17. GOODWILL AND OTHER INTANGIBLE ASSETS – NET

The changes in amounts of goodwill by operating segments were as follows in millions of dollars:


	Agriculture		Construction
	and		and
	Turf		Forestry		Total
Goodwill at October 30, 2016	$	323	$	493	$	816
Acquisitions*		193				193
Translation adjustments and other		5		19		24
Goodwill at October 29, 2017		521		512		1,033
Acquisitions*		71		2,068		2,139
Divestitures*				(18)		(18)
Translation adjustments		(9)		(44)		(53)
Goodwill at October 28, 2018	$	583	$	2,518	$	3,101

* See Note 4.

There were no accumulated impairment losses in the reported periods.

The components of other intangible assets are as follows in millions of dollars:


	Useful Lives*
	(Years)	2018		2017
Amortized intangible assets:
Customer lists and relationships	16	$	542	$	42
Technology, patents, trademarks, and other	18		1,080		139
Total at cost			1,622		181
Less accumulated amortization**			183		86
Total			1,439		95
Unamortized intangible assets:
In-process research and development***			123		123
Other intangible assets - net		$	1,562	$	218

* Weighted-averages

** Accumulated amortization at 2018 and 2017 for customer lists and relationships was $46 million and $17 million and technology, patents, trademarks, and other was $137 million and $69 million, respectively.

***See Note 4.

Other intangible assets are stated at cost less accumulated amortization. The amortization of other intangible assets in 2018, 2017, and 2016 was $100 million, $18 million, and $15 million, respectively. The estimated amortization expense for the next five years is as follows in millions of dollars: 2019 - $117, 2020 - $105, 2021 - $101, 2022 - $100, and 2023 - $98.