EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Basic
Net income attributable to Honeywell	$ 1,449	$ 1,463
Weighted average shares outstanding (in shares)	648.2	652.3
Earnings per share of common stock - basic (in dollars per share)	$ 2.24	$ 2.24
Assuming Dilution
Net income attributable to Honeywell	$ 1,449	$ 1,463
Average shares
Weighted average shares outstanding (in shares)	648.2	652.3
Dilutive securities issuable - stock plans (in shares)	3.5	4.3
Total weighted average diluted shares outstanding (in shares)	651.7	656.6
Earnings per share of common stock - assuming dilution (in dollars per share)	$ 2.22	$ 2.23
Stock options excluded from diluted computations (in shares)	2.4	4.9
Total shareowners' equity (in shares)	642.7	651.2
Shares issued (in shares)	957.6	957.6