Quarterly report [Sections 13 or 15(d)]

Other Expenses and Charges - Restructuring Activity (Details)

v3.26.1
Other Expenses and Charges - Restructuring Activity (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
employee
Mar. 31, 2025
USD ($)
Restructuring Reserve [Roll Forward]    
Restructuring Charges $ 5 $ 0
Other Current Assets [Member]    
Restructuring Reserve [Roll Forward]    
Ending balance 7  
Other Noncurrent Assets [Member]    
Restructuring Reserve [Roll Forward]    
Ending balance 3  
2025 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Beginning balance 8  
Restructuring Charges 3  
Payments for Restructuring (3)  
Ending balance 8  
2025 Global Cost Basis and Streamlining Plan | Hotel Franchising Segment    
Restructuring Reserve [Roll Forward]    
Restructuring and Related Cost, Incurred Cost $ 3  
Number of employees impacted | employee 202  
2026 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Beginning balance $ 0  
Restructuring Charges 2  
Payments for Restructuring 0  
Ending balance 2  
Employee Severance [Member]    
Restructuring Reserve [Roll Forward]    
Beginning balance 8  
Restructuring Charges 5  
Payments for Restructuring (3)  
Ending balance 10  
Employee Severance [Member] | 2025 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Beginning balance 4  
Restructuring Charges 3  
Payments for Restructuring (3)  
Ending balance 4  
Facility Closing | 2025 Restructuring Plan    
Restructuring Reserve [Roll Forward]    
Beginning balance 4  
Restructuring Charges 0  
Payments for Restructuring 0  
Ending balance $ 4