PENSION AND OTHER POSTRETIREMENT BENEFITS 3 (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Postretirement Benefits [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	$ 0	$ 0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	20,396,000,000	18,995,000,000
Fair value of plan assets at end of year	20,560,000,000	20,396,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	20,560,000,000	20,396,000,000
Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	8,450,000,000	7,307,000,000
Fair value of plan assets at end of year	8,396,000,000	8,450,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	8,396,000,000	8,450,000,000
Honeywell common stock | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	3,319,000,000
Fair value of plan assets at end of year	3,251,000,000	3,319,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	3,251,000,000	3,319,000,000
U.S. equities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	207,000,000
Fair value of plan assets at end of year	229,000,000	207,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	229,000,000	207,000,000
Non-U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,614,000,000
Fair value of plan assets at end of year	824,000,000	1,614,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	824,000,000	1,614,000,000
Short Term investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,314,000,000
Fair value of plan assets at end of year	1,767,000,000	1,314,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,767,000,000	1,314,000,000
Short Term investments [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	596,000,000
Fair value of plan assets at end of year	571,000,000	596,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	571,000,000	596,000,000
Government securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,520,000,000
Fair value of plan assets at end of year	1,373,000,000	1,520,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,373,000,000	1,520,000,000
Government securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	3,105,000,000
Fair value of plan assets at end of year	3,893,000,000	3,105,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	3,893,000,000	3,105,000,000
Corporate bonds | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	10,190,000,000
Fair value of plan assets at end of year	9,588,000,000	10,190,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	9,588,000,000	10,190,000,000
Corporate bonds | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,649,000,000
Fair value of plan assets at end of year	1,681,000,000	1,649,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,681,000,000	1,649,000,000
Mortgage/Asset-backed securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	982,000,000
Fair value of plan assets at end of year	1,072,000,000	982,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,072,000,000	982,000,000
Mortgage/Asset-backed securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	93,000,000
Fair value of plan assets at end of year	79,000,000	93,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	79,000,000	93,000,000
Insurance contracts | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	7,000,000
Fair value of plan assets at end of year	8,000,000	7,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	8,000,000	7,000,000
Insurance contracts | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	142,000,000
Fair value of plan assets at end of year	123,000,000	142,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	123,000,000	142,000,000
Insurance Buy-in contracts [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	767,000,000
Fair value of plan assets at end of year	691,000,000	767,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	691,000,000	767,000,000
Private Funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	65,000,000
Fair value of plan assets at end of year	74,000,000	65,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	74,000,000	65,000,000
Real Estate Funds - Global [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	147,000,000
Fair value of plan assets at end of year	163,000,000	147,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	163,000,000	147,000,000
Direct Private Investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,220,000,000
Fair value of plan assets at end of year	1,336,000,000	1,220,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,336,000,000	1,220,000,000
Real Estate Properties [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	651,000,000
Fair value of plan assets at end of year	843,000,000	651,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	843,000,000	651,000,000
Total plan assets, excluding NAV assets [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	19,203,000,000
Fair value of plan assets at end of year	19,238,000,000	19,203,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	19,238,000,000	19,203,000,000
Total plan assets, excluding NAV assets [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	8,385,000,000
Fair value of plan assets at end of year	8,328,000,000	8,385,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	8,328,000,000	8,385,000,000
NAV assets, Private funds [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,105,000,000
Fair value of plan assets at end of year	1,244,000,000	1,105,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,244,000,000	1,105,000,000
NAV assets, Private funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	18,000,000
Fair value of plan assets at end of year	17,000,000	18,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	17,000,000	18,000,000
NAV assets, Real estate funds [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	26,000,000
Fair value of plan assets at end of year	14,000,000	26,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	14,000,000	26,000,000
NAV assets, Real estate funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	47,000,000
Fair value of plan assets at end of year	51,000,000	47,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	51,000,000	47,000,000
NAV Assets Comingled Funds [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	62,000,000
Fair value of plan assets at end of year	64,000,000	62,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	64,000,000	62,000,000
Fair Value, Inputs, Level 1 [Member] | Honeywell common stock | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	3,319,000,000
Fair value of plan assets at end of year	3,251,000,000	3,319,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	3,251,000,000	3,319,000,000
Fair Value, Inputs, Level 1 [Member] | U.S. equities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	1,000,000	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,000,000	0
Fair Value, Inputs, Level 1 [Member] | Non-U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	66,000,000
Fair value of plan assets at end of year	0	66,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	66,000,000
Fair Value, Inputs, Level 1 [Member] | Short Term investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,314,000,000
Fair value of plan assets at end of year	1,767,000,000	1,314,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,767,000,000	1,314,000,000
Fair Value, Inputs, Level 1 [Member] | Short Term investments [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	596,000,000
Fair value of plan assets at end of year	571,000,000	596,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	571,000,000	596,000,000
Fair Value, Inputs, Level 1 [Member] | Government securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Government securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Corporate bonds | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Corporate bonds | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Mortgage/Asset-backed securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Mortgage/Asset-backed securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Insurance contracts | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Insurance contracts | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Insurance Buy-in contracts [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Private Funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Real Estate Funds - Global [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Direct Private Investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Real Estate Properties [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Total plan assets, excluding NAV assets [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	4,633,000,000
Fair value of plan assets at end of year	5,018,000,000	4,633,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	5,018,000,000	4,633,000,000
Fair Value, Inputs, Level 1 [Member] | Total plan assets, excluding NAV assets [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	662,000,000
Fair value of plan assets at end of year	572,000,000	662,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	572,000,000	662,000,000
Fair Value, Inputs, Level 2 [Member] | Honeywell common stock | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | U.S. equities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	207,000,000
Fair value of plan assets at end of year	228,000,000	207,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	228,000,000	207,000,000
Fair Value, Inputs, Level 2 [Member] | Non-U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,548,000,000
Fair value of plan assets at end of year	824,000,000	1,548,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	824,000,000	1,548,000,000
Fair Value, Inputs, Level 2 [Member] | Short Term investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Short Term investments [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Government securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,520,000,000
Fair value of plan assets at end of year	1,373,000,000	1,520,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,373,000,000	1,520,000,000
Fair Value, Inputs, Level 2 [Member] | Government securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	3,105,000,000
Fair value of plan assets at end of year	3,893,000,000	3,105,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	3,893,000,000	3,105,000,000
Fair Value, Inputs, Level 2 [Member] | Corporate bonds | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	10,190,000,000
Fair value of plan assets at end of year	9,588,000,000	10,190,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	9,588,000,000	10,190,000,000
Fair Value, Inputs, Level 2 [Member] | Corporate bonds | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,649,000,000
Fair value of plan assets at end of year	1,681,000,000	1,649,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,681,000,000	1,649,000,000
Fair Value, Inputs, Level 2 [Member] | Mortgage/Asset-backed securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	982,000,000
Fair value of plan assets at end of year	1,072,000,000	982,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,072,000,000	982,000,000
Fair Value, Inputs, Level 2 [Member] | Mortgage/Asset-backed securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	93,000,000
Fair value of plan assets at end of year	79,000,000	93,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	79,000,000	93,000,000
Fair Value, Inputs, Level 2 [Member] | Insurance contracts | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	7,000,000
Fair value of plan assets at end of year	8,000,000	7,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	8,000,000	7,000,000
Fair Value, Inputs, Level 2 [Member] | Insurance contracts | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	142,000,000
Fair value of plan assets at end of year	123,000,000	142,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	123,000,000	142,000,000
Fair Value, Inputs, Level 2 [Member] | Insurance Buy-in contracts [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Private Funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	36,000,000
Fair value of plan assets at end of year	41,000,000	36,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	41,000,000	36,000,000
Fair Value, Inputs, Level 2 [Member] | Real Estate Funds - Global [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Direct Private Investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Real Estate Properties [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Total plan assets, excluding NAV assets [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	12,699,000,000
Fair value of plan assets at end of year	12,041,000,000	12,699,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	12,041,000,000	12,699,000,000
Fair Value, Inputs, Level 2 [Member] | Total plan assets, excluding NAV assets [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	6,780,000,000
Fair value of plan assets at end of year	6,869,000,000	6,780,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	6,869,000,000	6,780,000,000
Fair Value, Inputs, Level 3 [Member] | Honeywell common stock | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | U.S. equities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Non-U.S. equities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Short Term investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Short Term investments [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Government securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Government securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Corporate bonds | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Corporate bonds | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Mortgage/Asset-backed securities | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Mortgage/Asset-backed securities | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Insurance contracts | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Insurance contracts | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Insurance Buy-in contracts [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	767,000,000	0
Relating to assets still held at year-end	(76,000,000)	0
Relating to assets sold during the year	0	0
Purchases	0	767,000,000
Sales and settlements	0	0
Fair value of plan assets at end of year	691,000,000	767,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	691,000,000	767,000,000
Fair Value, Inputs, Level 3 [Member] | Private Funds [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	29,000,000	34,000,000
Relating to assets still held at year-end	4,000,000	(5,000,000)
Relating to assets sold during the year	0	0
Purchases	0	0
Sales and settlements	0	0
Fair value of plan assets at end of year	33,000,000	29,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	33,000,000	29,000,000
Fair Value, Inputs, Level 3 [Member] | Real Estate Funds - Global [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	147,000,000	150,000,000
Relating to assets still held at year-end	23,000,000	(3,000,000)
Relating to assets sold during the year	4,000,000	0
Purchases	0	0
Sales and settlements	(11,000,000)	0
Fair value of plan assets at end of year	163,000,000	147,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	163,000,000	147,000,000
Fair Value, Inputs, Level 3 [Member] | Direct Private Investments [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,220,000,000	950,000,000
Relating to assets still held at year-end	11,000,000	100,000,000
Relating to assets sold during the year	174,000,000	53,000,000
Purchases	194,000,000	221,000,000
Sales and settlements	(263,000,000)	(104,000,000)
Fair value of plan assets at end of year	1,336,000,000	1,220,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	1,336,000,000	1,220,000,000
Fair Value, Inputs, Level 3 [Member] | Real Estate Properties [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	651,000,000	619,000,000
Relating to assets still held at year-end	96,000,000	(4,000,000)
Relating to assets sold during the year	0	0
Purchases	99,000,000	59,000,000
Sales and settlements	(3,000,000)	(23,000,000)
Fair value of plan assets at end of year	843,000,000	651,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	843,000,000	651,000,000
Fair Value, Inputs, Level 3 [Member] | Total plan assets, excluding NAV assets [Member] | UNITED STATES
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	1,871,000,000
Fair value of plan assets at end of year	2,179,000,000	1,871,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	2,179,000,000	1,871,000,000
Fair Value, Inputs, Level 3 [Member] | Total plan assets, excluding NAV assets [Member] | Foreign Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets at beginning of year	943,000,000
Fair value of plan assets at end of year	887,000,000	943,000,000
Defined Benefit Plan Disclosure [Abstract]
Fair value of pension plan assets	$ 887,000,000	$ 943,000,000