Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 500	$ 519
Preferred shares, par value (in dollars per share)	$ 1	$ 1
Preferred shares, authorized (in shares)	1,000,000	1,000,000
Preferred shares, issued (in shares)	0	0
Common shares, authorized (in shares)	2,400,000,000	2,400,000,000
Common shares, issued (in shares)	1,986,519,278	1,985,273,421
Common shares held in treasury (in shares)	248,724,257	221,191,228