XML 16 R5.htm IDEA: XBRL DOCUMENT v3.21.2
CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 69 $ 67
Inventories classified in Other assets 2,373 2,070
Accumulated depreciation $ 18,155 $ 18,162
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) 1,051,780,149 1,046,877,695