Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Consolidated Balance Sheets (Unaudited)
Allowances for doubtful accounts	$ 1,121	$ 907
Common stock, par value	$ 1	$ 1
Common stock, authorized	14,000,000,000	14,000,000,000
Common stock, issued	7,620,748,598	7,620,748,598
Treasury stock, held	317,374,689	339,120,073

Amount of allowance for credit loss on accounts receivable, classified as current.

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