Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

For impairment testing, goodwill was assigned to the following operating segments at December 31, 2017 and 2016:

(Dollars in millions)	2017		2016
Regional Bank	$	2,134	$	2,134
U.S. Wholesale & Investment Banking	840		840
Transaction Banking	251		251
MUFG Fund Services	76		—
Goodwill, end of year	$	3,301	$	3,225

The changes in the carrying amount of goodwill during 2017 and 2016 are shown in the table below.

(Dollars in millions)	2017		2016
Goodwill, beginning of year	$	3,225	$	3,225
Net change from transferred subsidiaries (1)	76		—
Goodwill, end of year	$	3,301	$	3,225

Identifiable Intangible Assets and Accumulated Amortization

The table below reflects the Company's identifiable intangible assets and accumulated amortization at December 31, 2017 and 2016.

	December 31, 2017							December 31, 2016
(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Core deposit intangibles	$	565	$	(530	)	$	35	$	565	$	(516	)	$	49
Trade names	113		(29		)	84		113		(26		)	87
Customer relationships	238		(47		)	191		118		(34		)	84
Other(1)	19		(16		)	3		41		(15		)	26
Total intangible assets with a definite useful life	$	935	$	(622	)	$	313	$	837	$	(591	)	$	246

Estimated Future Amortization Expense

Estimated future amortization expense at December 31, 2017 is as follows:

(Dollars in millions)	Core Deposit Intangibles		Trade Name		Customer Relationships		Other		Total Identifiable Intangible Assets
Years ending December 31, :
2018	$	7	$	3	$	16	$	1	$	27
2019	6		3		16		1		26
2020	5		3		16		1		25
2021	4		3		15		—		22
2022	4		3		15		—		22
Thereafter	9		69		113		—		191
Total estimated amortization expense	$	35	$	84	$	191	$	3	$	313