Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

The following table presents the changes in the carrying amount of goodwill for each of the three years in the period ended December 31, 2018:



	General rentals			Trench, power and fluid solutions			Total
Balance at January 1, 2016 (1)	$	2,786		$	457		$	3,243
Goodwill related to acquisitions (2)	5			4			9
Foreign currency translation and other adjustments	6			2			8
Balance at December 31, 2016 (1)	2,797			463			3,260
Goodwill related to acquisitions (2) (3)	797			8			805
Foreign currency translation and other adjustments	13			4			17
Balance at December 31, 2017 (1)	3,607			475			4,082
Goodwill related to acquisitions (2) (3)	752			247			999
Foreign currency translation and other adjustments	(17		)	(6		)	(23		)
Balance at December 31, 2018 (1)	$	4,342		$	716		$	5,058

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(1)	The total carrying amount of goodwill for all periods in the table above is reflected net of $1.557 billion of accumulated impairment charges, which were primarily recorded in our general rentals segment.


(2)	Includes goodwill adjustments for the effect on goodwill of changes to net assets acquired during the measurement period, which were not significant to our previously reported operating results or financial condition.

(3)

For additional detail on the acquisitions of NES, Neff, BakerCorp and BlueLine in April 2017, October 2017, July 2018 and October 2018, respectively, which accounted for most of the 2017 and 2018 goodwill related to acquisitions, see note 4 to our consolidated financial statements.

Components of intangible assets

Other intangible assets were comprised of the following at December 31, 2018 and 2017:



	December 31, 2018
	Weighted-Average Remaining Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Amount
Non-compete agreements	31 months	$	24	$	16	$	8
Customer relationships	7 years	$	2,148	$	1,076	$	1,072
Trade names and associated trademarks	5 years	$	5	$	1	$	4



	December 31, 2017
	Weighted-Average Remaining Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Amount
Non-compete agreements	31 months	$	71	$	62	$	9
Customer relationships	9 years	$	1,750	$	884	$	866

Our other intangibles assets, net at December 31, 2018 include the following assets associated with the acquisitions of BakerCorp and BlueLine discussed in note 4 to our consolidated financial statements. No residual value has been assigned to these assets which are being amortized using the sum of the years' digits method, which we believe best reflects the estimated pattern in which the economic benefits will be consumed.



	December 31, 2018
	Weighted-Average Remaining Amortization Period	Net Carrying Amount
BakerCorp:
Customer relationships	7 years	$	149
Trade names and associated trademarks	5 years	$	4
BlueLine:
Customer relationships	5 years	$	217

Estimated future amortization expense of intangible assets

As of December 31, 2018, estimated amortization expense for other intangible assets for each of the next five years and thereafter was as follows:



2019	$	268
2020	232
2021	190
2022	149
2023	106
Thereafter	139
Total	$	1,084