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CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 77 $ 62
Inventories classified in Other assets 2,641 2,194
Accumulated depreciation $ 17,921 $ 18,192
Common stock, par value (in dollars per share) $ 0.50 $ 0.50
Common stock, authorized (shares) 6,500,000,000 6,500,000,000
Common stock, issued (in shares) 3,577,103,522 3,577,103,522
Treasury stock (in shares) 1,043,697,097 1,049,499,023