Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

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Acquisitions (Details)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Dec. 29, 2017
USD ($)
shares
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Cash and cash equivalents $ 22      
Property and equipment 220      
Other assets 752      
Goodwill 957   $ 7,052 $ 7,082
Trademarks 676      
Intangible assets subject to amortization 598      
Accounts payable and accrued liabilities (519)      
Long-term debt (467)      
Other liabilities assumed (13)      
Deferred tax liabilities (278)      
Total $ 1,948      
HSNi        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Business Acquisition, Percentage of Voting Interests Acquired 62.00%      
Remeasurement Gain $ 409      
Fair market value of ownership interest prior to acquisition 605      
Equity value of acquisition 1,900      
Business Acquisition, Goodwill, Expected Tax Deductible Amount 0      
Adjustments to property and equipment     6  
Adjustments to Accounts payable and accrued liabilities     (4)  
Adjustments to debt     (7)  
Adjustments to other liabilities assumed     (1)  
Adjustment to goodwill     7  
Adjustments to deferred tax liabilities     3  
Adjustments to Intangibles     (4)  
Business Acquisition, Pro Forma Information        
Pro Forma Revenue   $ 3,173 6,287  
Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax   $ 185 $ 365  
HSNi | Customer Relationships        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Intangible assets subject to amortization $ 421      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 9 years      
HSNi | Capitalized Software        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Intangible assets subject to amortization $ 16      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 1 year      
HSNi | Technology        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Intangible assets subject to amortization $ 161      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 7 years      
QVC Group | HSNi        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Business Acquisition Equity Interests Issued or Issuable Number Of Shares Issued Per Shares Acquired 1.65      
Common Class A | QVC Group | HSNi        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]        
Stock Issued During Period Shares Acquisitions | shares 53.6      
Value of shares issued to acquire business $ 1,300