v3.21.2
Consolidated Balance Sheet (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Consolidated Balance Sheet [Abstract]    
Allowance for accounts and notes receivable $ 2 $ 4
Accumulated depreciation, depletion and amortization $ 65,223 $ 62,213
Common stock, shares authorized 2,500,000,000 2,500,000,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares issued 2,089,046,718 1,798,844,267
Treasury stock, shares 770,099,851 730,802,089