Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 449	$ 492
Current portion of long-term debt	$ 2,560	$ 1,636
Preferred stock, shares authorized	27,000,000	27,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, shares authorized	12,000,000,000	12,000,000,000
Common stock, shares, issued	9,519,000,000	9,471,000,000
Treasury stock (in shares)	3,903,000,000	3,851,000,000