Annual report pursuant to Section 13 and 15(d)

Franchising, Marketing and Reservation Activities (Narrative) (Details)

v3.22.0.1
Franchising, Marketing and Reservation Activities (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]      
Fee-related and other revenues $ 1,245 $ 950 $ 1,430
Minimum      
Disaggregation of Revenue [Line Items]      
Franchise/management agreement term 10 years    
Maximum      
Disaggregation of Revenue [Line Items]      
Franchise/management agreement term 20 years    
Initial franchise fee revenue      
Disaggregation of Revenue [Line Items]      
Fee-related and other revenues $ 14 20 18
Forgiveness of note receivable      
Disaggregation of Revenue [Line Items]      
Fee-related and other revenues $ (11) $ (9) $ (8)