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Consolidated Balance Sheet (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Allowance for accounts and notes receivable $ 2 $ 2
Accumulated depreciation, depletion and amortization $ 64,874 $ 64,735
Common stock, shares authorized (in shares) 2,500,000,000 2,500,000,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued (in shares) 2,100,379,079 2,091,562,747
Treasury stock, shares (in shares) 854,308,013 789,319,875