v3.21.2
Cash Flow Information (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Cash Payments      
Interest   $ 695 $ 591
Income taxes   358 803
Net Sales (Purchases) of Investments      
Short-term investments purchased   (5,487) (9,662)
Short-term investments sold   8,478 8,776
Long-term investments purchased   (228) (271)
Long-term investments sold   83 68
Net Sales (Purchases) of Investments   2,846 (1,089)
Business Acquisition [Line Items]      
Deposit recorded in Cash Flows from Investing - Other   $ 386 $ 31
Shell Enterprises LLC [Member]      
Business Acquisition [Line Items]      
Deposit recorded in Cash Flows from Investing - Other $ 475