Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Segment Information (Summary of Net Revenues and Adjusted EBITDA by Segment) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Segment Reporting Information [Line Items]    
Document Fiscal Year Focus 2019  
Net Revenues $ 468 $ 302
Adjusted EBITDA 111 92
Reportable Segments    
Segment Reporting Information [Line Items]    
Net Revenues 466 302
Adjusted EBITDA 129 102
Reportable Segments | Hotel Franchising    
Segment Reporting Information [Line Items]    
Net Revenues 269 203
Adjusted EBITDA 113 86
Reportable Segments | Hotel Management    
Segment Reporting Information [Line Items]    
Net Revenues 197 99
Adjusted EBITDA 16 16
Corporate and Other    
Segment Reporting Information [Line Items]    
Net Revenues 2 0
Adjusted EBITDA $ (18) $ (10)