v3.10.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts [1] $ 541 $ 584
Short term borrowings, current portion of long term debt [1] $ 4,776 $ 3,546
Preferred stock, shares authorized [1] 27,000,000 27,000,000
Preferred stock, shares issued [1] 478 524
Common stock, par value (in dollars per share) [1] $ 0.05 $ 0.05
Common stock, shares authorized [1] 12,000,000,000 12,000,000,000
Common stock, shares issued [1] 9,332,000,000 9,275,000,000
Treasury stock, shares at cost [1] 3,615,000,000 3,296,000,000
[1] Amounts may not add due to rounding.