PENSION AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Pension Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 |
Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | $ 17,005 | $ 20,560 | $ 20,396 |
Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 5,304 | 8,396 | 8,450 |
Honeywell common stock | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 3,336 | 3,251 | |
Honeywell common stock | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 3,336 | 3,251 | |
Honeywell common stock | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Honeywell common stock | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
U.S. equities | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 6 | 0 | |
U.S. equities | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 144 | 229 | |
U.S. equities | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 6 | 0 | |
U.S. equities | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 2 | 1 | |
U.S. equities | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
U.S. equities | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 142 | 228 | |
U.S. equities | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
U.S. equities | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Short-term investments | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 855 | 1,767 | |
Short-term investments | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 341 | 571 | |
Short-term investments | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 855 | 1,767 | |
Short-term investments | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 341 | 571 | |
Short-term investments | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Short-term investments | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Short-term investments | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Short-term investments | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Government securities | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,492 | 1,373 | |
Government securities | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 2,045 | 3,893 | |
Government securities | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Government securities | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Government securities | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,492 | 1,373 | |
Government securities | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 2,045 | 3,893 | |
Government securities | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Government securities | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Corporate bonds | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 6,632 | 9,588 | |
Corporate bonds | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,031 | 1,681 | |
Corporate bonds | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Corporate bonds | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Corporate bonds | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 6,632 | 9,588 | |
Corporate bonds | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,031 | 1,681 | |
Corporate bonds | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Corporate bonds | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,119 | 1,072 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 31 | 79 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,119 | 1,072 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 31 | 79 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Mortgage/Asset-backed securities | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance contracts | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 8 | 8 | |
Insurance contracts | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 115 | 123 | |
Insurance contracts | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance contracts | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance contracts | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 8 | 8 | |
Insurance contracts | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 115 | 123 | |
Insurance contracts | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance contracts | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Direct private investments | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,284 | 1,336 | 1,220 |
Direct private investments | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,284 | 1,336 | |
Direct private investments | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Direct private investments | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Direct private investments | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,284 | 1,336 | |
Real estate properties | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,005 | 843 | 651 |
Real estate properties | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,005 | 843 | |
Real estate properties | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Real estate properties | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Real estate properties | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,005 | 843 | |
Total | Pension ongoing income—non-service | Level 1 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 4,197 | 5,018 | |
Total | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 343 | 572 | |
Total | Pension ongoing income—non-service | Level 2 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 9,251 | 12,041 | |
Total | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 3,792 | 6,869 | |
Total | Pension ongoing income—non-service | Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 2,289 | 2,179 | |
Total | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,116 | 887 | |
Total | Pension ongoing income—non-service | Fair Value, Inputs, Level 1, Level 2, and Level 3 | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 15,737 | 19,238 | |
Total | Pension ongoing income—non-service | Fair Value, Inputs, Level 1, Level 2, and Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 5,251 | 8,328 | |
Private funds | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 1,258 | 1,244 | |
Private funds | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 10 | 17 | |
Real estate funds | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 10 | 14 | |
Real estate funds | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 43 | 51 | |
Commingled funds | Pension ongoing income—non-service | U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 64 | |
Non-U.S. equities | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 374 | 824 | |
Non-U.S. equities | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Non-U.S. equities | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 374 | 824 | |
Non-U.S. equities | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance buy-in contracts | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 950 | 691 | 767 |
Insurance buy-in contracts | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 950 | 691 | |
Insurance buy-in contracts | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance buy-in contracts | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Insurance buy-in contracts | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 950 | 691 | |
Private funds | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 36 | 33 | 29 |
Private funds | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 90 | 74 | |
Private funds | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Private funds | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 54 | 41 | |
Private funds | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 36 | 33 | |
Real estate funds | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 130 | 163 | $ 147 |
Real estate funds | Pension ongoing income—non-service | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 130 | 163 | |
Real estate funds | Pension ongoing income—non-service | Level 1 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Real estate funds | Pension ongoing income—non-service | Level 2 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | 0 | 0 | |
Real estate funds | Pension ongoing income—non-service | Level 3 | Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of pension plan assets | $ 130 | $ 163 | |