CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 5,610,000,000	$ 4,865,000,000	$ 6,230,000,000
Less: Net income attributable to the noncontrolling interest	68,000,000	86,000,000	87,000,000
Net income attributable to Honeywell	5,542,000,000	4,779,000,000	6,143,000,000
Adjustments to reconcile net income attributable to Honeywell to net cash provided by operating activities [Abstract]
Depreciation	674,000,000	644,000,000	673,000,000
Amortization	549,000,000	358,000,000	415,000,000
Loss (gain) on sale of non-strategic businesses and assets	(102,000,000)	3,000,000	1,000,000
Repositioning and other charges	569,000,000	575,000,000	546,000,000
Net payments for repositioning and other charges	(692,000,000)	(833,000,000)	(376,000,000)
Pension and other postretirement income	(1,114,000,000)	(798,000,000)	(516,000,000)
Pension and other postretirement benefit payments	(43,000,000)	(47,000,000)	(78,000,000)
Stock compensation expense	217,000,000	168,000,000	153,000,000
Deferred income taxes	178,000,000	(175,000,000)	179,000,000
Reimbursement receivables charge	0	509,000,000	0
Other	(28,000,000)	(338,000,000)	(287,000,000)
Changes in assets and liabilities, net of the effects of acquisitions and divestitures: [Abstract]
Accounts receivable	(8,000,000)	669,000,000	11,000,000
Inventories	(685,000,000)	(67,000,000)	(100,000,000)
Other current assets	(276,000,000)	191,000,000	(430,000,000)
Accounts payable	744,000,000	15,000,000	118,000,000
Accrued liabilities	513,000,000	555,000,000	445,000,000
Net cash provided by (used for) operating activities	6,038,000,000	6,208,000,000	6,897,000,000
Cash flows from investing activities: [Abstract]
Expenditures for property, plant and equipment	(895,000,000)	(906,000,000)	(839,000,000)
Proceeds from disposals of property, plant and equipment	27,000,000	57,000,000	43,000,000
Increase in investments	(2,373,000,000)	(3,236,000,000)	(4,253,000,000)
Decrease in investments	2,525,000,000	3,508,000,000	4,464,000,000
Receipts from Garrett Motion Inc.	586,000,000	0	0
Receipts (payments) from settlements of derivative contracts	192,000,000	(149,000,000)	102,000,000
Cash paid for acquisitions, net of cash acquired	(1,326,000,000)	(261,000,000)	(50,000,000)
Proceeds from sales of businesses, net of fees paid	203,000,000	0	0
Net cash provided by (used for) investing activities	(1,061,000,000)	(987,000,000)	(533,000,000)
Cash flows from financing activities: [Abstract]
Proceeds from issuance of commercial paper and other short-term borrowings	5,194,000,000	10,474,000,000	14,199,000,000
Payments of commercial paper and other short-term borrowings	(5,190,000,000)	(10,400,000,000)	(14,199,000,000)
Proceeds from issuance of common stock	229,000,000	393,000,000	498,000,000
Proceeds from issuance of long-term debt	2,517,000,000	10,125,000,000	2,726,000,000
Payments of long-term debt	(4,917,000,000)	(4,308,000,000)	(2,903,000,000)
Repurchases of common stock	(3,380,000,000)	(3,714,000,000)	(4,400,000,000)
Cash dividends paid	(2,626,000,000)	(2,592,000,000)	(2,442,000,000)
Other	(81,000,000)	(59,000,000)	(79,000,000)
Net cash provided by (used for) financing activities	(8,254,000,000)	(81,000,000)	(6,600,000,000)
Effect of foreign exchange rate changes on cash and cash equivalents	(39,000,000)	68,000,000	16,000,000
Net increase (decrease) in cash and cash equivalents	(3,316,000,000)	5,208,000,000	(220,000,000)
Cash and cash equivalents at beginning of period	14,275,000,000	9,067,000,000	9,287,000,000
Cash and cash equivalents at end of period	$ 10,959,000,000	$ 14,275,000,000	$ 9,067,000,000