Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Contract Liabilities) (Details)

v3.19.1
Revenue Recognition (Contract Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]    
Contract liabilities $ 265 $ 273
Deferred initial franchise fee revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 129 127
Deferred loyalty program revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 72 74
Deferred co-branded credit card program revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 20 30
Deferred hotel management fee revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 22 21
Deferred other revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities $ 22 $ 21