v3.19.3.a.u2
Document and Entity Information Document
Jan. 09, 2020
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Jan. 09, 2020
Entity Registrant Name MARRIOTT INTERNATIONAL INC /MD/
Entity Incorporation, State or Country Code DE
Entity File Number 1-13881
Entity Tax Identification Number 52-2055918
Entity Address, Address Line One 10400 Fernwood Road,
Entity Address, City or Town Bethesda,
Entity Address, State or Province MD
Entity Address, Postal Zip Code 20817
City Area Code 301
Local Phone Number 380-3000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0001048286
Nasdaq Global Select Market  
Entity Information [Line Items]  
Title of 12(b) Security Class A Common Stock, $0.01 par value
Trading Symbol MAR
Security Exchange Name NASDAQ
Chicago Stock Exchange  
Entity Information [Line Items]  
Title of 12(b) Security Class A Common Stock, $0.01 par value
Trading Symbol MAR
Security Exchange Name CHX