COMMITMENTS AND CONTINGENCIES 8 (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Bendix Asbestos Loss Contingency Liability [Member] | Garrett [Member]
Loss Contingency Indemnification Agreements Disclosure [Line Items]
Spinoff Indemnification Agreement Description	In conjunction with the Garrett spin-off, the Company entered into an indemnification and reimbursement agreement with a Garrett subsidiary, pursuant to which Garrett’s subsidiary will have an obligation to make cash payments to Honeywell in amounts equal to (i) 90% of Honeywell’s asbestos-related liability payments primarily related to the Bendix business in the United States, as well as certain environmental-related liability payments and accounts payable and non-United States asbestos-related liability payments, in each case related to legacy elements of the Garrett business, including the legal costs of defending and resolving such liabilities, less (ii) 90% of Honeywell’s net insurance receipts and, as may be applicable, certain other recoveries associated with such liabilities. The amount payable to Honeywell in respect of such liabilities arising in any given year will be subject to a cap of approximately Euro 150 million (equivalent to $175 million at the time the indemnification agreement was entered into). The obligation will continue until the earlier of December 31, 2048, or December 31 of the third consecutive year during which the annual indemnification obligation has been less than the Euro equivalent, at the fixed exchange rate at time of the indemnification agreement, of $25 million. Reimbursements associated with this indemnification agreement were $42 million in 2018. As the Company records the accruals for matters covered by the indemnification agreement, a corresponding receivable from Garrett is recorded for 90 percent of that accrual as determined by the terms of the agreement. In 2018 subsequent to the spin-off, the Company recorded a reversal to the receivable for $17 million in the fourth quarter of 2018. As of December 31, 2018, Other Current Assets and Other Assets includes $171 million and $1,058 million representing the short-term and long-term portion of the receivable amount due from Garrett under the indemnification and reimbursement agreement.
Reimbursements From Indemnification Agreement	$ 42
Reimbursement Receivable Indemnification Agreement	(17)
Indemnity Receivable Recorded in Other Current Assets	171
Indemnity Receivable Recorded in Other Assets	$ 1,058
Environmental Liabilities [Member] | Resideo [Member]
Loss Contingency Indemnification Agreements Disclosure [Line Items]
Spinoff Indemnification Agreement Description	In conjunction with the Resideo spin-off, the Company entered into an indemnification and reimbursement agreement with a Resideo subsidiary, pursuant to which Resideo’s subsidiary has an ongoing obligation to make cash payments to Honeywell in amounts equal to 90 percent of Honeywell’s annual net spending for environmental matters at certain sites as defined in the agreement. The amount payable to Honeywell in any given year is subject to a cap of $140 million, and the obligation will continue until the earlier of December 31, 2043, or December 31 of the third consecutive year during which the annual payment obligation has been less than $25 million. Reimbursements associated with this indemnification agreement were $25 million in 2018 and offset operating cash outflows incurred by the Company. As the Company records the accruals for environmental matters deemed probable and reasonably estimable related to the sites covered by the indemnification agreement, a corresponding receivable from Resideo for 90 percent of that accrual is also recorded. This receivable amount recorded in 2018 subsequent to the spin-off was $50 million. As of December 31, 2018, Other Current Assets and Other Assets includes $140 million and $476 million representing the short-term and long-term portion of the receivable amount due from Resideo under the indemnification and reimbursement agreement.
Reimbursements From Indemnification Agreement	$ 25
Reimbursement Receivable Indemnification Agreement	50
Indemnity Receivable Recorded in Other Current Assets	140
Indemnity Receivable Recorded in Other Assets	$ 476