Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
Interest Income
Loans	$ 738		$ 711		$ 2,170		$ 2,136
Securities	149		122		407		346
Securities borrowed or purchased under resale agreements	97		47		243		141
Trading assets	89		50		245		110
Other	10		6		28		16
Total interest income	1,083		936		3,093		2,749
Interest Expense
Deposits	62		49		169		147
Commercial paper and other short-term borrowings	17		7		35		17
Long-term debt	66		57		183		193
Securities loaned or sold under repurchase agreements	102		36		245		99
Trading liabilities	20		14		56		42
Total interest expense	267		163		688		498
Net Interest Income	816	[1]	773	[2]	2,405	[3]	2,251	[4]
(Reversal of) provision for credit losses	18	[1]	73	[2]	(34)	[3]	196	[4]
Net interest income after (reversal of) provision for credit losses	798		700		2,439		2,055
Noninterest Income
Service charges on deposit accounts	47		48		142		143
Trust and investment management fees	32		29		91		91
Trading account activities	(3)		25		(10)		93
Securities gains, net	6		23		15		55
Credit facility fees	26		27		75		82
Brokerage commissions and fees	16		15		52		59
Card processing fees, net	10		10		34		28
Investment banking and syndication fees	106		113		288		253
Fees from affiliates	209		222		639		692
Other, net	66		58		166		113
Total noninterest income	515		570		1,492		1,609
Noninterest Expense
Salaries and employee benefits	589		592		1,790		1,759
Net occupancy and equipment	87		82		256		242
Professional and outside services	101		84		316		270
Software	49		39		142		113
Regulatory assessments	22		22		61		50
Intangible asset amortization	8		7		22		20
Other	126		126		358		372
Total noninterest expense	982	[1]	952	[2]	2,945	[3]	2,826	[4]
Income before income taxes and including noncontrolling interests	331	[1]	318	[2]	986	[3]	838	[4]
Income tax expense	109	[1]	97	[2]	255	[3]	244	[4]
Net Income Including Noncontrolling Interests	222	[1]	221	[2]	731	[3]	594	[4]
Deduct: Net loss from noncontrolling interests	10	[1]	39	[2]	25	[3]	62	[4]
Net Income Attributable to MUAH	$ 232	[1]	$ 260	[2]	$ 756	[3]	$ 656	[4]

[1] The transferred IHC entities are not measured using a "market view" perspective.

[2] The transferred IHC entities are not measured using a "market view" perspective.

[3] The transferred IHC entities are not measured using a "market view" perspective.

[4] The transferred IHC entities are not measured using a "market view" perspective.