Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Contract Liabilities) (Details)

v3.19.2
Revenue Recognition (Contract Liabilities) (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]    
Contract liabilities $ 269 $ 273
Deferred initial franchise fee revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 130 127
Deferred loyalty program revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 86 74
Deferred co-branded credit card program revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 14 30
Deferred hotel management fee revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities 2 21
Deferred other revenue    
Disaggregation of Revenue [Line Items]    
Contract liabilities $ 37 $ 21