GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill by business segment

A rollforward of goodwill by business segment for the years ended December 31, 2018 and 2017, is presented in the table below:

	Consumer &
	Business			Commercial			Vehicle				Treasury/		Huntington
(dollar amounts in millions)	Banking			Banking			Finance		RBHPCG		Other		Consolidated
Balance, January 1, 2017	$	1,398		$	453		$	—	$	142	$	—	$	1,993
Adjustments	—			(28		)	—		28		—		—
Balance, December 31, 2017	1,398			425			—		170		—		1,993
Goodwill acquired during the period	—			1			—		—		—		1
Adjustments	(5		)	—			—		—		—		(5		)
Balance, December 31, 2018	$	1,393		$	426		$	—	$	170	$	—	$	1,989

Summary of other intangible assets

At December 31, 2018 and 2017, Huntington’s other intangible assets consisted of the following:

(dollar amounts in millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
December 31, 2018
Core deposit intangible	$	314	$	(93	)	$	221
Customer relationship	182		(122		)	60
Total other intangible assets	$	496	$	(215	)	$	281
December 31, 2017
Core deposit intangible	$	325	$	(61	)	$	264
Customer relationship	190		(108		)	82
Total other intangible assets	$	515	$	(169	)	$	346

Estimated amortization expense of other intangible assets

The estimated amortization expense of other intangible assets for the next five years is as follows:

(dollar amounts in millions)	Amortization Expense
2019	$	49
2020	41
2021	38
2022	36
2023	34