Goodwill and Intangible Assets

The following table presents the net carrying amount of goodwill allocated by reporting unit, and changes during 2018:



(In millions)	Balance at December 31, 2017		Acquisitions		Divestitures		Translation			Balance at December 31, 2018
Americas	$	91	$	—	$	—	$	—		$	91
Europe, Middle East and Africa	437		2		—		(24		)	415
Asia Pacific	67		—		—		(4		)	63
	$	595	$	2	$	—	$	(28	)	$	569

The following table presents the net carrying amount of goodwill allocated by reporting unit, and changes during 2017:



(In millions)	Balance at December 31, 2016		Acquisitions		Divestitures		Translation		Balance at December 31, 2017
Americas	$	91	$	—	$	—	$	—	$	91
Europe, Middle East and Africa	383		1		—		53		437
Asia Pacific	61		1		—		5		67
	$	535	$	2	$	—	$	58	$	595

The following table presents information about intangible assets:



	2018							2017
(In millions)	Gross Carrying Amount⁽¹⁾		Accumulated Amortization⁽¹⁾			Net Carrying Amount		Gross Carrying Amount⁽¹⁾		Accumulated Amortization⁽¹⁾			Net Carrying Amount
Intangible assets with indefinite lives	$	124	$	(6	)	$	118	$	124	$	(6	)	$	118
Trademarks and patents	23		(19		)	4		26		(21		)	5
Other intangible assets	23		(9		)	14		24		(8		)	16
	$	170	$	(34	)	$	136	$	174	$	(35	)	$	139


(1)	Includes impact of foreign currency translation.

Intangible assets are primarily comprised of the rights to use the Dunlop brand name and related trademarks and certain other brand names and trademarks.

Amortization expense for intangible assets totaled $2 million in both 2018 and 2017, and $1 million in 2016. We estimate that annual amortization expense related to intangible assets will be approximately $2 million in 2019 through 2021, and $1 million in 2022 and 2023. The weighted average remaining amortization period is approximately 21 years.

Our annual impairment analyses for 2018, 2017 and 2016 indicated no impairment of goodwill or intangible assets with indefinite lives. In addition, there were no events or circumstances that indicated the impairment tests should be re-performed for goodwill or for intangible assets with indefinite lives for any reporting unit at December 31, 2018.