v3.20.4
Acquisitions, Dispositions And Other Adjustments (HBO LAG, Time Warner, Otter and AppNexus Acquisitions Narrative) (Details) - USD ($)
$ in Millions
1 Months Ended 7 Months Ended 12 Months Ended
Aug. 15, 2018
Aug. 07, 2018
May 31, 2020
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]                
Acquisitions, net of cash acquired           $ 1,851 $ 1,809 $ 43,309
Goodwill         $ 146,370 135,259 146,241 146,370
Revenues           171,760 181,193 170,756
Operating income           6,405 27,955 26,096
Intangible amortization           8,239 7,932 8,347
Conversion to equity of advance made in first quarter of 2018           160 365 1,050
WarnerMedia                
Business Acquisition [Line Items]                
Goodwill         42,101 $ 42,447 $ 42,345 $ 42,101
HBO LAG | WarnerMedia                
Business Acquisition [Line Items]                
Acquisitions, net of cash acquired     $ 141          
Pre-tax remeasurement gain     68          
Acquisition of intangible assets, trade names     640          
Goodwill     346          
HBO LAG | WarnerMedia | Distribution Networks – Net                
Business Acquisition [Line Items]                
Acquisition of other intangible assets     $ 271          
Time Warner                
Business Acquisition [Line Items]                
Total consideration       $ 79,358        
Time Warner | Acquisition                
Business Acquisition [Line Items]                
Revenues         18,209      
Operating income         1,400      
Intangible amortization         $ 3,296      
Otter Media | WarnerMedia                
Business Acquisition [Line Items]                
Acquisitions, net of cash acquired   $ 157            
Pre-tax remeasurement gain   395            
Goodwill   1,239            
Conversion to equity of advance made in first quarter of 2018   $ 1,480            
AppNexus | WarnerMedia                
Business Acquisition [Line Items]                
Goodwill $ 1,220              
Total consideration $ 1,432