Goodwill And Other Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure [Text Block]

. GOODWILL AND OTHER INTANGIBLE ASSETS

Core deposit and other intangible assets and related accumulated amortization are as follows at December 31:

	Gross carrying amount				Accumulated amortization				Net carrying amount
(In millions)	2019		2018		2019		2018		2019		2018
Core deposit intangibles	$	167	$	167	$	(167)	$	(166)	$	—	$	1
Customer relationships and other intangibles	28		28		(28)		(28)		—		—
Total	$	195	$	195	$	(195)	$	(194)	$	—	$	1

Changes in the carrying amount of goodwill for operating segments with goodwill are as follows:

(In millions)	Zions Bank		CB&T		Amegy		Consolidated Bank
Balance at December 31, 2017	$	20	$	379	$	615	$	1,014
Impairment losses	—		—		—		—
Balance at December 31, 2018	20		379		615		1,014
Impairment losses	—		—		—		—
Balance at December 31, 2019	$	20	$	379	$	615	$	1,014

A bank-wide annual impairment test is conducted as of October 1 of each year and updated on a more frequent basis when events or circumstances indicate that impairment could have taken place. Results of the testing for 2019 and 2018 concluded that no impairment was present in any of the operating segments.