Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v2.4.0.6
Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 96 Months Ended 3 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 30, 2015
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2027
Dec. 31, 2012
TripAdvisor, Inc. [Member]
Restructuring Cost and Reserve [Line Items]                  
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain                 $ 800
Operating Loss Carryforwards, Valuation Allowance         45        
Tax Credit Carryforward, Valuation Allowance         7        
Income Tax Expense (Benefit) [Abstract]                  
Current Federal Tax Expense (Benefit)         (214) (156) (85)    
Current State and Local Tax Expense (Benefit)         (27) (32) 6    
Current Foreign Tax Expense (Benefit)         (140) (120) (111)    
Current Income Tax Expense (Benefit)         (381) (308) (190)    
Deferred Federal Income Tax Expense (Benefit)         (31) (42) 27    
Deferred State and Local Income Tax Expense (Benefit)         11 (6) 21    
Deferred Foreign Income Tax Expense (Benefit)         7 4 14    
Deferred Income Tax Expense (Benefit)         (13) (44) 62    
Income Tax Expense (Benefit)         394 352 128    
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]                  
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate         (695) (329) (339)    
Income Tax Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary         0 0 112    
Gain on consolidation of equity method affiliate not taxable         294 0 0    
Income Tax Reconciliation, State and Local Income Taxes         (11) (22) 18    
Income Tax Reconciliation, Foreign Income Tax Rate Differential         5 (3) 48    
Income Tax Reconciliation, Nondeductible Expense, Impairment Losses         (29) 0 0    
Income Tax Reconciliation, Deductions, Dividends         13 5 5    
Income Tax Reconciliation, Tax Credits         48 3 0    
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance         (8) (15) 0    
Income Tax Reconciliation, Tax Exempt Income         1 8 27    
Income Tax Reconciliation, Other Adjustments         (12) 1 1    
Components of Deferred Tax Assets and Liabilities [Abstract]                  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic         110 70      
Deferred Tax Assets, Tax Credit Carryforwards, Foreign         87 30      
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost         32 44      
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities         80 69      
Deferred Tax Assets, Deferred Income         4 5      
Deferred Tax Assets, Other         116 114      
Deferred Tax Assets, Gross         429 332      
Deferred Tax Assets, Valuation Allowance         (52) (16)      
Deferred Tax Assets, Net         377 316      
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates         492 190      
Deferred Tax Liabilities, Goodwill and Intangible Assets, Intangible Assets         2,751 1,661      
Deferred Tax Liabilities, Discount on exchangeable debentures         890 978      
Deferred Tax Liaiblities, Deferred Gain on Debt Retirements         321 321      
Deferred Tax Liabilities, Other         44 63      
Deferred Tax Liabilities         4,498 3,213      
Deferred Tax Assets (Liabilities), Net         4,121 2,897      
Deferred Tax Liabilities, Current         (912) (851)      
Deferred income taxes         (3,209) (2,046)      
Expiration of deferred tax asset carryforwards, amounts 7 2 30 7       151  
Income Tax Uncertainties [Abstract]                  
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions       6 12 13      
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions         2 3      
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions         (4) (5)      
Unrecognized Tax Benefits, Increases Resulting from Acquisition         24 0      
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations         (11) (11)      
Unrecognized Tax Benefits         146 123 123    
Unrecognized Tax Benefits that Would Impact Effective Tax Rate         93        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued         23        
Valuation Allowance, Deferred Tax Asset, Change in Amount         $ (36)