GOODWILL AND OTHER INTANGIBLES-NET

12 Months Ended

Dec. 31, 2019

Goodwill And Other Intangible Assets Net [Abstract]

Goodwill and Other Intangible Assets, Net

Goodwill and Other Intangible Assets—Net

The following table summarizes the change in the carrying amount of goodwill for the years ended December 31, 2019 and 2018 by segment.

	December 31, 2018		Acquisitions/ Divestitures			Currency Translation Adjustment			December 31, 2019
Aerospace	$	2,258	$	—		$	8		$	2,266
Honeywell Building Technologies	3,238		(1		)	(22		)	3,215
Performance Materials and Technologies	5,147		—			(42		)	5,105
Safety and Productivity Solutions	4,903		75			(1		)	4,977
	$	15,546	$	74		$	(57	)	$	15,563

Other intangible assets are comprised of:

	December 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Determinable life intangibles:
Patents and technology	$	2,060	$	(1,481	)	$	579	$	1,996	$	(1,332	)	$	664
Customer relationships	3,769		(1,766		)	2,003		3,785		(1,510		)	2,275
Trademarks	317		(228		)	89		326		(206		)	120
Other	297		(262		)	35		349		(299		)	50
	6,443		(3,737		)	2,706		6,456		(3,347		)	3,109
Indefinite life intangibles:
Trademarks	1,028		—			1,028		1,030		—			1,030
	$	7,471	$	(3,737	)	$	3,734	$	7,486	$	(3,347	)	$	4,139

Intangible assets amortization expense was $415 million, $395 million, and $398 million in 2019, 2018, 2017. Estimated intangible asset amortization expense for each of the next five years approximates $355 million in 2020, $317 million in 2021, $293 million in 2022, $256 million in 2023, and $234 million in 2024.