. Aircastle’s business consists of acquiring, leasing, managing and selling commercial jet aircraft. The Company is controlled by affiliates of Marubeni Corporation (“Marubeni”) and Mizuho Leasing Company, Limited (“Mizuho Leasing” and, together with Marubeni, our “Shareholders”).Aircastle is a holding company and conducts its business through subsidiaries that are wholly owned, either directly or indirectly, by Aircastle.Basis of Presentation and Principles of ConsolidationThe consolidated financial statements presented are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).The accompanying consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting and, in our opinion, reflect all adjustments, including normal recurring items, which are necessary to present fairly the results for interim periods. Operating results for the periods presented are not necessarily indicative of the results that may be expected for the entire year. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been omitted in accordance with the rules and regulations of the SEC. However, we believe that the disclosures are adequate to make the information presented not misleading. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended February 28, 2023.The consolidated financial statements include the accounts of Aircastle and all its subsidiaries, including any Variable Interest Entity (“VIE”) of which Aircastle is the primary beneficiary. All intercompany transactions and balances have been eliminated in consolidation.We manage and analyze our business and report on our results of operations based on one operating segment: leasing, financing, selling and managing commercial flight equipment. Our Chief Executive Officer is the chief operating decision maker.The Company’s management has reviewed and evaluated all events or transactions for potential recognition and/or disclosure subsequent to the balance sheet date of August 31, 2023, through the date on which the consolidated financial statements included in this Form 10-Q were issued.Risk and UncertaintiesIn the normal course of business, Aircastle encounters several significant types of economic risk including credit, market, aviation industry and capital market risks. Credit risk is the risk of a lessee’s inability or unwillingness to make contractually required payments and to fulfill its other contractual obligations to Aircastle. Market risk reflects the change in the value of financings due to changes in interest rate spreads or other market factors, including the value of collateral underlying financings. Aviation industry risk is the risk of a downturn in the commercial aviation industry which could adversely impact a lessee’s ability to make payments, increase the risk of early lease terminations and depress lease rates and the value of the Company’s aircraft. Capital market risk is the risk that the Company is unable to obtain capital at reasonable rates to fund the growth of its business or to refinance existing debt facilities.Use of EstimatesThe preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While Aircastle believes the estimates and related assumptions used in the preparation of the consolidated financial statements are appropriate, actual results could differ from those estimates.Recent Accounting PronouncementsIn March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2020-04, Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASC 848”). ASC 848 provides temporary optional expedients and exceptions to certain U.S. GAAP contract modification requirements for contracts affected by reference rate reform as entities transition away from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. In December 2022, the FASB issued ASU 2022-06 to defer the sunset date of ASC 848 from December 31, 2022, to December 31, 2024, after which entities will no longer be permitted to apply the optional expedients in ASC 848. The ICE Benchmark Administration Limited, LIBOR’s administrator, has ceased publishing all LIBOR settings, including the Overnight, 1-month, 3-month, 6-month, and 12-month USD LIBOR U.S. dollar settings. Effective March 1, 2023, we adopted ASC 848 and commenced the transition of our LIBOR-based contracts to the Secured Overnight Financing Rate (“SOFR” or “Term SOFR”). As of August 31, 2023, we had no aircraft leases or debt financings for which the associated lease rental revenue or interest expense used LIBOR as the applicable reference rate. The adoption of ASC 848 did not have a material impact on our consolidated financial statements