Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Intangible Assets (Amortization Expense of Amortizable Intangible Assets) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 37 $ 38 $ 31
2019 37    
2020 35    
2021 35    
2022 34    
2023 34    
Franchise agreements      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 27 27 22
Management agreements      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 10 10 7
Trademarks, net      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 0 0 1
Other      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 0 $ 1 $ 1