v3.10.0.1
Significant Transactions (Allocation of Purchase Price) (Details)
$ in Millions, £ in Billions
3 Months Ended 12 Months Ended
Oct. 09, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
GBP (£)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]          
Goodwill, Acquired During Period       $ 29,925 $ 418
Sky Limited [Member]          
Business Acquisition [Line Items]          
Consideration transferred $ 39,387 $ 39,400 £ 30.2    
Cash 1,283        
Accounts receivable and other current assets 2,405        
Film and television costs (See Note 4) 2,526        
Property and equipment (See Note 11) 3,386        
Intangible assets (See Note 12) 20,628        
Accounts payable, accrued liabilities and other current liabilities (5,791)        
Long-term debt (See Note 7) (11,215)        
Deferred tax assets (liabilities), net (See Note 5) (1,903)        
Other noncurrent assets and (liabilities), net (1,809)        
Fair value of identifiable net assets acquired 9,510        
Goodwill, Acquired During Period $ 29,877