(14) 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 Turf		and Forestry		Total
Goodwill at October 29, 2017	$	521	$	512	$	1,033
Acquisitions				2,062		2,062
Divestitures				(10)		(10)
Translation adjustments		9		18		27
Goodwill at January 28, 2018	$	530	$	2,582	$	3,112

Goodwill at October 28, 2018	$	583	$	2,518	$	3,101
Translation adjustments and other		2		(55)		(53)
Goodwill at January 27, 2019	$	585	$	2,463	$	3,048

There were no accumulated impairment losses in the reported periods.

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


	Useful Lives *	January 27		October 28		January 28
	(Years)	2019		2018		2018
Amortized intangible assets:
Customer lists and relationships	16	$	538	$	542	$	587
Technology, patents, trademarks, and other	18		1,054		1,080		1,050
Total at cost			1,592		1,622		1,637
Less accumulated amortization **			207		183		100
Total			1,385		1,439		1,537
Unamortized intangible assets:
In-process research and development			123		123		123
Other intangible assets – net		$	1,508	$	1,562	$	1,660

* Weighted-averages

** Accumulated amortization at January 27, 2019, October 28, 2018, and January 28, 2018 for customer lists and relationships totaled $54 million, $46 million, and $21 million and technology, patents, trademarks, and other totaled $153 million, $137 million, and $79 million, respectively.

The amortization of other intangible assets in the first quarter of 2019 and 2018 was $27 million and $13 million, respectively. The estimated amortization expense for the next five years is as follows in millions of dollars: remainder of 2019 – $108, 2020 – $102, 2021 – $99, 2022 – $99, and 2023 – $96.