v3.20.4
Additional Financial Information (Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Advertising expense $ 5,253 $ 6,121 $ 5,100
Interest expense incurred 8,048 8,622 8,450
Capitalized interest (123) (200) (493)
Total interest expense $ 7,925 $ 8,422 $ 7,957