Annual report pursuant to Section 13 and 15(d)

Segment Information (Schedule of Segment Profitability Measure and Significant Segment Expenses) (Details)

v3.25.0.1
Segment Information (Schedule of Segment Profitability Measure and Significant Segment Expenses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Net revenues $ 1,408 $ 1,397 $ 1,498
Net income 289 289 355
Hotel Franchising      
Segment Reporting Information [Line Items]      
Net revenues 1,408 1,397  
Compensation (255) (241)  
Selling and advertising (119) (136)  
Outsourced services and information technology (127) (120)  
Professional fees (90) (85)  
Other items (189) (209)  
Net income 289 289  
Corporate Segment      
Segment Reporting Information [Line Items]      
Other overhead costs $ 339 $ 317  
Reportable Segments      
Segment Reporting Information [Line Items]      
Net revenues     1,498
Compensation    
Selling and advertising    
Outsourced services and information technology    
Professional fees    
Other items    
Net income     644
Reportable Segments | Hotel Franchising      
Segment Reporting Information [Line Items]      
Net revenues     1,277
Compensation     (213)
Selling and advertising     (134)
Outsourced services and information technology     (119)
Professional fees     (80)
Other items     (148)
Net income     583
Reportable Segments | Hotel Management      
Segment Reporting Information [Line Items]      
Net revenues     221
Compensation     (9)
Selling and advertising     0
Outsourced services and information technology     (1)
Professional fees     (2)
Other items     (148)
Net income     61
Corporate And Reconciling Items      
Segment Reporting Information [Line Items]      
Net income     $ (289)