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