Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Amortization Expense of Amortizable Intangible Assets) (Details)

v3.22.0.1
Intangible Assets (Amortization Expense of Amortizable Intangible Assets) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 38 $ 37 $ 38
2022 32    
2023 27    
2024 26    
2025 26    
2026 25    
Franchise agreements      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 27 27 27
Management agreements      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 11 10 10
Other      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 0 $ 0 $ 1