v2.4.0.6
Document and Entity Information
9 Months Ended
Sep. 07, 2012
Sep. 21, 2012
Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 07, 2012  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Trading Symbol MAR  
Entity Registrant Name MARRIOTT INTERNATIONAL INC /MD/  
Entity Central Index Key 0001048286  
Current Fiscal Year End Date --12-28  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   315,540,075