v3.25.2
Cover - USD ($)
 12 Months Ended
Jun. 30, 2025
Aug. 04, 2025
Dec. 31, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 2025    
Current Fiscal Year End Date --06-30    
Entity File Number 001-15317    
Entity Registrant Name ResMed Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 98-0152841    
Entity Address, Address Line One 9001 Spectrum Center Blvd.    
Entity Address, City or Town San Diego    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92123    
Entity Address, Country US    
City Area Code 858    
Local Phone Number 836-5000    
Title of 12(b) Security Common Stock, par value $0.004 per share    
Trading Symbol RMD    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 33,419,694,564
Entity Common Stock, Shares Outstanding   146,414,839  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive Proxy Statement to be delivered to stockholders in connection with the registrant’s 2025 Annual Meeting of Stockholders, to be filed within 120 days after the end of the fiscal year covered by this Form 10-K, are incorporated by reference into Part III of this report.
    
Amendment Flag false    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000943819    
Document Fiscal Year Focus 2025    
Document Transition Report false