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PENSION AND OTHER POSTRETIREMENT BENEFITS 3 (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Other Postretirement Benefits [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 $ 0 $ 0
United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 18,985,000,000 16,814,000,000    
Fair value of plan assets at end of year 17,109,000,000 18,985,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 18,985,000,000 16,814,000,000 17,109,000,000 18,985,000,000
Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 7,151,000,000 6,120,000,000    
Fair value of plan assets at end of year 6,481,000,000 7,151,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 7,151,000,000 6,120,000,000 6,481,000,000 7,151,000,000
Honeywell common stock | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,832,000,000      
Fair value of plan assets at end of year 2,438,000,000 2,832,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 2,438,000,000 2,832,000,000 2,438,000,000 2,832,000,000
U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 3,573,000,000      
Fair value of plan assets at end of year 1,365,000,000 3,573,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,365,000,000 3,573,000,000 1,365,000,000 3,573,000,000
U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 573,000,000      
Fair value of plan assets at end of year 429,000,000 573,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 429,000,000 573,000,000 429,000,000 573,000,000
Non-U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,631,000,000      
Fair value of plan assets at end of year 753,000,000 2,631,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 753,000,000 2,631,000,000 753,000,000 2,631,000,000
Non-U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,801,000,000      
Fair value of plan assets at end of year 1,356,000,000 2,801,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 2,801,000,000 2,801,000,000 1,356,000,000 2,801,000,000
Real estate investment trusts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 265,000,000      
Fair value of plan assets at end of year 244,000,000 265,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 244,000,000 265,000,000 244,000,000 265,000,000
Short term investments | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 919,000,000      
Fair value of plan assets at end of year 877,000,000 919,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 877,000,000 919,000,000 877,000,000 919,000,000
Short term investments | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 238,000,000      
Fair value of plan assets at end of year 189,000,000 238,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 238,000,000 238,000,000 189,000,000 238,000,000
Government securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 428,000,000      
Fair value of plan assets at end of year 993,000,000 428,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 993,000,000 428,000,000 993,000,000 428,000,000
Government securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 1,685,000,000      
Fair value of plan assets at end of year 2,572,000,000 1,685,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,685,000,000 1,685,000,000 2,572,000,000 1,685,000,000
Corporate bonds | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 5,052,000,000      
Fair value of plan assets at end of year 6,824,000,000 5,052,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 6,824,000,000 5,052,000,000 6,824,000,000 5,052,000,000
Corporate bonds | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 1,364,000,000      
Fair value of plan assets at end of year 1,468,000,000 1,364,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,364,000,000 1,364,000,000 1,468,000,000 1,364,000,000
Mortgage/Asset-backed securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 742,000,000      
Fair value of plan assets at end of year 1,032,000,000 742,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,032,000,000 742,000,000 1,032,000,000 742,000,000
Mortgage/Asset-backed securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 47,000,000      
Fair value of plan assets at end of year 60,000,000 47,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 47,000,000 47,000,000 60,000,000 47,000,000
Insurance contracts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 8,000,000      
Fair value of plan assets at end of year 8,000,000 8,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 8,000,000 8,000,000 8,000,000 8,000,000
Insurance contracts | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 157,000,000      
Fair value of plan assets at end of year 137,000,000 157,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 157,000,000 157,000,000 137,000,000 157,000,000
Private Funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 52,000,000      
Fair value of plan assets at end of year 46,000,000 52,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 46,000,000 52,000,000 46,000,000 52,000,000
Real Estate Funds - Global [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 149,000,000      
Fair value of plan assets at end of year 144,000,000 149,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 149,000,000 149,000,000 144,000,000 149,000,000
Direct Private Investments [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 752,000,000      
Fair value of plan assets at end of year 829,000,000 752,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 829,000,000 752,000,000 829,000,000 752,000,000
Real Estate Properties [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 597,000,000      
Fair value of plan assets at end of year 657,000,000 597,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 657,000,000 597,000,000 657,000,000 597,000,000
Total plan assets, excluding NAV assets [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 17,799,000,000      
Fair value of plan assets at end of year 16,020,000,000 17,799,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 16,020,000,000 17,799,000,000 16,020,000,000 17,799,000,000
Total plan assets, excluding NAV assets [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 7,066,000,000      
Fair value of plan assets at end of year 6,401,000,000 7,066,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 7,066,000,000 7,066,000,000 6,401,000,000 7,066,000,000
NAV assets, Private funds [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 901,000,000      
Fair value of plan assets at end of year 931,000,000 901,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 931,000,000 901,000,000 931,000,000 901,000,000
NAV assets, Private funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 29,000,000      
Fair value of plan assets at end of year 26,000,000 29,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 26,000,000 29,000,000 26,000,000 29,000,000
NAV assets, Real estate funds [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 84,000,000      
Fair value of plan assets at end of year 56,000,000 84,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 56,000,000 84,000,000 56,000,000 84,000,000
NAV assets, Real estate funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 56,000,000      
Fair value of plan assets at end of year 54,000,000 56,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 56,000,000 56,000,000 54,000,000 56,000,000
NAV assets, Hedge funds [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 20,000,000      
Fair value of plan assets at end of year 1,000,000 20,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,000,000 20,000,000 1,000,000 20,000,000
NAV Assets Comingled Funds [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 181,000,000      
Fair value of plan assets at end of year 101,000,000 181,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 101,000,000 181,000,000 $ 101,000,000 181,000,000
Equity Securities [Member] | Minimum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     35.00%  
Equity Securities [Member] | Maximum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     50.00%  
Fixed Income Securities and Cash [Member] | Minimum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     45.00%  
Fixed Income Securities and Cash [Member] | Maximum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     70.00%  
Real Estate [Member] | Minimum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     5.00%  
Real Estate [Member] | Maximum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     10.00%  
Other Than Securities Investment [Member] | Minimum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     10.00%  
Other Than Securities Investment [Member] | Maximum [Member]        
Defined Benefit Plan Plans With Benefit Obligations In Excess of Plan Assets Paragraph Details [Line Items]        
Target allocations percentage     20.00%  
Quoted Prices in Active Markets for Identical Assets (Level 1) | Honeywell common stock | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,832,000,000      
Fair value of plan assets at end of year 2,438,000,000 2,832,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 2,438,000,000 2,832,000,000 $ 2,438,000,000 2,832,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 3,573,000,000      
Fair value of plan assets at end of year 1,365,000,000 3,573,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,365,000,000 3,573,000,000 1,365,000,000 3,573,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 420,000,000      
Fair value of plan assets at end of year 297,000,000 420,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 420,000,000 420,000,000 297,000,000 420,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,618,000,000      
Fair value of plan assets at end of year 753,000,000 2,618,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 753,000,000 2,618,000,000 753,000,000 2,618,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 99,000,000      
Fair value of plan assets at end of year 44,000,000 99,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 99,000,000 99,000,000 44,000,000 99,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate investment trusts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 265,000,000      
Fair value of plan assets at end of year 244,000,000 265,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 244,000,000 265,000,000 244,000,000 265,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Short term investments | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 919,000,000      
Fair value of plan assets at end of year 877,000,000 919,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 877,000,000 919,000,000 877,000,000 919,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Short term investments | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 238,000,000      
Fair value of plan assets at end of year 189,000,000 238,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 238,000,000 238,000,000 189,000,000 238,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Government securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Government securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage/Asset-backed securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage/Asset-backed securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Insurance contracts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Insurance contracts | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Private Funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate Funds - Global [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Direct Private Investments [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Real Estate Properties [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Total plan assets, excluding NAV assets [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 10,207,000,000      
Fair value of plan assets at end of year 5,677,000,000 10,207,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 5,677,000,000 10,207,000,000 5,677,000,000 10,207,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Total plan assets, excluding NAV assets [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 757,000,000      
Fair value of plan assets at end of year 530,000,000 757,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 757,000,000 757,000,000 530,000,000 757,000,000
Significant Observable Inputs (Level 2) | Honeywell common stock | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 153,000,000      
Fair value of plan assets at end of year 132,000,000 153,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 153,000,000 153,000,000 132,000,000 153,000,000
Significant Observable Inputs (Level 2) | Non-U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 13,000,000      
Fair value of plan assets at end of year 0 13,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 0 13,000,000 0 13,000,000
Significant Observable Inputs (Level 2) | Non-U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 2,702,000,000      
Fair value of plan assets at end of year 1,312,000,000 2,702,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 2,702,000,000 2,702,000,000 1,312,000,000 2,702,000,000
Significant Observable Inputs (Level 2) | Real estate investment trusts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Short term investments | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Short term investments | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Government securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 428,000,000      
Fair value of plan assets at end of year 993,000,000 428,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 993,000,000 428,000,000 993,000,000 428,000,000
Significant Observable Inputs (Level 2) | Government securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 1,685,000,000      
Fair value of plan assets at end of year 2,572,000,000 1,685,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,685,000,000 1,685,000,000 2,572,000,000 1,685,000,000
Significant Observable Inputs (Level 2) | Corporate bonds | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 5,052,000,000      
Fair value of plan assets at end of year 6,824,000,000 5,052,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 6,824,000,000 5,052,000,000 6,824,000,000 5,052,000,000
Significant Observable Inputs (Level 2) | Corporate bonds | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 1,364,000,000      
Fair value of plan assets at end of year 1,468,000,000 1,364,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,364,000,000 1,364,000,000 1,468,000,000 1,364,000,000
Significant Observable Inputs (Level 2) | Mortgage/Asset-backed securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 742,000,000      
Fair value of plan assets at end of year 1,032,000,000 742,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,032,000,000 742,000,000 1,032,000,000 742,000,000
Significant Observable Inputs (Level 2) | Mortgage/Asset-backed securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 47,000,000      
Fair value of plan assets at end of year 60,000,000 47,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 47,000,000 47,000,000 60,000,000 47,000,000
Significant Observable Inputs (Level 2) | Insurance contracts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 8,000,000      
Fair value of plan assets at end of year 8,000,000 8,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 8,000,000 8,000,000 8,000,000 8,000,000
Significant Observable Inputs (Level 2) | Insurance contracts | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 157,000,000      
Fair value of plan assets at end of year 137,000,000 157,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 137,000,000 157,000,000 137,000,000 157,000,000
Significant Observable Inputs (Level 2) | Private Funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 21,000,000      
Fair value of plan assets at end of year 12,000,000 21,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 12,000,000 21,000,000 12,000,000 21,000,000
Significant Observable Inputs (Level 2) | Real Estate Funds - Global [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Direct Private Investments [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Real Estate Properties [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Observable Inputs (Level 2) | Total plan assets, excluding NAV assets [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 6,243,000,000      
Fair value of plan assets at end of year 8,857,000,000 6,243,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 8,857,000,000 6,243,000,000 8,857,000,000 6,243,000,000
Significant Observable Inputs (Level 2) | Total plan assets, excluding NAV assets [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 6,129,000,000      
Fair value of plan assets at end of year 5,693,000,000 6,129,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 6,129,000,000 6,129,000,000 5,693,000,000 6,129,000,000
Significant Unobservable Inputs (Level 3) | Honeywell common stock | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Non-U.S. equities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Non-U.S. equities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Real estate investment trusts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Short term investments | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Short term investments | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Government securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Government securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Corporate bonds | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Corporate bonds | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Mortgage/Asset-backed securities | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Mortgage/Asset-backed securities | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Insurance contracts | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Insurance contracts | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [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 0 0
Significant Unobservable Inputs (Level 3) | Private Funds [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 31,000,000 23,000,000    
Relating to assets still held at year-end     1,000,000 5,000,000
Relating to assets sold during the year 0 0    
Purchases 2,000,000 6,000,000    
Sales and settlements 0 (3,000,000)    
Fair value of plan assets at end of year 34,000,000 31,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 31,000,000 31,000,000 34,000,000 31,000,000
Significant Unobservable Inputs (Level 3) | Real Estate Funds - Global [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 149,000,000 124,000,000    
Relating to assets still held at year-end     (4,000,000) 26,000,000
Relating to assets sold during the year 0 0    
Purchases 0 0    
Sales and settlements (1,000,000) (1,000,000)    
Fair value of plan assets at end of year 144,000,000 149,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 144,000,000 124,000,000 144,000,000 149,000,000
Significant Unobservable Inputs (Level 3) | Direct Private Investments [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 752,000,000 609,000,000    
Relating to assets still held at year-end     36,000,000 33,000,000
Relating to assets sold during the year 65,000,000 51,000,000    
Purchases 95,000,000 148,000,000    
Sales and settlements (119,000,000) (89,000,000)    
Fair value of plan assets at end of year 829,000,000 752,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 829,000,000 752,000,000 829,000,000 752,000,000
Significant Unobservable Inputs (Level 3) | Real Estate Properties [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 597,000,000 664,000,000    
Relating to assets still held at year-end     33,000,000 2,000,000
Relating to assets sold during the year 2,000,000 31,000,000    
Purchases 47,000,000 18,000,000    
Sales and settlements (22,000,000) (118,000,000)    
Fair value of plan assets at end of year 657,000,000 597,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 657,000,000 597,000,000 657,000,000 597,000,000
Significant Unobservable Inputs (Level 3) | Total plan assets, excluding NAV assets [Member] | United States [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 1,349,000,000      
Fair value of plan assets at end of year 1,486,000,000 1,349,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets 1,486,000,000 1,349,000,000 1,486,000,000 1,349,000,000
Significant Unobservable Inputs (Level 3) | Total plan assets, excluding NAV assets [Member] | Non-U.S. Pension Plans, Defined Benefit [Member]        
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Roll Forward]        
Fair value of plan assets at beginning of year 180,000,000      
Fair value of plan assets at end of year 178,000,000 180,000,000    
Defined Benefit Plan Disclosure [Abstract]        
Fair value of pension plan assets $ 178,000,000 $ 180,000,000 $ 178,000,000 $ 180,000,000