v3.26.1
Document and Entity Information - USD ($)
 12 Months Ended
Mar. 31, 2026
May 22, 2026
Sep. 30, 2025
Cover Abstract      
Entity Registrant Name DORIAN LPG LTD.    
Entity Central Index Key 0001596993    
Document Type 10-K    
Document Period End Date Mar. 31, 2026    
Document Annual Report true    
Document Transition Report false    
Securities Act File Number 001-36437    
Entity Incorporation, State or Country Code 1T    
Entity Tax Identification Number 66-0818228    
Entity Address, Address Line One 27 Signal Road    
Entity Address, City or Town Stamford    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06902    
City Area Code 203    
Local Phone Number 674-9900    
Title of 12(b) Security Common stock, par value $0.01 per share    
Trading Symbol LPG    
Security Exchange Name NYSE    
Amendment Flag false    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 1,093,630,707
Entity Common Stock, Shares Outstanding   42,782,681  
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Auditor Name Deloitte Certified Public Accountants S.A.    
Auditor Firm ID 1163    
Auditor Location Athens, Greece    
Documents Incorporated by Reference

Portions of the registrant’s definitive proxy statement to be filed by the registrant in connection with its 2026 Annual Meeting of Shareholders are incorporated by reference in Part III.

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