v3.19.3
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Entity Information [Line Items]    
Document Type 10-Q  
Document Fiscal Period Focus Q3  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
Document Transition Report false  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001075531  
Entity File Number 1-36691  
Entity Registrant Name Booking Holdings Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 06-1528493  
Entity Address, Address Line One 800 Connecticut Avenue  
Entity Address, City or Town Norwalk  
Entity Address, State or Province CT  
Entity Address, Postal Zip Code 06854  
City Area Code 203  
Local Phone Number 299-8000  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   41,855,700
Common Stock    
Entity Information [Line Items]    
Title of 12(b) Security Common Stock par value $0.008 per share  
Trading Symbol BKNG  
Security Exchange Name NASDAQ  
0.800% Senior Notes Due 2022    
Entity Information [Line Items]    
Title of 12(b) Security 0.800% Senior Notes Due 2022  
Trading Symbol BKNG 22A  
Security Exchange Name NYSE  
2.150% Senior Notes Due 2022    
Entity Information [Line Items]    
Title of 12(b) Security 2.150% Senior Notes Due 2022  
Trading Symbol BKNG 22  
Security Exchange Name NYSE  
2.375% Senior Notes Due 2024    
Entity Information [Line Items]    
Title of 12(b) Security 2.375% Senior Notes Due 2024  
Trading Symbol BKNG 24  
Security Exchange Name NYSE  
1.800% Senior Notes Due 2027    
Entity Information [Line Items]    
Title of 12(b) Security 1.800% Senior Notes Due 2027  
Trading Symbol BKNG 27  
Security Exchange Name NYSE