Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Summary of Net Revenues and Adjusted EBITDA by Segment) (Details)

v3.21.1
Segment Information (Summary of Net Revenues and Adjusted EBITDA by Segment) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Segment Reporting Information [Line Items]    
Net Revenues $ 303 $ 410
Adjusted EBITDA 97 109
Reportable Segments    
Segment Reporting Information [Line Items]    
Net Revenues 303 410
Adjusted EBITDA 110 127
Reportable Segments | Hotel Franchising    
Segment Reporting Information [Line Items]    
Net Revenues 209 243
Adjusted EBITDA 105 110
Reportable Segments | Hotel Management    
Segment Reporting Information [Line Items]    
Net Revenues 94 167
Adjusted EBITDA 5 17
Corporate, Non-Segment    
Segment Reporting Information [Line Items]    
Net Revenues 0 0
Adjusted EBITDA $ (13) $ (18)