| DOCUMENT AND ENTITY INFORMATION | Jul. 18, 2019 |
| Cover page. | |
| Document type | 8-K |
| Document period end date | Jul. 18, 2019 |
| Entity registrant name | HONEYWELL INTERNATIONAL INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-8974 |
| Entity Tax Identification Number | 22-2640650 |
| Entity Address, Address Line One | 115 TABOR ROAD |
| Entity Address, City or Town | MORRIS PLAINS |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07950-2546 |
| City Area Code | 973 |
| Local Phone Number | 455-2000 |
| Entity Listings [Line Items] | |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment flag | false |
| Entity central index key | 0000773840 |
| Common Stock [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $1 per share* |
| Trading Symbol | HON |
| NEW YORK STOCK EXCHANGE, INC. | NYSE |
| 0.650% Senior Notes due 2020 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.650% Senior Notes due 2020 |
| Trading Symbol | HON 20 |
| NEW YORK STOCK EXCHANGE, INC. | NYSE |
| 1.300% Senior Notes due 2023 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 1.300% Senior Notes due 2023 |
| Trading Symbol | HON 23A |
| NEW YORK STOCK EXCHANGE, INC. | NYSE |
| 2.250% Senior Notes due 2028 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 2.250% Senior Notes due 2028 |
| Trading Symbol | HON 28A |
| NEW YORK STOCK EXCHANGE, INC. | NYSE |
