XML 17 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Jan. 31, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-13881    
Entity Registrant Name MARRIOTT INTERNATIONAL INC /MD/    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 52-2055918    
Entity Address, Address Line One 7750 Wisconsin Avenue    
Entity Address, City or Town Bethesda    
Entity Address, State or Province MD    
Entity Address, Postal Zip Code 20814    
City Area Code 301    
Local Phone Number 380-3000    
Title of 12(b) Security Class A Common Stock, $0.01 par value    
Trading Symbol MAR    
Security Exchange Name NASDAQ    
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 Emerging Growth Company false    
Entity Small Business false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 56,461,271,207
Entity Common Stock, Shares Outstanding   275,695,298  
Documents Incorporated by Reference
Portions of the Proxy Statement prepared for the 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this report.
    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001048286