Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.7.0.1
Assets and Liabilities Measured at Fair Value (Details)
shares in Millions, $ in Millions
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Jun. 23, 2016
USD ($)
Jun. 06, 2016
$ / item
shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities $ 17 $ 118    
Available-for-sale securities 4 16    
Forward Contracts        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative, Floor Price | $ / item       38.90
Derivative, Cap Price | $ / item       98.96
Forward Contracts | Variable postpaid forward        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Debt Instrument, Face Amount     $ 259  
Recurring        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash equivalents 24 53    
Marketable securities 17 118    
Available-for-sale securities 4 16    
Recurring | Variable postpaid forward        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset 69 51    
Recurring | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash equivalents 24 53    
Recurring | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Marketable securities 17 118    
Available-for-sale securities 4 16    
Recurring | Level 2 | Variable postpaid forward        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Asset $ 69 $ 51    
Trip Advisor | Forward Contracts        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Forward Contract Shares indexed | shares       7