Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Income
Loans	$ 3,303	$ 2,892	$ 2,839
Securities	665	564	483
Securities borrowed or purchased under resale agreements	652	347	195
Trading assets	415	326	172
Other	90	50	27
Total interest income	5,125	4,179	3,716
Interest Expense
Deposits	441	241	194
Commercial paper and other short-term borrowings	168	58	32
Long-term debt	365	250	240
Securities loaned or sold under repurchase agreements	734	353	140
Trading liabilities	110	73	57
Total interest expense	1,818	975	663
Net Interest Income	3,307	3,204	3,053
(Reversal of) provision for credit losses	106	(103)	155
Net interest income after (reversal of) provision for credit losses	3,201	3,307	2,898
Noninterest Income
Service charges on deposit accounts	179	188	192
Trust and investment management fees	118	121	120
Trading account activities	(24)	(5)	105
Securities gains, net	8	17	69
Credit facility fees	90	98	108
Brokerage commissions and fees	73	69	64
Card processing fees, net	50	47	39
Investment banking and syndication fees	355	369	312
Fees from affiliates	1,213	866	957
Other, net	115	240	259
Total noninterest income	2,177	2,010	2,225
Noninterest Expense
Salaries and employee benefits	2,616	2,495	2,439
Net occupancy and equipment	367	357	325
Professional and outside services	487	439	369
Software	287	192	154
Regulatory assessments	85	82	72
Intangible asset amortization	26	30	28
Other	409	389	395
Total noninterest expense	4,277	3,984	3,782
Income before income taxes and including noncontrolling interests	1,101	1,333	1,341
Income tax expense	52	299	419
Net Income Including Noncontrolling Interests	1,049	1,034	922
Deduct: Net loss from noncontrolling interests	24	43	68
Net Income Attributable to MUAH	$ 1,073	$ 1,077	$ 990