10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
[X]	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2016
OR
[ ]	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                        to

Commission File Number: 1-15081

MUFG Americas Holdings Corporation

(Exact name of registrant as specified in its charter)

Delaware	94-1234979
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1251 Avenue of the Americas, New York, NY	10020
(Address of principal executive offices)	(Zip Code)
(Registrant's telephone number, including area code) (212) 782-5911

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes x    No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes x    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer o	Accelerated filer o
Non-accelerated filer x (Do not check if a smaller reporting company)	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).   Yes o   No x

Number of shares of Common Stock outstanding at April 30, 2016: 136,330,831

THE REGISTRANT MEETS THE CONDITIONS SET FORTH IN GENERAL INSTRUCTION H (1) (a) AND (b) OF FORM 10-Q AND IS THEREFORE FILING THIS FORM WITH THE REDUCED DISCLOSURE FORMAT.

MUFG Americas Holdings Corporation and Subsidiaries

Table of Contents

PART I. FINANCIAL INFORMATION	40
Item 1. Financial Statements	40
Consolidated Statements of Income (Unaudited)	40
Consolidated Statements of Comprehensive Income (Unaudited)	41
Consolidated Balance Sheets (Unaudited)	42
Consolidated Statements of Changes in Stockholder's Equity (Unaudited)	43
Consolidated Statements of Cash Flows (Unaudited)	44
Note 1—Summary of Significant Accounting Policies and Nature of Operations	45
Note 2—Correction of Prior Period Amounts	48
Note 3—Securities	49
Note 4—Loans and Allowance for Loan Losses	55
Note 5—Variable Interest Entities	63
Note 6—Commercial Paper and Other Short-Term Borrowings	66
Note 7—Long-Term Debt	67
Note 8—Fair Value Measurement and Fair Value of Financial Instruments	68
Note 9—Derivative Instruments and Other Financial Instruments Used For Hedging	74
Note 10—Accumulated Other Comprehensive Income	78
Note 11—Employee Pension and Other Postretirement Benefits	80
Note 12—Commitments, Contingencies and Guarantees	80
Note 13—Business Segments	81
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	7
Consolidated Financial Highlights	7
Introduction	10
Executive Overview	10
Financial Performance	12
Balance Sheet Analysis	16
Capital Management	17
Risk Management	22
Business Segments	33
Critical Accounting Estimates	38
Item 3. Quantitative and Qualitative Disclosures About Market Risk	39
Item 4. Controls and Procedures	39
PART II. OTHER INFORMATION	85
Item 1. Legal Proceedings	85
Item 1A. Risk Factors	85
Item 6. Exhibits	87
SIGNATURES	88

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Glossary of Defined Terms

The following acronyms and abbreviations are used throughout this report, particularly in Part I, Item 1. “Financial Statements," Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” Item 3. “Quantitative and Qualitative Disclosures About Market Risk” and Part II, Item 1A. “Risk Factors.”

Agency Securities	Securities guaranteed by a U.S. government agency
ALCO	Asset Liability Management Committee
ALM	Asset Liability Management
AOCI	Accumulated other comprehensive income
ARC	Americas Risk Committee
ASU	Accounting Standards Update
BCBS	Basel Committee on Banking Supervision
BHC	U.S. bank holding company
BTMU	The Bank of Tokyo-Mitsubishi UFJ, Ltd. and its consolidated subsidiaries
CCAR	Comprehensive Capital Analysis and Review
CD	Certificate of deposit
CLO	Collateralized loan obligation
CMBS	Commercial mortgage-backed securities
Dodd-Frank Act	Dodd-Frank Wall Street Reform and Consumer Protection Act
ESBP	Executive Supplemental Benefit Plan
Exchange Act	U.S. Securities Exchange Act of 1934
FASB	Financial Accounting Standards Board
FBO	Foreign banking organization
FDIC	Federal Deposit Insurance Corporation
Federal Reserve	Board of Governors of the Federal Reserve System
FHLB	Federal Home Loan Bank
FICO	Fair Isaac Corporation
HQLA	High quality liquid assets
LCR	Liquidity Coverage Ratio
LIHC	Low income housing credit
LTV	Loan-to-value
MUAH	MUFG Americas Holdings Corporation
MUB	MUFG Union Bank, N.A.
MUFG	Mitsubishi UFJ Financial Group, Inc.
OCC	Office of the Comptroller of the Currency
OCI	Other comprehensive income
OREO	Other real estate owned
PCI	Purchased credit-impaired
RMBS	Residential mortgage-backed securities
S&P	Standard & Poor's Ratings Services
SEC	Securities and Exchange Commission
SERP	Supplemental Executive Retirement Plan
SLR	Supplementary Leverage Ratio
TDR	Troubled debt restructuring
VaR	Value-at-risk
VIE	Variable interest entity

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NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report includes forward-looking statements, which include expectations for our operations and business and our assumptions for those expectations. Do not rely unduly on forward-looking statements. Actual results might differ significantly compared to our expectations. See Part I, Item 1A. “Risk Factors,” in our 2015 Form 10-K, Part II, Item 1A. “Risk Factors” in this Form 10-Q, and the other risks described in this Form 10-Q and in our 2015 Form 10-K, for factors to be considered when reading any forward-looking statements in this filing.

Forward-looking statements are subject to the "safe harbor" created by section 27A of the Securities Act of 1933, as amended, and section 21E of the Securities Exchange Act of 1934, as amended. We may make forward-looking statements in our SEC filings, press releases, news articles and when we are speaking on behalf of MUFG Americas Holdings Corporation. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. Often, they include the words "believe," "expect," "target," "anticipate," "intend," "plan," "seek," "estimate," "potential," "project," "forecast," "outlook," words of similar meaning, or future or conditional verbs such as "will," "would," "should," "could," "might," or "may." These forward-looking statements are intended to provide investors with additional information with which they may assess our future potential. All of these forward-looking statements are based on assumptions about an uncertain future and are based on information known to our management at the date of these statements. We do not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date any forward-looking statements are made.

In this document and other reports to the SEC, for example, we make forward-looking statements, which discuss our expectations about:

• Our business objectives, strategies and initiatives, organizational structure, business growth, competitive position and prospects, and the effect of competition on our business and strategies

• Our assessment of significant factors and developments that have affected or may affect our results

• Our assessment of economic conditions and trends, economic and credit cycles and their impact on our business

• The economic outlook for the U.S. in general, West Coast states and global economies

• The impact of changes in interest rates resulting from changes in Federal Reserve policy or for other reasons, our strategy to manage our interest rate risk profile and other market risks, our outlook for short-term and long-term interest rates and their effect on our net interest margin (including our expectation that the current interest rate environment and the decline in our PCI portfolio will continue to place pressure on our net interest margin in 2016), our investment portfolio and our borrowers’ ability to service their loans and on residential mortgage loans and refinancings

• Pending and recent legislative and regulatory actions, and future legislative and regulatory developments, including the effects of legislation and other governmental measures, including the monetary policies of the Federal Reserve introduced in response to the 2008-2009 financial crises, and the ensuing recession affecting the banking system, financial markets and the U.S. economy, the Dodd-Frank Act, changes to the deposit insurance assessment policies of the FDIC, the effect on and application of foreign and other laws and regulations to our business and operations, and anticipated fees, costs or other impacts on our business and operations as a result of these developments

• Our strategies and expectations regarding capital levels and liquidity, our funding base, core deposits, our expectations regarding the capital, liquidity and enhanced prudential standards adopted by the U.S. bank regulators as a result of or under the Dodd-Frank Act and the BCBS capital and liquidity standards and recently adopted and proposed regulations by the U.S. federal banking agencies, and the effect of the foregoing on our business and expectations regarding compliance

• Regulatory and compliance controls and processes and their impact on our business, including our operating costs and revenues

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• The costs and effects of legal actions, investigations, regulatory actions, criminal proceedings or similar matters, our anticipated litigation strategies, our assessment of the timing and ultimate outcome of legal actions, or adverse facts and developments related thereto

• Our allowance for credit losses, including the conditions we consider in determining the unallocated allowance and our portfolio credit quality, risk rating and credit migration trends and loss factors

• Loan portfolio composition and risk rating trends, residential loan delinquency rates compared to the industry average, portfolio credit quality, our strategy regarding TDRs, and our intent to sell or hold loans we originate

• Our intent to sell or hold, and the likelihood that we would be required to sell, or expectations regarding recovery of the amortized cost basis of, various investment securities

• Our hedging strategies, positions, expectations regarding reclassifications of gains or losses on hedging instruments into earnings; and the sensitivity of our net income to various factors, including customer behavior relating to mortgage pre-payments and deposit repricing

• Expected rates of return, maturities, yields, loss exposure, growth rates, pension plan strategies, contributions and benefit payments, and projected results

• Tax rates and taxes, the possible effect of changes in taxable profits of the U.S. operations of MUFG on our state tax obligations and of expected tax credits or benefits

• Critical accounting policies and estimates, the impact or anticipated impact of recent accounting pronouncements, guidance or changes in accounting principles and future recognition of impairments for the fair value of assets, including goodwill, financial instruments, intangible assets and other assets acquired in our acquisitions of Pacific Capital Bancorp, PB Capital Corporation’s institutional commercial real estate lending portfolio, First Bank Association Bank Services, Smartstreet and our April 2010 FDIC-assisted acquisitions

• Decisions to downsize, sell or close units, dissolve subsidiaries, expand our branch network, pursue acquisitions, purchase banking facilities and equipment, realign our business model or otherwise restructure, reorganize or change our business mix, and their timing and impact on our business

• Our expectations regarding the impact of acquisitions on our business and results of operations and amounts we expect to collect from or must pay to the FDIC under loss share agreements

• The impact of changes in our credit rating including methodology changes adopted by rating agencies

• Maintenance of casualty and liability insurance coverage appropriate for our operations

• The relationship between our business and that of BTMU and MUFG, the impact of their credit ratings, operations or prospects on our credit ratings and actions that may or may not be taken by BTMU and MUFG

• Threats to the banking sector and our business due to cyber-security issues and attacks on financial institutions and other businesses, such as large retailers, and regulatory expectations relating to cyber-security

• Our understanding that BTMU will continue to limit its participation in transactions with Iranian entities and individuals to certain types of transactions

• Challenges associated with our business integration initiative with our parent company, BTMU, effective July 1, 2014

• The objectives and effects on operations of our business integration initiative and its near term effect on our balance sheet, earnings and capital ratios

• The effect of the California drought on its economy and related governmental actions

• Our expectation that there will be further declines in the credit quality of our oil and gas portfolio

• Descriptions of assumptions underlying or relating to any of the foregoing

Readers of this document should not rely unduly on any forward-looking statements, which reflect only our management’s belief as of the date of this report. There are numerous risks and uncertainties that could

5

cause actual outcomes and results to differ materially from those discussed in our forward-looking statements. Many of these factors are beyond our ability to control or predict and could have a material adverse effect on our financial condition, results of operations or prospects. Such risks and uncertainties include, but are not limited to, those described or referred to in Part I, Item 1. “Business” under the captions “Competition” and “Supervision and Regulation” of our 2015 Form 10-K, and in Part II, Item 1A. “Risk Factors” and Part I, Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Form 10-Q, and in our other reports to the SEC.

Any factor described in this report could by itself, or together with one or more other factors, adversely affect our business, prospects, results of operations or financial condition.

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Item 2.   Management's Discussion and Analysis of Financial Condition and Results of Operations

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Financial Highlights

	For the Three Months Ended
(Dollars in millions)	March 31, 2016			March 31, 2015			Percent Change
Results of operations:
Net interest income	$	697		$	683		2	%
Noninterest income	395			335			18
Total revenue	1,092			1,018			7
Noninterest expense	876			849			3
Pre-tax, pre-provision income(1)	216			169			28
Provision for credit losses	162			3			nm
Income before income taxes and including noncontrolling interests	54			166			(67	)
Income tax expense	17			34			(50	)
Net income including noncontrolling interests	37			132			(72	)
Deduct: Net loss from noncontrolling interests	12			5			140
Net income attributable to MUAH	$	49		$	137		(64	)
Balance sheet (period average):
Total assets	$	115,866		$	113,134		2
Total securities	23,507			22,172			6
Total loans held for investment	78,450			77,305			1
Earning assets	104,888			102,645			2
Total deposits	84,010			84,088			—
MUAH stockholder's equity	15,687			15,069			4
Performance ratios:
Return on average assets(2)	0.17		%	0.49		%
Return on average MUAH stockholder's equity(2)	1.25			3.65
Efficiency ratio(3)	80.17			83.35
Adjusted efficiency ratio(4)	72.12			74.90
Net interest margin(2) (5)	2.69			2.70
Net loans charged-off (recovered) to average total loans held for investment(2)	0.02			0.01

7

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Financial Highlights (Continued)

	As of
	March 31, 2016			December 31, 2015			Percent Change
Balance sheet (end of period):
Total assets	$	120,909		$	116,216		4	%
Total securities	23,616			24,502			(4	)
Total loans held for investment	79,299			77,599			2
Nonperforming assets	974			573			70
Core deposits(6)	74,882			76,094			(2	)
Total deposits	89,500			84,340			6
Long-term debt	11,843			12,349			(4	)
MUAH stockholder's equity	15,758			15,461			2
Credit ratios:
Allowance for loan losses to total loans held for investment(7)	1.11		%	0.93		%
Allowance for loan losses to nonaccrual loans(7)	91.99			130.53
Allowance for credit losses to total loans held for investment(8)	1.32			1.14
Allowance for credit losses to nonaccrual loans(8)	109.68			160.42
Nonperforming assets to total loans held for investment and OREO	1.23			0.74
Nonperforming assets to total assets	0.81			0.49
Nonaccrual loans to total loans held for investment	1.21			0.71
Capital ratios:
Regulatory:
Common Equity Tier 1 risk-based capital ratio(9)	13.33		%	13.63		%
Tier 1 risk-based capital ratio(9)	13.33			13.64
Total risk-based capital ratio(9)	15.32			15.56
Tier 1 leverage ratio(9)	11.41			11.40
Other:
Tangible common equity ratio(10)	10.55		%	10.71		%
Common Equity Tier 1 risk-based capital ratio (U.S. Basel III standardized   approach; fully phased-in)(11)	13.31			13.46

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MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Financial Highlights (Continued)

(1) Pre-tax, pre-provision income is total revenue less noninterest expense. Management believes that this is a useful financial measure because it enables investors and others to assess the Company's ability to generate capital to cover credit losses through a credit cycle.

(2) Annualized.

(3) The efficiency ratio is total noninterest expense as a percentage of total revenue (net interest income and noninterest income).

(4) The adjusted efficiency ratio, a non-GAAP financial measure, is adjusted noninterest expense (noninterest expense excluding staff costs associated with fees from affiliates - support services, foreclosed asset expense and other credit costs, certain costs related to productivity initiatives, LIHC investment amortization expense, expenses of the LIHC consolidated variable interest entities, merger and business integration costs, privatization-related expenses, intangible asset amortization, and a contract termination fee) as a percentage of adjusted total revenue (net interest income (taxable-equivalent basis) and noninterest income), excluding the impact of fees from affiliates - support services, productivity initiatives related to the sale of certain premises, accretion related to privatization-related fair value adjustments, other credit costs and impairment on private equity investments. Management discloses the adjusted efficiency ratio as a measure of the efficiency of our operations, focusing on those costs most relevant to our business activities. Please refer to Part I, Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations - Noninterest Income and Noninterest Expense" in this Form 10-Q for further information.

(5) Yields, interest income and net interest margin are presented on a taxable-equivalent basis using the federal statutory tax rate of 35%.

(6) Core deposits exclude brokered deposits, foreign time deposits, domestic time deposits greater than $250,000 and certain other deposits not considered to be core customer relationships.

(7) The allowance for loan losses ratios are calculated using the allowance for loan losses as a percentage of end of period total loans held for investment or total nonaccrual loans, as appropriate.

(8) The allowance for credit losses ratios include the allowances for loan losses and for losses on unfunded credit commitments as a percentage of end of period total loans held for investment or total nonaccrual loans, as appropriate.

(9) These capital ratios are calculated in accordance with the transition guidelines set forth in the U.S. federal banking agencies' final U.S. Basel III regulatory capital rules.

(10) The tangible common equity ratio, a non-GAAP financial measure, is calculated as tangible common equity divided by tangible assets. The methodology for determining tangible common equity may differ among companies. The tangible common equity ratio facilitates the understanding of the Company's capital structure and is used to assess and compare the quality and composition of the Company's capital structure to other financial institutions. Please refer to Part I, Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations - Capital Management" in this Form 10-Q for further information.

(11) Common Equity Tier 1 risk-based capital (standardized, fully phased-in basis) is a non-GAAP financial measure that is used by investors, analysts and bank regulatory agencies to assess the capital position of financial services companies as if the transition provisions of the U.S. Basel III rules were fully phased in for the periods in which the ratio is disclosed.  Management reviews this ratio, which excludes accumulated other comprehensive loss, along with other measures of capital as part of its financial analyses and has included this non-GAAP information because of current interest in such information by market participants. Refer to Part I, Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations - Capital Management" in this Form 10-Q for further information.

nm = not meaningful

n/a = not applicable

9

Please refer to our Consolidated Financial Statements and the Notes to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2015 (2015 Form 10-K) along with the following discussion and analysis of our consolidated financial position and results of operations for the period ended March 31, 2016 in this Form 10-Q. Averages, as presented in the following tables, are substantially all based upon daily average balances.

As used in this Form 10-Q, terms such as “the Company,” “we,” “us” and “our” refer to MUFG Americas Holdings Corporation (MUAH), one or more of its consolidated subsidiaries, or to all of them together.

Introduction

We are a financial holding company and bank holding company whose principal subsidiary is MUFG Union Bank, N.A. (MUB or the Bank). We are a wholly-owned subsidiary of BTMU, which is a wholly-owned subsidiary of MUFG.

During the fourth quarter of 2015, the management of MUFG Americas announced a realignment of its business model in the Americas, which includes MUAH. The realignment combined the customer base of the Commercial Banking operating segment, including its products and services, into the activities performed within various other segments. As part of this realignment, a Regional Bank operating segment was created, providing a coordinated local delivery model in our western footprint encompassing retail and wealth, and middle market commercial and real estate markets. Additionally, all corporate clients with annual revenues over $500 million, including those previously served within the former Commercial Banking segment, were moved into the newly created U.S. Wholesale Banking segment in order to strengthen our position as a strategic advisor with deep industry coverage and product capability. After the realignment, the Company has four reportable segments: Regional Bank, U.S. Wholesale Banking, Investment Banking & Markets and Transaction Banking.

We service U.S. Wholesale Banking, Investment Banking & Markets, and certain Transaction Banking customers through the MUFG brand and continue to serve Regional Bank and Transaction Banking customers through the Union Bank brand. We provide a wide range of financial services to consumers, small businesses, middle-market companies and major corporations, both nationally and internationally. The Company had consolidated assets of $120.9 billion at March 31, 2016.

The Company’s leadership team is bicoastal with Regional Bank and Transaction Banking leaders on the West Coast. U.S. Wholesale Banking and Investment Banking & Markets leaders are based in New York City. The corporate headquarters (principal executive office) for MUB and MUAH is in New York City. MUB's main banking office is in San Francisco.

References to the privatization transaction in this report refer to the transaction on November 4, 2008, when we became a privately held company. All of our issued and outstanding shares of common stock are owned by BTMU.

Executive Overview

We are providing you with an overview of what we believe are the most significant factors and developments that affected our first quarter 2016 results and that could influence our future results. Further detailed information can be found elsewhere in this Form 10-Q. In addition, you should carefully read this entire document and any other reports that we refer to in this Form 10-Q for more detailed information to assist your understanding of trends, events and uncertainties that impact us.

Our sources of revenue are net interest income and noninterest income (collectively “total revenue”). Net interest income is generated predominantly from interest earned from loans, investment securities and other interest-earning assets, less interest incurred on deposits and borrowings. The primary sources of noninterest income are revenues from service charges on deposit accounts, trust and investment management fees, trading account activities, credit facility fees, merchant banking fees and fees from affiliates. Changes in interest rates, credit quality, economic trends and the capital markets are primary factors that affect our revenue sources. In the first quarter of 2016, revenue was comprised of 64% net interest income and 36% noninterest income. A summary of our financial results is discussed below.

Our primary sources of liquidity are core deposits, securities and wholesale funding. Core deposits exclude brokered deposits, foreign time deposits, domestic time deposits greater than $250,000, and certain other deposits not considered to be core customer relationships. Wholesale funding includes unsecured funds

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raised from interbank and other sources, both domestic and international, and secured funds raised by selling securities under repurchase agreements and by borrowing from the FHLB. We evaluate and monitor the stability and reliability of our various funding sources to help ensure that we have sufficient liquidity when adverse situations arise.

Performance Highlights

Net income attributable to MUAH was $49 million in the first quarter of 2016, a decrease of $88 million from the first quarter of 2015, substantially driven by an increase in the provision for credit losses. The provision for credit losses in the first quarter of 2016 of $162 million was due largely to an increase in the allowance for credit losses for loans in the oil and gas sector.

The increase in the allowance for credit losses in the oil and gas sector resulted from continued low oil and gas prices, which has resulted in negative credit migration, primarily within our petroleum exploration and production (PEP) portfolio. PEP loans in nonaccrual status totaled $547 million at March 31, 2016, compared with $175 million at December 31, 2015 and $46 million at September 30, 2015. Reflecting the increases in credit reserves, the allowance for credit losses within the PEP portfolio as a percentage of total PEP loan commitments was 7.52% at March 31, 2016, compared with 5.53% at December 31, 2015 and 2.07% at September 30, 2015. PEP loan commitments accounted for approximately 80% of our total oil and gas loan commitments at March 31, 2016, and 81% of PEP loan commitments were collateralized by oil and gas reserves. See "Concentration of Risk" within the "Risk Management" section of this Management's Discussion and Analysis for additional information about our oil and gas loan exposures. Aside from the oil and gas sector, credit quality continued to be stable during the first quarter of 2016.

Net interest income totaled $697 million in the first quarter of 2016, an increase of $14 million from the same quarter in the prior year. Growth in the loan portfolio fueled the increase, primarily driven by a $1.6 billion average balance increase in commercial and industrial loans. The net interest margin was 2.69% in the first quarter of 2016 and 2.70% in the first quarter of 2015.

Capital Ratios

The Company's capital ratios continued to exceed the regulatory thresholds for "well-capitalized" BHCs. The U.S. Basel III Common Equity Tier 1, Tier 1 and Total risk-based capital ratios were 13.33%, 13.33% and 15.32%, respectively at March 31, 2016.

Formation of the U.S. Intermediate Holding Company

To comply with the final rules regarding enhanced prudential standards for large FBOs operating in the U.S., effective July 1, 2016, MUFG announced in the first quarter of 2016 that it designated MUAH as its U.S. intermediate holding company through which ownership of MUFG's U.S. subsidiaries will be held. These subsidiaries include MUB, Mitsubishi UFJ Securities (USA), Inc., a broker-dealer, and various other non-bank subsidiaries. MUFG, BTMU and the Company are in the process of making the appropriate structural, operational and financial changes to comply with these rules.

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Financial Performance

Net Interest Income

The following tables show the major components of net interest income and net interest margin:

	For the Three Months Ended
	March 31, 2016							March 31, 2015
	Average Balance			Interest Income/ Expense(1)		Average Yield/ Rate(1)(2)		Average Balance			Interest Income/ Expense(1)		Average Yield/ Rate(1)(2)
(Dollars in millions)
Assets
Loans held for investment:(3)
Commercial and industrial	$	29,957		$	253	3.40	%	$	28,394		$	223	3.18	%
Commercial mortgage	14,485			122		3.36		13,903			115		3.31
Construction	2,272			19		3.28		1,853			14		3.03
Lease financing	732			8		4.56		776			10		5.11
Residential mortgage	27,366			231		3.38		28,766			247		3.43
Home equity and other consumer loans	3,315			40		4.85		3,103			32		4.22
Loans, before purchased credit-impaired loans	78,127			673		3.46		76,795			641		3.36
Purchased credit-impaired loans	323			25		31.04		510			38		30.49
Total loans held for investment	78,450			698		3.57		77,305			679		3.54
Securities	23,507			115		1.95		22,172			106		1.92
Interest bearing deposits in banks	2,400			3		0.53		2,776			2		0.25
Federal funds sold and securities purchased under resale agreements	78			—		0.46		97			—		—
Trading account assets	162			—		0.57		196			—		0.70
Other earning assets	291			3		3.62		99			1		2.07
Total earning assets	104,888			819		3.13		102,645			788		3.09
Allowance for loan losses	(719		)					(542		)
Cash and due from banks	1,704							1,631
Premises and equipment, net	608							621
Other assets(4)	9,385							8,779
Total assets	$	115,866						$	113,134
Liabilities
Interest bearing deposits:
Transaction and money market accounts	$	38,397		$	28	0.30		$	39,713		$	30	0.31
Savings	5,715			1		0.06		5,550			1		0.06
Time	7,577			20		1.08		8,975			21		0.93
Total interest bearing deposits	51,689			49		0.38		54,238			52		0.39
Commercial paper and other short-term borrowings(5)	1,098			1		0.37		2,991			1		0.20
Long-term debt	12,148			65		2.12		8,008			47		2.34
Total borrowed funds	13,246			66		1.98		10,999			48		1.76
Total interest bearing liabilities	64,935			115		0.71		65,237			100		0.62
Noninterest bearing deposits	32,321							29,850
Other liabilities(6)	2,745							2,750
Total liabilities	100,001							97,837
Equity
MUAH stockholder's equity	15,687							15,069
Noncontrolling interests	178							228
Total equity	15,865							15,297
Total liabilities and equity	$	115,866						$	113,134
Net interest income/spread (taxable-equivalent basis)				704		2.42	%				688		2.47	%
Impact of noninterest bearing deposits						0.23							0.19
Impact of other noninterest bearing sources						0.04							0.04
Net interest margin						2.69							2.70
Less: taxable-equivalent adjustment				7							5
Net interest income				$	697						$	683

(1) Yields, interest income and net interest margin are presented on a taxable-equivalent basis using the federal statutory tax rate of 35%.

(2) Annualized.

(3) Average balances on loans held for investment include all nonaccrual loans. The amortized portion of net loan origination fees (costs) is included in interest income on loans, representing an adjustment to the yield.

(4) Includes noninterest bearing trading account assets.

(5) Includes interest bearing trading account liabilities.

(6) Includes noninterest bearing trading account liabilities.

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The increase in net interest income in the first quarter of 2016 compared with the first quarter of 2015 is due primarily to an increase in commercial and industrial, commercial mortgage and construction average loan balances. These increases were offset by the impact of declines in the average residential mortgage and PCI loan balances, and an increase in funding costs due to a shift in the mix of borrowed funds to higher cost long-term debt. An increase in the average notional amount of receive fixed interest rate swaps used to hedge floating rate commercial loans in the first quarter of 2016 compared with the first quarter of 2015 also contributed to the increase in interest income and yields on commercial loans. Although the net interest margin was nearly flat compared with the first quarter of 2015, excluding income on our PCI portfolio, the net interest margin was 2.60% in the first quarter of 2016 compared with 2.56% in the same prior year period.

Noninterest Income and Noninterest Expense

The following tables display our noninterest income and noninterest expense for the three months ended March 31, 2016 and 2015:

Noninterest Income

	For the Three Months Ended
						Increase (Decrease)
	March 31, 2016		March 31, 2015
(Dollars in millions)						Amount			Percent
Service charges on deposit accounts	$	49	$	49		$	—		—		%
Trust and investment management fees	31		28			3			11
Trading account activities	13		8			5			63
Securities gains, net	13		3			10			333
Credit facility fees	27		30			(3		)	(10	)
Merchant banking fees	14		20			(6		)	(30	)
Brokerage commissions and fees	13		13			—			—
Card processing fees, net	9		8			1			13
Fees from affiliates	200		166			34			20
Other investment income	—		(3		)	3			100
Other, net	26		13			13			100
Total noninterest income	$	395	$	335		$	60		18		%

Noninterest income increased during the three months endedMarch 31, 2016 primarily due to an increase in fees from affiliates and lower FDIC indemnification asset amortization expense, which is included in Other, net. Losses and impairments on oil and gas-related private equity investments partially offset these increases in the first quarter of 2016. The losses are included in Other investment income, while the impairments, which totaled $12 million, are included in Other, net.

For the three months ended March 31, 2016 and 2015, the Company recorded the following income and expenses related to the support services provided as part of the business integration initiative:

	For the Three Months Ended
(Dollars in millions)	March 31, 2016		March 31, 2015
Fees from affiliates - support services	$	149	$	121
Staff costs associated with fees from affiliates - support services	$	139	$	112

The increase in staff costs for support services for the three months endedMarch 31, 2016 compared with the three months endedMarch 31, 2015 was driven primarily by higher headcount due to regulatory and compliance initiatives, as well as projects to increase operational efficiencies, which also resulted in a corresponding increase in fees from affiliates. The Company also recognized fees from affiliates through revenue

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sharing agreements with BTMU for various business and banking services, with associated costs included within noninterest expense.

Noninterest Expense

	For the Three Months Ended
					Increase (Decrease)
	March 31, 2016		March 31, 2015
(Dollars in millions)					Amount			Percent
Salaries and other compensation	$	457	$	469	$	(12	)	(3	)	%
Employee benefits	86		98		(12		)	(12	)
Salaries and employee benefits	543		567		(24		)	(4	)
Net occupancy and equipment	76		80		(4		)	(5	)
Professional and outside services	102		77		25			32
Intangible asset amortization	7		10		(3		)	(30	)
Regulatory assessments	14		13		1			8
Software	36		28		8			29
LIHC investment amortization	2		2		—			—
Advertising and public relations	14		10		4			40
Communications	10		10		—			—
Data processing	9		7		2			29
Other	63		45		18			40
Total noninterest expense	$	876	$	849	$	27		3		%

The increase in noninterest expense for the three months endedMarch 31, 2016 compared with the three months endedMarch 31, 2015 was driven primarily by an increase in professional and outside services expense related in part to various technology and regulatory compliance initiatives. Noninterest expense also increased due to an increase in software expense and fixed asset impairments, which are included within Other. These increases were partially offset by a decrease in pension expense, which is included within salaries and employee benefits expense.

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The adjusted efficiency ratio is a non-GAAP financial measure used by management to measure the efficiency of our operations, focusing on those costs management believes to be most relevant to our core business activities. Productivity initiative costs include salaries and benefits associated with operational efficiency enhancements. The following table shows the calculation of this ratio for the three months endedMarch 31, 2016 and 2015:

	For the Three Months Ended
(Dollars in millions)	March 31, 2016			March 31, 2015
Noninterest Expense	$	876		$	849
Less: Staff costs associated with fees from affiliates - support services	139			112
Less: Foreclosed asset expense and other credit costs	(1		)	1
Less: Productivity initiative costs	12			28
Less: LIHC investment amortization expense	2			2
Less: Expenses of the LIHC consolidated VIEs	12			9
Less: Merger and business integration costs	5			9
Less: Net adjustments related to privatization transaction	5			8
Less: Intangible asset amortization	3			3
Noninterest expense, as adjusted (a)	$	699		$	677
Total Revenue	$	1,092		$	1,018
Add: Net interest income taxable-equivalent adjustment	7			5
Less: Fees from affiliates - support services	149			121
Less: Productivity initiative gains	—			1
Less: Accretion related to privatization-related fair value adjustments	5			1
Less: Other credit costs	(13		)	(4		)
Less: Impairment on private equity investments	(12		)	—
Total revenue, as adjusted (b)	$	970		$	904
Adjusted efficiency ratio (a)/(b)	72.12		%	74.90		%

Income Tax Expense

Income tax expense and the effective tax rate include both federal and state income taxes. In the first quarter of 2016, income tax expense was $17 million with an effective tax rate of 31%, compared with 20% for the first quarter of 2015. Income tax expense in the first quarter of 2015 was reduced by certain discrete tax adjustments which impacted the effective tax rate.

For further information regarding income tax expense, see "Management's Discussion and Analysis of Financial Condition and Results of Operations - Income Tax Expense" in Part II, Item 7. and “Changes in our tax rates could affect our future results” in “Risk Factors” in Part I, Item 1A. and Note 16 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

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Balance Sheet Analysis

Securities

Our securities portfolio is primarily used for liquidity and interest rate risk management purposes, to invest cash resulting from excess liquidity, and to a lesser extent, to support our business development objectives. We strive to maximize total return while managing this objective within appropriate risk parameters. Securities available for sale are principally comprised of U.S. Treasury securities, RMBS, CMBS, Cash Flow CLOs, and direct bank purchase bonds. Direct bank purchase bonds are instruments that are issued in bond form, accounted for as securities, but underwritten as loans with features that are typically found in commercial loans. Securities held to maturity consist of U.S. Treasury securities, U.S. government-sponsored agency securities, RMBS, and CMBS.

The amortized cost, gross unrealized gains, gross unrealized losses and fair values of securities are detailed in Note 3 to our Consolidated Financial Statements in this Form 10-Q.

Loans Held for Investment

The following table shows loans held for investment outstanding by loan type at the end of each period presented:

					Increase (Decrease)
	March 31, 2016		December 31, 2015
(Dollars in millions)					Amount			Percent
Loans held for investment:
Commercial and industrial	$	30,212	$	29,730	$	482		2	%
Commercial mortgage	14,920		13,904		1,016			7
Construction	2,251		2,297		(46		)	(2	)
Lease financing	732		737		(5		)	(1	)
Total commercial portfolio	48,115		46,668		1,447			3
Residential mortgage	27,495		27,344		151			1
Home equity and other consumer loans	3,385		3,251		134			4
Total consumer portfolio	30,880		30,595		285			1
Total loans held for investment, before purchased credit-impaired loans	78,995		77,263		1,732			2
Purchased credit-impaired loans	304		336		(32		)	(10	)
Total loans held for investment	$	79,299	$	77,599	$	1,700		2	%

Loans held for investment increased from December 31, 2015 to March 31, 2016, primarily due to organic loan growth in the commercial mortgage loan portfolio.

Cross-Border Outstandings

Our cross-border outstandings reflect certain additional economic and political risks that differ from or are greater than those reflected in domestic outstandings. These risks include, but are not limited to, those arising from exchange rate fluctuations and restrictions on the transfer of funds. Our total cross-border outstandings for Canada, the only country where such outstandings exceeded one percent of total assets, were $1.3 billion and $1.2 billion at March 31, 2016 and December 31, 2015, respectively. The cross-border outstandings are based on category and domicile of ultimate risk and are comprised primarily of trading account assets and loans.

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Deposits

The table below presents our deposits as of March 31, 2016 and December 31, 2015.

					Increase (Decrease)
	March 31, 2016		December 31, 2015
(Dollars in millions)					Amount			Percent
Interest checking	$	4,381	$	4,514	$	(133	)	(3	)%
Money market	33,046		33,896		(850		)	(3	)
Total interest bearing transaction and money market accounts	37,427		38,410		(983		)	(3	)
Savings	5,755		5,687		68			1
Time	7,762		7,780		(18		)	—
Total interest bearing deposits	50,944		51,877		(933		)	(2	)
Noninterest bearing deposits	38,556		32,463		6,093			19
Total deposits	$	89,500	$	84,340	$	5,160		6	%
Total interest bearing deposits include the following brokered deposits:
Interest bearing transaction and money market accounts	$	2,816	$	2,976	$	(160	)	(5	)%
Time	2,444		2,512		(68		)	(3	)
Total brokered deposits	$	5,260	$	5,488	$	(228	)	(4	)%
Core Deposits:
Total deposits	$	89,500	$	84,340	$	5,160		6	%
Less: total brokered deposits	5,260		5,488		(228		)	(4	)
Less: total foreign deposits and nonbrokered domestic time deposits of over $250,000	2,865		2,758		107			4
Less: certain other deposits not considered to be core customer relationships	6,493		—		6,493			100
Total core deposits	$	74,882	$	76,094	$	(1,212	)	(2	)%

Total deposits increased substantially due to a single short-term noninterest bearing deposit at March 31, 2016. Core deposits decreased during the quarter substantially due to declines in total interest bearing checking and money market accounts and noninterest bearing deposits within our Transaction Banking segment. Core deposits as a percentage of total deposits were 84% and 90% at March 31, 2016 and December 31, 2015, respectively.

Capital Management

Both MUAH and MUB are subject to various capital adequacy regulations issued by the federal banking agencies, including requirements to file an annual capital plan and to maintain minimum regulatory capital ratios. As of March 31, 2016, management believes the capital ratios of MUAH and MUB met all regulatory requirements of “well-capitalized” institutions.

The Company timely filed its annual capital plan under the Federal Reserve's CCAR program in April 2016. CCAR evaluates capital planning processes and assesses capital adequacy levels under various scenarios to determine if BHCs would have sufficient capital to continue operations throughout times of economic and financial market stress. The Company's 2016 CCAR submission encompassed a range of expected and stressed economic and financial market scenarios, and included an assessment of expected sources and uses of capital over a prescribed planning horizon, a description of all capital actions within that timeframe, and a discussion of any proposed business plan changes that are likely to have a material impact on capital adequacy.

MUAH and MUB are required to maintain minimum capital ratios in accordance with rules issued by the U.S. federal banking agencies. In July 2013, the U.S. federal banking agencies issued final rules to implement the BCBS capital guidelines for U.S. banking organizations (U.S. Basel III). These rules supersede the U.S. federal banking agencies’ general risk-based capital rules (commonly known as “Basel I”), advanced approaches rules (commonly known as “Basel II”) that are applicable to certain large banking organizations, and leverage

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rules, and are subject to certain transition provisions. Among other requirements, the U.S. Basel III rules revised the definition of capital; increased minimum capital ratios; introduced a minimum Common Equity Tier 1 capital ratio of 4.5% and a capital conservation buffer of 2.5% (for a total minimum Common Equity Tier 1 capital ratio of 7.0%) and a potential countercyclical buffer of up to 2.5%, which would be imposed by regulators at their discretion if it is determined that a period of excessive credit growth is contributing to an increase in financial institution systemic risk for advanced approaches institutions only; mandated a Tier 1 leverage ratio of 4%; introduced, for large and internationally active BHCs, a Tier 1 SLR that is currently set at 3% and which incorporates off-balance sheet exposures; revised Basel I rules for calculating risk-weighted assets under a standardized approach; modified the existing Basel II advanced approaches rules for calculating risk-weighted assets under U.S. Basel III; and eliminated, for advanced approaches institutions, over a four-year phase-in period beginning on January 1, 2014, the AOCI or loss exclusion that had applied under Basel I and Basel II rules.

As required under U.S. Basel III rules, the 2.5% capital conservation buffer is being implemented on a phased-in basis in equal increments of 0.625% per year over a four-year period that commenced on January 1, 2016. MUAH and MUB would satisfy the minimum capital requirements including the capital conservation buffer on a fully phased-in basis if those requirements were effective as of March 31, 2016.

The following tables summarize the calculation of MUAH’s risk-based capital ratios in accordance with the U.S. Basel III rules as of March 31, 2016 and December 31, 2015.

MUFG Americas Holdings Corporation

	U.S. Basel III
(Dollars in millions)	March 31, 2016		December 31, 2015
Capital Components
Common Equity Tier 1 capital	$	12,936	$	12,920
Tier 1 capital	12,936		$	12,923
Tier 2 capital	1,930		1,824
Total risk-based capital	$	14,866	$	14,747
Risk-weighted assets	$	97,011	$	94,775
Average total assets for leverage capital purposes	$	113,385	$	113,364

	U.S. Basel III								Minimum Capital Requirement with Capital Conservation Buffer (1)
(Dollars in millions)	March 31, 2016				December 31, 2015				March 31, 2016
Capital Ratios	Amount		Ratio		Amount		Ratio		Amount			Ratio
Common Equity Tier 1 capital (to risk-weighted assets)	$	12,936	13.33	%	$	12,920	13.63	%	≥	$	4,972	5.125	%
Tier 1 capital (to risk-weighted assets)	12,936		13.33		12,923		13.64		≥	6,426		6.625
Total capital (to risk-weighted assets)	14,866		15.32		14,747		15.56		≥	8,367		8.625
Tier 1 leverage(2)	12,936		11.41		12,923		11.40		≥	4,535		4.000

(1)Beginning January 1, 2016, the minimum capital requirement includes a capital conservation buffer of 0.625%.

(2)Tier 1 capital divided by quarterly average assets (excluding certain intangible assets).

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The following tables summarize the calculation of MUB’s risk-based capital ratios in accordance with the transition guidelines set forth in the U.S. Basel III rules as of March 31, 2016 and December 31, 2015.

MUFG Union Bank, N.A.

	U.S. Basel III
(Dollars in millions)	March 31, 2016		December 31, 2015
Capital Components
Common Equity Tier 1 capital	$	12,322	$	12,384
Tier 1 capital	12,322		$	12,384
Tier 2 capital	1,769		1,619
Total risk-based capital	$	14,091	$	14,003
Risk-weighted assets	$	96,119	$	93,930
Average total assets for leverage capital purposes	$	112,216	$	112,243

	U.S. Basel III								Minimum Capital Requirement with Capital Conservation Buffer (1)					To Be Well-Capitalized Under Prompt Corrective Action Provisions
(Dollars in millions)	March 31, 2016				December 31, 2015				March 31, 2016					March 31, 2016
Capital Ratios	Amount		Ratio		Amount		Ratio		Amount			Ratio		Amount			Ratio
Common Equity Tier 1 capital (to risk-weighted assets)	$	12,322	12.82	%	$	12,384	13.18	%	≥	$	4,926	5.125	%	≥	$	6,248	6.5	%
Tier 1 capital (to risk-weighted assets)	12,322		12.82		12,384		13.18		≥	6,368		6.625		≥	7,690		8.0
Total capital (to risk-weighted assets)	14,091		14.66		14,003		14.91		≥	8,290		8.625		≥	9,612		10.0
Tier 1 leverage(2)	12,322		10.98		12,384		11.03		≥	4,489		4.000		≥	5,611		5.0

(1)Beginning January 1, 2016, the minimum capital requirement includes a capital conservation buffer of 0.625%.

(2)Tier 1 capital divided by quarterly average assets (excluding certain intangible assets).

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In addition to capital ratios determined in accordance with regulatory requirements, we consider the tangible common equity ratio when evaluating capital utilization and adequacy. This capital ratio is monitored by management, and presented below, to further facilitate the understanding of our capital structure and for use in assessing and comparing the quality and composition of the Company’s capital structure to other financial institutions. This ratio is not codified within GAAP or federal banking regulations in effect at March 31, 2016. Therefore, it is considered a non-GAAP financial measure. Our tangible common equity ratio calculation method may differ from those used by other financial services companies.

The following table summarizes the calculation of the Company's tangible common equity ratios as of March 31, 2016 and December 31, 2015:

	March 31, 2016			December 31, 2015
(Dollars in millions)
Total MUAH stockholder's equity	$	15,758		$	15,461
Goodwill	(3,225		)	(3,225		)
Intangible assets, except mortgage servicing rights	(182		)	(190		)
Deferred tax liabilities related to goodwill and intangible assets	49			39
Tangible common equity (a)	$	12,400		$	12,085
Total assets	$	120,909		$	116,216
Goodwill	(3,225		)	(3,225		)
Intangible assets, except mortgage servicing rights	(182		)	(190		)
Deferred tax liabilities related to goodwill and intangible assets	49			39
Tangible assets (b)	$	117,551		$	112,840
Tangible common equity ratio (a)/(b)	10.55		%	10.71		%

The Company’s fully phased-in Common Equity Tier 1 capital ratio calculated under the U.S. Basel III standardized approach at March 31, 2016 and December 31, 2015 was estimated to be 13.31% and 13.46%, respectively. Management believes that the Company would satisfy all capital adequacy requirements under the U.S. Basel III rules on a fully phased-in basis if those requirements had been effective at both March 31, 2016 and December 31, 2015.

The following tables summarize the calculation of the Company's fully phased-in Common Equity Tier 1 capital to total risk-weighted assets ratio under the U.S. Basel III standardized approach as of March 31, 2016 and December 31, 2015:

Common Equity Tier 1 capital under U.S. Basel III (standardized approach; fully phased-in)
	March 31, 2016
(Dollars in millions)	(Estimated)
Common Equity Tier 1 capital under U.S. Basel III (transitional)	$	12,936
Other	(40		)
Common Equity Tier 1 capital estimated under U.S. Basel III (standardized approach; fully phased-in) (a)	$	12,896
Risk-weighted assets, estimated under U.S. Basel III (standardized; transitional)	$	97,011
Adjustments	(122		)
Total risk-weighted assets, estimated under U.S. Basel III (standardized approach; fully phased-in) (b)	$	96,889
Common Equity Tier 1 capital to total risk-weighted assets estimated under U.S. Basel III (standardized approach; fully phased-in) (1) (a)/(b)	13.31		%

(1) Common Equity Tier 1 risk-based capital (standardized, fully phased-in basis) is a non-GAAP financial measure that is used by investors, analysts and bank regulatory agencies to assess the capital position of financial services companies as if the transition provisions of the U.S. Basel III rules were fully phased-in for the period in which the ratio is disclosed.  Management reviews this ratio, which excludes components of accumulated other comprehensive loss, along with other measures of capital as part of its financial analyses and has included this non-GAAP information, and the corresponding reconciliation from Common Equity Tier 1 capital (calculated according to the transition provisions under U.S. Basel III rules) because of current interest in such information by market participants.

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Common Equity Tier 1 capital under U.S. Basel III (standardized approach; fully phased-in)
	December 31, 2015
(Dollars in millions)	(Estimated)
Common Equity Tier 1 capital under U.S. Basel III (transitional)	$	12,920
Other	(61		)
Common Equity Tier 1 capital estimated under U.S. Basel III (standardized approach; fully phased-in) (a)	$	12,859
Risk-weighted assets, estimated under U.S. Basel III (standardized; transitional)	$	94,775
Adjustments	756
Total risk-weighted assets, estimated under U.S. Basel III (standardized approach; fully phased-in) (b)	$	95,531
Common Equity Tier 1 capital to total risk-weighted assets estimated under U.S. Basel III (standardized approach; fully phased-in) (1) (a)/(b)	13.46		%

(1) Common Equity Tier 1 risk-based capital (standardized, fully phased-in basis) is a non-GAAP financial measure that is used by investors, analysts and bank regulatory agencies to assess the capital position of financial services companies as if the transition provisions of the U.S. Basel III rules were fully phased-in for the period in which the ratio is disclosed.  Management reviews this ratio, which excludes components of accumulated other comprehensive loss, along with other measures of capital as part of its financial analyses and has included this non-GAAP information, and the corresponding reconciliation from Common Equity Tier 1 capital (calculated according to the transition provisions under U.S. Basel III rules) because of current interest in such information by market participants.

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Risk Management

All financial institutions must manage and control a variety of business risks that can significantly affect their financial condition and performance. Some of the key risks that the Company must manage include credit, market, liquidity, operational, interest rate, compliance, reputation and strategic risks. The Board, directly or through its appropriate committee, provides oversight and approves our various risk management policies. Management has established a risk management structure that is designed to provide a comprehensive approach for identifying, measuring, monitoring, controlling and reporting on the significant risks faced by the Company. For additional information regarding our risk management structure and framework, refer to the section “Risk Management” included in Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2015 Form 10-K.

Credit Risk Management

One of our principal business activities is the extension of credit to individuals and businesses. Our policies and the applicable laws and regulations governing the extension of credit require risk analysis, including an extensive evaluation of the purpose of the request and the borrower’s ability and willingness to repay as scheduled. Our process also includes ongoing portfolio and credit management through portfolio diversification, lending limit constraints, credit review and approval policies, and extensive internal monitoring. For additional information regarding our credit risk management policies, refer to the section “Credit Risk Management” included in Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2015 Form 10-K.

Allowance for Credit Losses

We maintain an allowance for credit losses (defined as both the allowance for loan losses and the allowance for losses on unfunded credit commitments) to absorb losses inherent in the loan portfolio as well as for unfunded credit commitments. Understanding our policies on the allowance for credit losses is fundamental to understanding our consolidated financial condition and consolidated results of operations. Accordingly, our significant accounting policies on the allowance for credit losses are discussed in detail in Note 1 to our Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” and in the section “Allowance for Credit Losses” included in Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2015 Form 10-K. For additional information regarding our allowance for loan losses, refer to Note 4 of our Consolidated Financial Statements in Part I, Item 1. “Financial Statements” of this Form 10-Q.

The allowance for loan losses was $879 million at March 31, 2016 compared with $721 million at December 31, 2015. Our ratio of allowance for loan losses to total loans held for investment was 1.11% as of March 31, 2016 and 0.93% as of December 31, 2015. The $158 million provision for loan losses during the three months ended March 31, 2016 was substantially due to continued low oil and natural gas prices, which has resulted in negative credit migration in the oil and gas sector of our loan portfolio, primarily within the PEP portfolio, and in certain loans to customers affected by low energy prices. Net loans charged-off to average total loans held for investment was 0.02% for the three months ended March 31, 2016 compared with 0.01% for the three months ended March 31, 2015. The unallocated allowance for loan losses at March 31, 2016 decreased $20 million from December 31, 2015 due to precipitation in California bringing moderate relief to drought conditions.

Nonaccrual loans were $956 million at March 31, 2016 compared with $552 million at December 31, 2015. Our ratio of nonaccrual loans to total loans held for investment increased to 1.21% at March 31, 2016 from 0.71% at December 31, 2015. Our ratio of allowance for loan losses to nonaccrual loans decreased to 91.99% at March 31, 2016 from 130.53% at December 31, 2015. Criticized credits in our PEP portfolio increased to $1.7 billion at March 31, 2016 from $1.2 billion at December 31, 2015 and $0.7 billion at September 30, 2015, driven by negative credit migration in the portfolio. Due to continued low oil and natural gas prices, we expect to see further declines in the credit quality of our PEP loans, which may result in additional increases to our allowance for credit losses and charge-offs. For further discussion see Part I, Item 1A. "Risk Factors - Adverse economic factors affecting certain industries we serve could adversely affect our business" and Part II, Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations - Concentration of Risk" in our 2015 Form 10-K. Criticized credits are those that have regulatory risk ratings of “special mention,”

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“substandard” or “doubtful.” Special mention credits are potentially weak, as the borrower has begun to exhibit deteriorating trends, which, if not corrected, could jeopardize repayment of the loan and result in further downgrade. Adversely classified credits are those that are internally risk rated as substandard or doubtful. Substandard credits have well-defined weaknesses, which, if not corrected, could jeopardize the full collection of the debt. A credit classified as doubtful has critical weaknesses that make full collection improbable on the basis of currently existing facts and conditions.

Change in the Allowance for Loan Losses

The following table sets forth a reconciliation of changes in our allowance for loan losses:

	For the Three Months Ended March 31,
(Dollars in millions)	2016			2015
Allowance for loan losses, beginning of period	$	721		$	537
(Reversal of) provision for loan losses	158			(3		)
Other	4			(1		)
Loans charged-off:
Commercial and industrial	(8		)	(1		)
Commercial mortgage	—			(3		)
Total commercial portfolio	(8		)	(4		)
Residential mortgage	1			(1		)
Home equity and other consumer loans	(2		)	(2		)
Total consumer portfolio	(1		)	(3		)
Total loans charged-off	(9		)	(7		)
Recoveries of loans previously charged-off:
Commercial and industrial	1			4
Commercial mortgage	3			—
Total commercial portfolio	4			4
Home equity and other consumer loans	1			—
Total consumer portfolio	1			—
Total recoveries of loans previously charged-off	5			4
Net loans recovered (charged-off)	(4		)	(3		)
Ending balance of allowance for loan losses	879			530
Allowance for losses on unfunded credit commitments	169			158
Total allowance for credit losses	$	1,048		$	688

Nonperforming Assets

Nonperforming assets consist of nonaccrual loans and OREO. Nonaccrual loans are those for which management has discontinued accrual of interest because there exists significant uncertainty as to the full and timely collection of either principal or interest, or such loans have become contractually past due 90 days with respect to principal or interest. OREO includes property where the Bank acquired title through foreclosure or “deed in lieu” of foreclosure. For a more detailed discussion of the accounting for nonaccrual loans, see Note 1 to our Consolidated Financial Statements included in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

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The following table sets forth the components of nonperforming assets:

	March 31, 2016		December 31, 2015		Increase (Decrease)
(Dollars in millions)					Amount			Percent
Nonaccrual loans:
Commercial and industrial	$	702	$	284	$	418		147	%
Commercial mortgage	30		37		(7		)	(19	)
Total commercial portfolio	732		321		411			128
Residential mortgage	186		190		(4		)	(2	)
Home equity and other consumer loans	32		35		(3		)	(9	)
Total consumer portfolio	218		225		(7		)	(3	)
Total nonaccrual loans, before purchased credit-impaired loans	950		546		404			74
Purchased credit-impaired loans	6		6		—			—
Total nonaccrual loans	956		552		404			73
OREO	18		21		(3		)	(14	)
Total nonperforming assets	$	974	$	573	$	401		70	%
Troubled debt restructurings:
Accruing	$	229	$	413	$	(184	)	(45	)%
Nonaccruing (included in total nonaccrual loans above)	$	598	$	409	$	189		46	%
Total troubled debt restructurings	$	827	$	822	$	5		1	%

Total nonperforming assets as of March 31, 2016 were $974 million, or 0.81% of total assets, compared with $573 million, or 0.49% of total assets, at December 31, 2015.

Troubled Debt Restructurings

TDRs are loans where we have granted a concession to a borrower as a result of the borrower experiencing financial difficulty and, consequently, we receive less than the current market-based compensation for loans with similar risk characteristics. Such loans are reviewed for impairment either individually or in pools with similar risk characteristics. Our loss mitigation strategies are designed to minimize economic loss and, at times, may result in changes to the original terms, including interest rate changes, maturity extensions, principal paydowns, covenant waivers or changes, payment deferrals, or some combination thereof. We evaluate whether these changes to the terms and conditions of our loans meet the TDR criteria after considering the specific situation of the borrower and all relevant facts and circumstances related to the modification. For our consumer portfolio segment, TDRs are typically initially placed on nonaccrual and a minimum of six consecutive months of sustained performance is required before returning to accrual status. For our commercial portfolio segment, we generally determine accrual status for TDRs by performing an individual assessment of each loan, which may include, among other factors, borrower performance under previous loan terms.

Modifications of purchased credit-impaired loans that are accounted for within loan pools do not result in the removal of these loans from the pool even if the modification would otherwise be considered a TDR. Each pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. Accordingly, modifications of loans within such pools are not considered TDRs.

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The following table provides a summary of TDRs by loan type, including nonaccrual loans and loans that have been returned to accrual status, as of March 31, 2016 and December 31, 2015. Refer to Note 4 to our Consolidated Financial Statements in Part I, Item 1. "Financial Statements" in this Form 10-Q for more information.

					As a percentage of Ending Loan Balances
(Dollars in millions)	March 31, 2016		December 31, 2015		March 31, 2016		December 31, 2015
Commercial and industrial	$	509	$	499	1.68	%	1.68	%
Commercial mortgage	17		16		0.11		0.11
Total commercial portfolio	526		515		1.09		1.10
Residential mortgage	270		276		0.98		1.01
Home equity and other consumer loans	31		31		0.92		0.97
Total consumer portfolio	301		307		0.97		1.01
Total restructured loans, excluding purchased credit-impaired loans	$	827	$	822	1.05	%	1.06	%

Loans 90 Days or More Past Due and Still Accruing

Loans held for investment 90 days or more past due and still accruing totaled $6 million and $2 million at March 31, 2016 and December 31, 2015, respectively. These amounts exclude purchased credit-impaired loans, which are generally accounted for within loan pools, of $28 million and $16 million at March 31, 2016 and December 31, 2015, respectively. The past due status of individual loans included within purchased credit-impaired loan pools is not a meaningful indicator of credit quality, as potential credit losses are measured at the loan pool level against prior expectations of cash flow performance.

Concentration of Risk

Commercial and industrial loans are extended principally to corporations, middle-market businesses and small businesses and are originated primarily through our commercial banking offices. Our commercial and industrial portfolio is comprised largely of the following industry sectors: finance and insurance, real estate and leasing, power and utilities, oil and gas, and manufacturing. No individual industry sector exceeded 10% of our total loans held for investment at either March 31, 2016 or December 31, 2015.

The Company's credit exposure within the oil and gas industry is substantially all within its commercial loan portfolio. To a much smaller extent, the Company also holds private equity investments issued by entities within the oil and gas industry. The following tables provide further information on the sectors within our oil and gas loan portfolio:

	March 31, 2016				December 31, 2015
Oil and Gas Portfolio Sectors	Percentage of Loan Commitments		Percentage of Loans Outstanding		Percentage of Loan Commitments		Percentage of Loans Outstanding
Petroleum exploration and production	81	%	87	%	78	%	81	%
Transportation	10		10		11		14
Service	2		2		2		3
Other	7		1		9		2

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	March 31, 2016						December 31, 2015						September 30, 2015
(Dollars in millions)	Total		Criticized		Nonaccrual		Total		Criticized		Nonaccrual		Total		Criticized		Nonaccrual
Total Oil and Gas Portfolio
Loan commitments	$	6,832	$	2,713	$	547	$	7,351	$	2,156	$	175	$	7,495	$	838	$	46
Loans outstanding	3,536		1,709		547		3,654		1,226		175		3,612		670		46
Allowance for credit losses	424						329						136
Allowance for loan losses	392						297						120
Petroleum Exploration and Production Sector of Portfolio
Loan commitments	$	5,519	$	2,701	$	547	$	5,768	$	2,156	$	175	$	6,147	$	838	$	46
Loans outstanding	3,080		1,705		547		2,943		1,226		175		3,155		670		46
Allowance for credit losses	415						319						127
Allowance for loan losses	386						291						114

As of March 31, 2016 and December 31, 2015, approximately 81% and 82% of our PEP portfolio was comprised of reserve-based commitments, respectively. Reserve-based lending typically consists of loans collateralized with oil and gas reserves. The Company periodically resets its forward-looking view of oil and natural gas prices used to calculate a borrower's reserve value as part of its assessment of the commitment amount.

As of March 31, 2016 and December 31, 2015, respectively, approximately 73% and 75% of our oil and gas commitments consist of Shared National Credits, which are loans or commitments with a total size of $20 million or more that are shared among three or more unaffiliated banks. We were the lead agent for 24% and 27% of these commitments as of March 31, 2016 and December 31, 2015, respectively. Second lien and junior commitments were de minimis at March 31, 2016.

The allowance for loan losses for the oil and gas sector is primarily comprised of a segment attribution and formulaic reserves based on internal ratings. Charge-offs within the oil and gas portfolio were $6 million for the three months endedMarch 31, 2016 and de minimis for the three months endedMarch 31, 2015. The Company manages risk on this portfolio by proactively risk rating and downgrading loans based on revised cash flow expectations and collateral assessments.

Construction and commercial mortgage loans are secured by deeds of trust or mortgages. Construction loans are extended primarily to commercial property developers and to residential builders. At March 31, 2016, 56% of the Company’s construction loan portfolio was concentrated in California, 11% to borrowers in the state of New York and 7% to borrowers in the state of Washington. The commercial mortgage loan portfolio consists of loans secured by commercial income properties. At March 31, 2016, 65% of the Company’s commercial mortgage loans were made to borrowers located in California, 7% to borrowers in the state of Washington and 6% to borrowers in New York.

Residential mortgage loans are originated and secured by one-to-four family residential properties, through our multiple channel network, including branches, private bankers, mortgage brokers, telephone services and web-based and mobile internet banking applications. We do not have a program for originating or purchasing subprime loan products and we hold the majority of the loans we originate.

At March 31, 2016, payment terms on 44% of our residential mortgage loans require a monthly payment that covers the full amount of interest due, but does not reduce the principal balance. At origination, these interest-only loans had strong credit profiles and had weighted average LTV ratios of approximately 66%. The remainder of the portfolio consists of regularly amortizing loans.

Home equity and other consumer loans are originated principally through our branch network and Private Banking offices. Approximately 33% of the home equity loans and lines were supported by first liens on residential properties as of March 31, 2016 and December 31, 2015. To manage risk associated with lending commitments, we review all equity-secured lines annually for creditworthiness and may reduce or freeze limits, to the extent permitted by laws and regulations. See Note 4 to our Consolidated Financial Statements in Part I, Item 1. “Financial

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Statements” in this Form 10-Q for additional information on refreshed FICO scores and refreshed LTV ratios for our residential mortgage loans at March 31, 2016 and December 31, 2015.

As of March 31, 2016, our sovereign and non-sovereign debt exposure to European countries was not material. In addition, industry exposures to metals and mining were less than 1% of total loans held for investment. 

Market Risk Management

The objective of market risk management is to mitigate any adverse impact on earnings and capital arising from changes in interest rates and other market variables. Market risk management supports our broad objective of enhancing shareholder value, which encompasses the achievement of stable earnings growth while promoting capital stability over time. Market risk is defined as the risk of loss arising from an adverse change in the market value of financial instruments caused by fluctuations in market prices or rates. The primary market risk to which we are exposed is interest rate risk. Substantially all of our interest rate risk arises from instruments, positions and transactions entered into for purposes other than trading. These include loans, securities, deposits, borrowings and derivative financial instruments. To a much lesser degree, we are exposed to market risk in our trading portfolio, which is primarily composed of derivative contracts the Company enters into as a financial intermediary for customers.

Market Risk Governance

The ALM Policy, adopted by the Audit & Finance Committee of the Board of Directors, governs the Company’s management and oversight of market risk. This policy also governs liquidity risk and guides the Company's investment, funding, and derivative activities. The ALM Policy establishes the Company’s risk tolerance by outlining standards for measuring market and liquidity risks, creates Board-level limits for specific market risks, establishes ALCO responsibilities and requires independent review and oversight of market and liquidity risk activities.

ARC, composed of selected senior officers of the Company, supports the ALM Policy setting process by striving to ensure that the Company has an effective process to identify, monitor, measure and manage market risk as required by the ALM Policy. ARC provides broad and strategic guidance for market risk management by defining the risk and return direction for the Company. ALCO approves the investment, derivatives and trading policies that govern the Company’s activities. ALCO is responsible for the approval of specific market risk management programs, including those related to interest rate hedging, investment securities and wholesale funding.

The Treasurer is primarily responsible for the implementation of market risk management strategies approved by ALCO and for operational management of market risk, as defined above, through the funding, investment and derivatives hedging activities of Corporate Treasury. The Company's Investment Banking & Markets segment is responsible for managing price risk through its trading activities. The Market Risk Management unit is responsible for the monitoring of market risk and functions independently of all operating and management units.

The Company has separate and distinct methods for managing the market risk associated with our asset and liability management activities and our trading activities, as described below.

Interest Rate Risk Management (Other Than Trading)

ALCO monitors interest rate risk on a monthly basis through a variety of modeling techniques that are used to quantify the sensitivity of net interest income to changes in interest rates. Our net interest income sensitivity analysis typically involves a simulation in which we estimate the net interest income impact of gradual parallel shifts in the yield curve of up and down 200 basis points over a 12-month horizon using a forecasted balance sheet. Due to the ongoing low interest rate environment, the 200 basis point decrease was replaced with a 100 basis point decrease.

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Net Interest Income Sensitivity

The table below presents the estimated increase (decrease) in net interest income given a gradual parallel shift in the yield curve up 200 basis points and down 100 basis points over a 12-month horizon.

(Dollars in millions)	March 31, 2016			December 31, 2015
Effect on net interest income:
Increase 200 basis points	$	97.8		$	56.6
as a percentage of base case net interest income	3.29		%	1.92		%
Decrease 100 basis points	$	(93.3	)	$	(40.4	)
as a percentage of base case net interest income	(3.14		)%	(1.37		)%

An increase in rates increases net interest income. During the three months endedMarch 31, 2016, the Company's asset sensitive profile increased due to changes in both the current balance sheet composition and forecasted balance sheet activity over the next twelve months. We believe that our simulation provides management with a comprehensive view of the sensitivity of net interest income to changes in interest rates over the measurement horizon. However, as with any financial model, the underlying assumptions are inherently uncertain and subject to refinement. In particular, two significant models used in interest rate risk measurement address residential mortgage prepayment speeds and non-maturity deposit rate and balance behaviors. The mortgage prepayment model is periodically calibrated to reflect changes in customer behavior. Model performance may be adversely affected by rapid changes in interest rates, home prices and the credit environment. The deposit model uses the Company’s historical deposit pricing to forecast future deposit pricing in its scenarios. Management’s response to future rate scenarios may deviate from historic responses as the 2008 financial crisis may have changed future competitive responses and customer behaviors with respect to deposit repricing. Actual results may differ from those derived in the simulation analysis due to unexpected market events, unanticipated changes in customer behavior, market interest rates, product pricing, and investment, funding and hedging activities.

Investment Securities

Our ALM securities portfolio includes both securities available for sale and securities held to maturity. At March 31, 2016 and December 31, 2015, our ALM securities portfolio fair values were $22.2 billion and $22.9 billion, respectively.

Our ALM securities portfolio is comprised of RMBS, Cash Flow CLOs, CMBS, U.S. Treasury securities and government-sponsored agency securities. The portfolio had an expected weighted average life of 3.8 years at March 31, 2016. At March 31, 2016, approximately $0.9 billion of the portfolio was pledged to secure trust and public deposits and for other purposes as required or permitted by law. During the first quarter of 2016, we purchased $1.3 billion and sold $1.7 billion of securities, as part of our investment portfolio strategy, while $0.7 billion of ALM securities matured, were paid down, or were called.

Based on current prepayment projections, the estimated ALM securities portfolio’s effective duration was 2.8 years at March 31, 2016, compared with 3.4 years at December 31, 2015. Effective duration is a measure of price sensitivity of a bond portfolio to immediate parallel shifts in interest rates. An effective duration of 2.8 years suggests an expected price decrease of approximately 2.8% for an immediate 1.0% parallel increase in interest rates.

In addition to our ALM securities, our securities available for sale portfolio includes approximately $1.6 billion of direct bank purchase bonds that are largely managed within our Regional Bank and U.S. Wholesale Banking operating segments. These instruments are accounted for as securities, but underwritten as loans with terms that are closely aligned with traditional commercial loan features, and are subject to national bank regulatory lending authority standards. These instruments typically are not issued in bearer form, nor are they registered with the SEC or the Depository Trust Company. Additionally, these instruments generally contain certain transferability restrictions and are not assigned external credit ratings. 

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ALM and Other Risk Management Derivatives

Since December 31, 2015, the notional amount of the ALM derivatives portfolio decreased by $1.0 billion as we terminated receive fixed interest rate swap contracts to hedge floating rate commercial loans. The gross positive fair value of ALM derivatives increased during the first quarter of 2016 primarily as a result of changes in interest rate swap rates.

Other risk management derivatives are primarily used to manage non-interest rate related risks. For additional discussion of derivative instruments and our hedging strategies, see Note 9 to our Consolidated Financial Statements in Part I, Item 1. “Financial Statements” of this Form 10-Q and Note 11 to our Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

(Dollars in millions)	March 31, 2016		December 31, 2015		Increase (Decrease)
Total gross notional amount of ALM and other risk management derivatives
ALM derivatives:
Interest rate swap receive fixed contracts	$	14,800	$	15,750	$	(950	)
Total ALM derivatives	14,800		15,750		(950		)
Other risk management derivatives	283		251		32
Total ALM and other risk management derivatives	$	15,083	$	16,001	$	(918	)
Fair value of ALM and other risk management derivatives
ALM derivatives:
Gross positive fair value	$	271	$	73	$	198
Gross negative fair value	—		14		(14		)
Positive (negative) fair value of ALM derivatives, net	271		59		212
Other risk management derivatives:
Gross positive fair value	5		5		—
Gross negative fair value	2		2		—
Positive (negative) fair value of other risk management derivatives, net	3		3		—
Positive (negative) fair value of ALM and other risk management derivatives, net	$	274	$	62	$	212

Trading Activities

We enter into trading account activities primarily as a financial intermediary for customers. By acting as a financial intermediary, we are able to provide our customers with access to a range of products from the securities, foreign exchange and derivatives markets. We generally take offsetting positions in these transactions to mitigate our exposure to market risk.

We utilize a combination of position limits, VaR, and stop-loss limits, applied at an aggregated level and to various sub-components within those limits. Positions are controlled and reported both in notional and VaR terms. Our calculation of VaR estimates how high the loss in fair value might be, at a 99% confidence level, due to an adverse shift in market prices over a period of ten business days. VaR at the trading activity level is managed within the maximum limit of $14 million established by Board policy for total trading positions. The VaR model incorporates assumptions on key parameters, including holding period and historical volatility.

Consistent with our business strategy of focusing on the sale of capital markets products to customers, we manage our trading risk exposures at relatively low levels. Our foreign exchange business continues to derive the majority of its revenue from customer-related transactions. Similarly, we continue to generate most of our securities trading income from customer-related transactions.

As of March 31, 2016, notional amounts held for customer accommodation purposes were comprised of $100.0 billion of interest rate derivative contracts, $5.3 billion of foreign exchange derivative contracts and $2.6 billion of commodity derivative contracts. Notional amounts at March 31, 2016 also included $1.0 billion, $0.8 billion and $3.2 billion of foreign exchange, commodity and equity contracts, respectively, representing our exposure to the embedded bifurcated derivatives and the related hedges contained in our market-linked CDs.

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The following table provides the notional value and the fair value of our trading derivatives portfolio as of March 31, 2016 and December 31, 2015, and the change in fair value between March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016		December 31, 2015		Increase (Decrease)
Total gross notional amount of positions held for trading purposes:
Interest rate contracts	$	100,017	$	100,932	$	(915	)
Commodity contracts	3,410		3,775		(365		)
Foreign exchange contracts(1)	6,307		5,043		1,264
Equity contracts	3,155		3,351		(196		)
Total	$	112,889	$	113,101	$	(212	)
Fair value of positions held for trading purposes:
Gross positive fair value	$	2,062	$	1,749	$	313
Gross negative fair value	1,993		1,630		363
Positive fair value of positions, net	$	69	$	119	$	(50	)

(1) Excludes spot contracts with a notional amount of $0.8 billion and $0.5 billion at March 31, 2016 and December 31, 2015, respectively.

Liquidity Risk Management

Liquidity risk is the risk that an institution's financial condition or overall safety and soundness is adversely affected by an inability, or perceived inability, to meet its contractual, including contingent, obligations. The objective of liquidity risk management is to maintain a sufficient amount of liquidity and diversity of funding sources to allow an institution to meet obligations in both stable and adverse conditions.

The management of liquidity risk is governed by the ALM Policy under the oversight of ALCO and the Audit & Finance Committee of the Board. ALCO oversees liquidity risk management activities.  Corporate Treasury formulates the liquidity and contingency planning strategies for the Company and the Bank and is responsible for identifying, managing and reporting on liquidity risk. Market Risk Management partners with Corporate Treasury to establish sound policies and effective risk and independent monitoring controls. We are also subject to a Contingency Funding Plan that identifies actions to be taken to help ensure adequate liquidity if an event should occur that disrupts or adversely affects the normal funding activities of the Company or the Bank.

Liquidity risk is managed using a total balance sheet perspective that analyzes all sources and uses of liquidity including loans, investments, deposits and borrowings, as well as off-balance sheet exposures. Management does not rely on any one source of liquidity and manages availability in response to changing balance sheet needs. Various tools are used to measure and monitor liquidity, including pro-forma forecasting of the sources and uses of cash flows over a 12-month time horizon, stress testing of the pro-forma forecast and assessment of the Bank’s capacity to raise incremental unsecured and secured funding. Stress testing, which incorporates both bank-specific, and systemic market scenarios, as well as a combination scenario that adversely affects the Bank’s liquidity position and profile, facilitates the identification of appropriate remedial measures to help ensure that the Bank maintains adequate liquidity in adverse conditions. Such measures may include extending the maturity profile of liabilities, optimizing liability levels through pricing strategies, adding new funding sources, altering dependency on certain funding sources and financing or selling assets.

Our primary sources of liquidity are core deposits (described below), our securities portfolio and wholesale funding. Wholesale funding includes certain deposits, unsecured funds raised from interbank and other sources, both domestic and international, and senior and subordinated debt. Also included are secured funds raised by selling securities under repurchase agreements and by borrowing from the FHLB of San Francisco. We evaluate and monitor the stability and reliability of our various funding sources to help ensure that we have sufficient liquidity in adverse circumstances. We generally view our core deposits to be relatively stable. Secured borrowings via repurchase agreements and advances from the FHLB of San Francisco are also recognized as highly reliable funding sources, and we, therefore, maintain access to these sources primarily to meet our contingency funding needs.

Core deposits, which exclude brokered deposits, foreign time deposits, domestic time deposits greater than $250,000, and certain other deposits not considered to be core customer relationships, provide us with a

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sizable source of relatively stable and low-cost funds. At March 31, 2016, our core deposits totaled $74.9 billion and our total loan-to-total core deposit ratio was 105.9%. Total deposits were up$5.2 billion from $84.3 billion at December 31, 2015 to $89.5 billion at March 31, 2016. The increase in deposits is substantially due to a single short-term noninterest bearing deposit at March 31, 2016. In conjunction with expected shifts in total deposits, the Company decreased wholesale funding by $0.8 billion to $14.7 billion at March 31, 2016 from $15.5 billion at December 31, 2015.

The Bank and the Company maintain a variety of other funding sources, secured and unsecured, which management believes will be adequate to meet the Bank and the Company's liquidity needs, including the following:

• The Bank has secured borrowing facilities with the FHLB of San Francisco and the Federal Reserve Bank. As of March 31, 2016, the Bank had no borrowings outstanding with the FHLB of San Francisco, and the Bank had a remaining combined unused borrowing capacity from the FHLB of San Francisco and the Federal Reserve Bank of $33.5 billion.  

• Our securities portfolio provides liquidity through either securities sales or repurchase agreements. Total unpledged securities increased by $1.2 billion to $21.5 billion at March 31, 2016 from $20.3 billion at December 31, 2015. 

• The Bank has a $12.0 billion unsecured bank note program. Available funding under the bank note program was $5.9 billion at March 31, 2016. We do not have any firm commitments in place to sell additional notes under this program.

• The Company has direct access to the capital markets through a $3.6 billion shelf registration statement with the SEC. As of March 31, 2016, $1.4 billion of debt or other securities were available for issuance. We do not have any firm commitments in place to sell additional securities under this shelf registration statement. 

• MUAH has access to a $500 million, three-year unsecured committed line of credit from BTMU, which is available for contingent liquidity purposes.

We believe that these sources provide a stable funding base. As a result, we have not historically relied on BTMU for our normal funding needs. However, from time to time the Company may issue long-term debt to BTMU. As of March 31, 2016, total long-term debt issued to BTMU was $4.6 billion.

Our costs and ability to raise funds in the capital markets are influenced by our credit ratings. The following table provides our credit ratings as of March 31, 2016:

		MUFG Union Bank, N.A.		MUFG Americas Holdings Corporation
		Deposits	Senior Debt	Senior Debt
Standard & Poor's	Long-term	—	A+	A
	Short-term	—	A-1	A-1
Moody's	Long-term	Aa2	A2	A3
	Short-term	P-1	P-1	—
Fitch	Long-term	A+	A	A
	Short-term	F1	F1	F1

For further information, including information about rating agency assessments, see “The Bank of Tokyo-Mitsubishi UFJ’s and Mitsubishi UFJ Financial Group’s credit ratings and financial or regulatory condition could adversely affect our operations” and "Our credit ratings are important in order to maintain liquidity" in Part I, Item 1A. "Risk Factors" in our 2015 Form 10-K.

The OCC, the Federal Reserve and the FDIC jointly adopted a final rule to implement a standardized quantitative liquidity requirement generally consistent with the LCR standards established by the BCBS. The LCR rule is designed to ensure that covered banking organizations maintain an adequate level of cash and HQLA, such as central bank reserves and government and corporate debt, to meet estimated net liquidity needs in a

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short-term stress scenario using liquidity inflow and outflow assumptions provided in the rule (net cash outflow). The phase-in period began on January 1, 2016, with full compliance required by January 1, 2017. The Company is in compliance with the LCR requirements.

For further information regarding this rule, see "Supervision and Regulation-Regulatory Capital and Liquidity Standards-Liquidity Coverage Ratio" in Part I, Item 1. and “The effects of changes or increases in, or supervisory enforcement of, banking or other laws and regulations or governmental fiscal or monetary policies could adversely affect us” in Part I, Item 1A. “Risk Factors” in our 2015 Form 10-K.

Operational Risk Management

Operational risk is defined as the risk of loss resulting from inadequate or failed internal processes, people and systems or from external events. This definition includes legal risk, which includes exposure to fines, penalties, or punitive damages resulting from supervisory actions, as well as private settlements, but excludes strategic and reputation risk. In particular, information security is a significant operational risk element for the Company and includes the risk of losses resulting from cyber attacks. See “We are subject to operational risks, including cyber-security risks” in Part I, Item 1A. “Risk Factors” in our 2015 Form 10-K. Operational risk is mitigated through a system of internal controls that are designed to keep these risks at appropriate levels. For additional information regarding our operational risk management policies, refer to the section “Operational Risk Management” included in Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2015 Form 10-K.

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Business Segments

We have four reportable segments: Regional Bank, U.S. Wholesale Banking, Transaction Banking, and Investment Banking & Markets. For a more detailed description of these reportable segments, refer to Note 13 to our Consolidated Financial Statements included in Part I, Item 1. “Financial Statements” of this Form 10-Q.

Unlike U.S. Generally Accepted Accounting Principles (GAAP), there is no standardized or authoritative guidance for management accounting. Consequently, reported results are not necessarily comparable with those presented by other companies and they are not necessarily indicative of the results that would be reported by our business units if they were unique economic entities. The information set forth in the tables that follow is prepared using various management accounting methodologies to measure the performance of the individual segments. During the normal course of business, the Company occasionally changes or updates its management accounting methodologies or organizational structure. For a description of these methodologies, see Note 13 to our Consolidated Financial Statements included in Part I, Item 1. “Financial Statements” of this Form 10-Q.

Regional Bank

The Regional Bank offers a range of banking products and services to individuals, including high net worth individuals and institutional clients, and businesses generally with up to $500 million in annual revenue. Products and services are delivered generally through a network of branches, private banking offices, ATMs, broker mortgage referrals, relationship managers, telephone services, and web-based and mobile banking applications. These products and services include mortgages, home equity lines of credit, consumer and commercial loans, deposit accounts, financial planning and investments. The Regional Bank also provides a broad spectrum of commercial credit products including commercial loans, accounts receivable, inventory, and trade financing primarily to corporate customers based on the U.S. West Coast, and real estate financing to professional real estate investors and developers nationwide.

The following table sets forth the results for the Regional Bank segment:

Regional Bank
	For the Three Months Ended   March 31,					Increase (Decrease)
(Dollars in millions)	2016			2015		Amount			Percent
Results of operations - Market View
Net interest income	$	482		$	479	$	3		1		%
Noninterest income	114			111		3			3
Total revenue	596			590		6			1
Noninterest expense	399			425		(26		)	(6	)
(Reversal of) provision for credit losses	(2		)	6		(8		)	(133	)
Income before income taxes and including noncontrolling interests	199			159		40			25
Income tax expense	61			45		16			36
Net income attributable to MUAH	$	138		$	114	$	24		21
Average balances - Market View
Total loans held for investment	$	57,117		$	57,839	$	(722	)	(1	)	%
Total assets	61,903			62,356		(453		)	(1	)
Total deposits	51,815			50,379		1,436			3

Noninterest expense decreased during the first quarter of 2016 due to certain nonrecurring adjustments in the first quarter of 2015 and the impact of expense reduction measures.     

33

U.S. Wholesale Banking

U.S. Wholesale Banking provides commercial lending products, including commercial loans, lines of credit and project financing, to corporate customers with revenues greater than $500 million. The segment employs an industry-focused strategy including dedicated coverage teams in General Industries, Power and Utilities, Oil and Gas, Telecom and Media, Technology, Healthcare and Nonprofit, Public Finance, and Financial Institutions (predominantly Insurance and Asset Managers). By working with the Company's other segments, U.S. Wholesale Banking offers its customers a range of noncredit services, which include global treasury management, capital market solutions, and various foreign exchange, interest rate risk and commodity risk management products.

The following table sets forth the results for the U.S. Wholesale Banking segment:

U.S. Wholesale Banking
	For the Three Months Ended   March 31,					Increase (Decrease)
(Dollars in millions)	2016			2015		Amount			Percent
Results of operations - Market View
Net interest income	$	108		$	100	$	8		8		%
Noninterest income	28			32		(4		)	(13	)
Total revenue	136			132		4			3
Noninterest expense	37			43		(6		)	(14	)
(Reversal of) provision for credit losses	126			2		124			nm
Income before income taxes and including noncontrolling interests	(27		)	87		(114		)	(131	)
Income tax expense (benefit)	(11		)	34		(45		)	(132	)
Net income attributable to MUAH	$	(16	)	$	53	$	(69	)	(130	)
Average balances - Market View
Total loans held for investment	$	13,646		$	12,206	$	1,440		12		%
Total assets	14,859			13,400		1,459			11
Total deposits	8,576			8,827		(251		)	(3	)

nm = not meaningful

Net interest income increased as a result of higher average loan balances, primarily in the technology and power and utilities sectors. Noninterest income was lower in the first quarter of 2016 due in part to lower syndication fees. The provision for credit losses in the first quarter of 2016 was primarily due to increased reserves for the oil and gas portfolio.

34

Transaction Banking

Transaction Banking works alongside the Company's other segments to provide working capital management and asset servicing solutions, including deposits and treasury management, trade finance, and institutional trust and custody, to the Company's customers. The client base consists of financial institutions, corporations, government agencies, insurance companies, mutual funds, investment managers and non-profit organizations.

The following table sets forth the results for the Transaction Banking segment:

Transaction Banking
	For the Three Months Ended   March 31,				Increase (Decrease)
(Dollars in millions)	2016		2015		Amount			Percent
Results of operations - Market View
Net interest income	$	121	$	115	$	6		5		%
Noninterest income	46		43		3			7
Total revenue	167		158		9			6
Noninterest expense	111		100		11			11
(Reversal of) provision for credit losses	2		1		1			100
Income before income taxes and including noncontrolling interests	54		57		(3		)	(5	)
Income tax expense	21		22		(1		)	(5	)
Net income attributable to MUAH	$	33	$	35	$	(2	)	(6	)
Average balances - Market View
Total loans held for investment	$	60	$	44	$	16		36		%
Total assets	1,925		1,714		211			12
Total deposits	35,269		37,028		(1,759		)	(5	)

Transaction Banking earns revenue primarily from a net interest income funds transfer pricing credit on deposit liabilities, as well as service charges on deposit accounts and trust management fees. Net interest income increased in the first quarter of 2016 despite lower deposit balances due to an increase in the funds transfer pricing credit rate. Noninterest income increased due to an increase in trust and investment management fees. The increase in noninterest expense includes the impact of customer product development activities and fixed asset impairments.     

35

Investment Banking & Markets

Investment Banking & Markets, which includes Global Capital Markets of the Americas, works with the Company's other segments to provide customers structured credit services, including project finance, leasing and equipment finance, commercial finance, funds finance and securitizations. Investment Banking & Markets also provides capital markets solutions, including syndicated loans, equity and debt underwriting, tax equity and merchant banking investments; risk management solutions, including foreign exchange, interest rate and energy risk management solutions; and facilitates merchant and investment banking-related transactions.

The following table sets forth the results for the Investment Banking & Markets segment:

Investment Banking & Markets
	For the Three Months Ended   March 31,						Increase (Decrease)
(Dollars in millions)	2016			2015			Amount			Percent
Results of operations - Market View
Net interest income	$	59		$	60		$	(1	)	(2	)	%
Noninterest income	25			31			(6		)	(19	)
Total revenue	84			91			(7		)	(8	)
Noninterest expense	35			30			5			17
(Reversal of) provision for credit losses	31			(7		)	38			nm
Income before income taxes and including noncontrolling interests	18			68			(50		)	(74	)
Income tax expense (benefit)	(12		)	13			(25		)	(192	)
Net income attributable to MUAH	$	30		$	55		$	(25	)	(45	)
Average balances - Market View
Total loans held for investment	$	8,829		$	8,501		$	328		4		%
Total assets	11,865			11,123			742			7
Total deposits	2,861			3,254			(393		)	(12	)

nm = not meaningful

Noninterest income decreased in the first quarter of 2016 largely due to losses and impairments on oil and gas-related private equity investments, partially offset by an increase in trading account activities. The provision for credit losses in the first quarter of 2016 was due to the deterioration in credit quality of certain energy customers affected by continued low oil and gas prices. The reversal of the provision for credit losses in the first quarter of 2015 reflected low loss experience in the loan portfolio. The income tax benefit during the quarter was due to tax credits from renewable energy investments.

36

Other

"Other" includes the Asian Corporate Banking segment, which offers a range of credit, deposit, and investment management products and services to companies located primarily in the U.S. that are affiliated with companies headquartered in Japan and other Asian countries. In addition, "Other" is comprised of certain corporate activities of the Company; the funds transfer pricing center and credits allocated to the reportable segments; the residual costs of support groups; fees from affiliates and noninterest expenses associated with BTMU's U.S. branch banking operations; the unallocated allowance; goodwill, intangible assets, and the related amortization/accretion associated with the Company's privatization transaction; the elimination of the fully taxable-equivalent basis amount; and the difference between the marginal tax rate and the consolidated effective tax rate; Corporate Treasury, which is responsible for ALM, wholesale funding, and the ALM investment securities and derivatives hedging portfolios; and the FDIC covered assets.

The following table sets forth the results for Other:

Other
	For the Three Months Ended   March 31,						Increase (Decrease)
(Dollars in millions)	2016			2015			Amount			Percent
Results of operations - Market View
Net interest income	$	27		$	20		$	7		35		%
Noninterest income	232			166			66			40
Total revenue	259			186			73			39
Noninterest expense	342			296			46			16
(Reversal of) provision for credit losses	5			3			2			67
Income before income taxes and including noncontrolling interests	(88		)	(113		)	25			22
Income tax expense (benefit)	(2		)	(44		)	42			95
Net income (loss) including noncontrolling interests	(86		)	(69		)	(17		)	(25	)
Deduct: net loss from noncontrolling interests	12			5			7			140
Net income attributable to MUAH	$	(74	)	$	(64	)	$	(10	)	(16	)
Average balances - Market View
Total loans held for investment	$	239		$	250		$	(11	)	(4	)	%
Total assets	27,460			26,690			770			3
Total deposits	6,516			5,647			869			15

Net interest income increased during the first quarter of 2016 due to higher average securities balances and an increase in the notional amount of receive fixed interest rate swaps used to hedge floating rate commercial loans. An increase in staff costs - support services and related fees from affiliates associated with the business integration initiative contributed to increases in noninterest income and noninterest expense. Noninterest income also increased due to a decrease in FDIC indemnification amortization expense.

37

Critical Accounting Estimates

MUAH’s consolidated financial statements are prepared in accordance with GAAP, which include management estimates and judgments. The financial information contained within our statements is, to a significant extent, financial information that is based on estimates used to measure the financial effects of transactions and events that have already occurred. A variety of factors could affect the ultimate value that is obtained either when earning income, recognizing an expense, recovering an asset or relieving a liability. For example, we use discount factors and other assumptions to measure certain assets and liabilities. A change in the discount factor or other important assumptions could significantly increase or decrease the reported amounts of those assets and liabilities and result in either a beneficial or an adverse impact to our financial results. We use historical loss factors, adjusted for current conditions, to estimate the credit losses inherent in our loan and lease portfolios held for investment and certain off-balance sheet commitments on the balance sheet date. Actual losses could differ significantly from the loss factors that we use. Other significant estimates that we use include the valuation of certain derivatives and securities, the assumptions used in measuring our transfer pricing revenue, pension obligations, goodwill impairment, and assumptions regarding our effective tax rates.

Management has reviewed and approved these critical accounting policies and has discussed these policies with the Audit & Finance Committee.

Understanding our accounting policies is fundamental to understanding our consolidated financial condition and consolidated results of operations. Accordingly, both our critical accounting estimates and our significant accounting policies are discussed in detail in our 2015 Form 10-K. There have been no material changes to these critical accounting estimates during the first quarter of 2016.

Disclosure of Iranian Activities under Section 13(r) of the Securities Exchange Act of 1934

We are disclosing the following information pursuant to Section 13(r) of the Exchange Act, which requires an issuer to disclose whether it or any of its affiliates knowingly engaged in certain activities, transactions or dealings relating to Iran or with natural persons or entities designated by the U.S. government under specified Executive Orders. The scope of activities that must be reported includes activities not prohibited by U.S. law and conducted outside the United States in compliance with applicable local law. Because we are indirectly wholly-owned by MUFG, a Japanese corporation, our disclosure includes activities, transactions or dealings conducted outside the United States by non-U.S. affiliates of MUFG which are not controlled by us. We have requested that MUFG provide us a description of reportable activity under Section 13(r) and have received the following information:

During the quarter ended March 31, 2016, a non-U.S. subsidiary of MUFG engaged in business activities with entities in or affiliated with Iran, including counterparties owned or controlled by the Iranian government. These activities were consistent with rules and regulations applicable to MUFG’s non-U.S. subsidiary. Specifically, MUFG’s non-U.S. banking subsidiary, BTMU, issued letters of credit and guarantees and provided remittance and other settlement services mainly in connection with customer transactions related to the purchase and exportation of Iranian crude oil to Japan, and in some cases, in connection with other petroleum-related transactions with Iran by its customers. These transactions did not involve U.S. dollars nor clearing services of U.S. banks for the settlement of payments, and were reviewed for compliance with applicable U.S. and non-U.S. laws and regulations. For the quarter ended March 31, 2016, the aggregate interest and fee income relating to these transactions was less than ¥30 million, representing less than 0.005 percent of MUFG’s total interest and fee income. Some of these transactions were conducted through the use of non-U.S. dollar correspondent accounts and other similar settlement accounts maintained with BTMU outside the United States by Iranian financial institutions and other entities in or affiliated with Iran. In addition to such accounts, BTMU receives deposits in Japan from and provides settlement services in Japan to fewer than ten Iranian government-related entities and fewer than 100 Iranian government-related individuals such as Iranian diplomats, and maintains settlement accounts outside the United States for certain other financial institutions specified in Executive Order 13382, which settlement accounts were frozen in accordance with applicable laws and regulations. For the quarter ended March 31, 2016, the average aggregate balance of deposits held in these accounts represented less than 0.05 percent of the average balance of MUFG’s total deposits. The fee income from the transactions attributable to these account holders was less than ¥3 million, representing less than 0.001 percent of MUFG’s total fee income. BTMU also holds loans that were arranged prior to changes in applicable laws and regulations to borrowers in or affiliated with Iran, including entities owned by the Iranian government, the outstanding balance

38

of which was less than ¥200 million, representing less than 0.001 percent of MUFG’s total loans, as of March 31, 2016. For the quarter ended March 31, 2016, the aggregate gross interest and fee income relating to these loan transactions was less than ¥20 million, representing less than 0.005 percent of MUFG’s total interest and fee income.

In addition, in accordance with the Joint Plan of Action agreed to among the P5+1 (the United States, United Kingdom, Germany, France, Russia and China) and Iran in November 2013, BTMU has been providing settlement services in connection with humanitarian trade to assist Iran in meeting its domestic needs, namely food, agricultural products, medicine and medical devices, since April 2014. The overall framework for these settlement services was based on an agreement between U.S. and Japanese authorities, and the relevant U.S. regulator has authorized the settlement services as compliant with applicable U.S. laws and regulations. The purchasers of the humanitarian goods were entities in or affiliated with Iran, including entities related to the Iranian government. The sellers of the humanitarian goods were entities permitted by U.S. and Japanese regulators. These transactions did not involve U.S. dollars nor clearing services of U.S. banks for the settlement of payments. These transactions were conducted through the use of special purpose yen accounts maintained with BTMU outside the United States by an Iranian financial institution which is affiliated with the Iranian government but through which these transactions were permitted to be settled. We understand that BTMU intends to continue to provide the settlement services in connection with the exports of humanitarian goods to Iran in close coordination with U.S. and Japanese authorities.

We understand that BTMU will continue to participate in these types of transactions. In addition, following Implementation Day under the Joint Comprehensive Plan of Action, and the relaxation of U.S., European Union, Japanese and other sanctions against Iran, we understand that BTMU has begun to participate in a broader range of banking transactions involving Iran, subject to remaining Japanese and international sanctions.

Item 3.   Quantitative and Qualitative Disclosures About Market Risk

A discussion of our market risk exposure is incorporated by reference to Part I, Item 2. of this Form 10-Q under the caption “Risk Management - Market Risk Management” and to Part II, Item 1A. of this Form 10-Q under the caption “Risk Factors.”

Item 4.   Controls and Procedures

Disclosure Controls and Procedures. Our Chief Executive Officer (principal executive officer) and Chief Financial Officer (principal financial officer) have concluded that the design and operation of our disclosure controls and procedures are effective as of March 31, 2016. This conclusion is based on an evaluation conducted under the supervision, and with the participation, of management. Disclosure controls and procedures are those controls and procedures that are designed to ensure that information required to be disclosed in this filing is recorded, processed, summarized and reported in a timely manner and in accordance with the SEC’s rules and regulations and to ensure that such information is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Internal Control Over Financial Reporting. During the first quarter of 2016, there were no changes in our internal control over financial reporting that materially affected, or were reasonably likely to materially affect, our internal control over financial reporting.

39

PART I. FINANCIAL INFORMATION

Item 1.   Financial Statements

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Statements of Income

(Unaudited)

	For the Three Months Ended   March 31,
(Dollars in millions)	2016		2015
Interest Income
Loans	$	697	$	678
Securities	109		102
Other	6		3
Total interest income	812		783
Interest Expense
Deposits	49		52
Commercial paper and other short-term borrowings	1		1
Long-term debt	65		47
Total interest expense	115		100
Net Interest Income	697		683
Provision for credit losses	162		3
Net interest income after provision for credit losses	535		680
Noninterest Income
Service charges on deposit accounts	49		49
Trust and investment management fees	31		28
Trading account activities	13		8
Securities gains, net	13		3
Credit facility fees	27		30
Merchant banking fees	14		20
Brokerage commissions and fees	13		13
Card processing fees, net	9		8
Fees from affiliates	200		166
Other, net	26		10
Total noninterest income	395		335
Noninterest Expense
Salaries and employee benefits	543		567
Net occupancy and equipment	76		80
Professional and outside services	102		77
Software	36		28
Regulatory assessments	14		13
Intangible asset amortization	7		10
Other	98		74
Total noninterest expense	876		849
Income before income taxes and including noncontrolling interests	54		166
Income tax expense	17		34
Net Income Including Noncontrolling Interests	37		132
Deduct: Net loss from noncontrolling interests	12		5
Net Income Attributable to MUAH	$	49	$	137

See accompanying notes to consolidated financial statements.

40

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Statements of Comprehensive Income

(Unaudited)

	For the Three Months Ended March 31,
(Dollars in millions)	2016			2015
Net Income Attributable to MUAH	$	49		$	137
Other Comprehensive Income (Loss), Net of Tax:
Net change in unrealized gains (losses) on cash flow hedges	135			52
Net change in unrealized gains (losses) on investment securities	91			73
Foreign currency translation adjustment	4			(7		)
Pension and other postretirement benefit adjustments	10			14
Other	(1		)	—
Total other comprehensive income (loss)	239			132
Comprehensive Income (Loss) Attributable to MUAH	288			269
Comprehensive loss from noncontrolling interests	(12		)	(5		)
Total Comprehensive Income (Loss)	$	276		$	264

See accompanying notes to consolidated financial statements.

41

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Balance Sheets

(Unaudited)

(Dollars in millions, except per share amount)	March 31, 2016			December 31, 2015
Assets
Cash and due from banks	$	1,599		$	1,756
Interest bearing deposits in banks	6,696			2,749
Federal funds sold and securities purchased under resale agreements	29			24
Total cash and cash equivalents	8,324			4,529
Trading account assets	1,370			1,087
Securities available for sale	13,011			14,344
Securities held to maturity (Fair value $10,848 at March 31, 2016 and $10,207 at December 31, 2015)	10,605			10,158
Loans held for investment	79,299			77,599
Allowance for loan losses	(879		)	(721		)
Loans held for investment, net	78,420			76,878
Premises and equipment, net	632			608
Goodwill	3,225			3,225
Other assets	5,322			5,387
Total assets	$	120,909		$	116,216
Liabilities
Deposits:
Noninterest bearing	$	38,556		$	32,463
Interest bearing	50,944			51,877
Total deposits	89,500			84,340
Commercial paper and other short-term borrowings	647			1,038
Long-term debt	11,843			12,349
Trading account liabilities	747			796
Other liabilities	2,203			2,017
Total liabilities	104,940			100,540
Commitments, contingencies and guarantees—See Note 12
Equity
MUAH stockholder's equity:
Preferred stock:
Authorized 5,000,000 shares; no shares issued or outstanding	—			—
Common stock, par value $1 per share:
Authorized 300,000,000 shares, 136,330,831 shares issued and outstanding as of March 31, 2016 and December 31, 2015	136			136
Additional paid-in capital	7,250			7,241
Retained earnings	8,885			8,836
Accumulated other comprehensive loss	(513		)	(752		)
Total MUAH stockholder's equity	15,758			15,461
Noncontrolling interests	211			215
Total equity	15,969			15,676
Total liabilities and equity	$	120,909		$	116,216

See accompanying notes to consolidated financial statements.

42

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Statements of Changes in Stockholder's Equity

(Unaudited)

	MUAH Stockholder's Equity
(Dollars in millions)	Common Stock		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)			Noncontrolling Interests			Total Equity
Balance December 31, 2014	$	136	$	7,232	$	8,265	$	(729	)	$	264		$	15,168
Net income (loss)	—		—		137		—			(5		)	132
Other comprehensive income (loss), net of tax	—		—		—		132			—			132
Compensation—restricted stock units	—		9		—		—			—			9
Other	—		—		—		—			(9		)	(9		)
Net change	—		9		137		132			(14		)	264
Balance March 31, 2015	$	136	$	7,241	$	8,402	$	(597	)	$	250		$	15,432
Balance December 31, 2015	$	136	$	7,241	$	8,836	$	(752	)	$	215		$	15,676
Net income (loss)	—		—		49		—			(12		)	37
Other comprehensive income (loss), net of tax	—		—		—		239			—			239
Compensation—restricted stock units	—		9		—		—			—			9
Other	—		—		—		—			8			8
Net change	—		9		49		239			(4		)	293
Balance March 31, 2016	$	136	$	7,250	$	8,885	$	(513	)	$	211		$	15,969

See accompanying notes to consolidated financial statements.

43

MUFG Americas Holdings Corporation and Subsidiaries

Consolidated Statements of Cash Flows

(Unaudited)

	For the Three Months Ended March 31,
(Dollars in millions)	2016			2015
Cash Flows from Operating Activities:
Net income including noncontrolling interests	$	37		$	132
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	162			3
Depreciation, amortization and accretion, net	80			111
Stock-based compensation—restricted stock units	15			9
Deferred income taxes	(25		)	113
Net gains on sales of securities	(13		)	(3		)
Net decrease (increase) in trading account assets	(283		)	(119		)
Net decrease (increase) in other assets	402			(80		)
Net increase (decrease) in trading account liabilities	(49		)	50
Net increase (decrease) in other liabilities	79			181
Loans originated for sale	(519		)	(362		)
Net proceeds from sale of loans originated for sale	514			291
Pension and other benefits adjustment	(149		)	(158		)
Other, net	7			—
Total adjustments	221			36
Net cash provided by (used in) operating activities	258			168
Cash Flows from Investing Activities:
Proceeds from sales of securities available for sale	1,658			324
Proceeds from paydowns and maturities of securities available for sale	365			441
Purchases of securities available for sale	(529		)	(485		)
Proceeds from paydowns and maturities of securities held to maturity	360			377
Purchases of securities held to maturity	(866		)	(1,146		)
Proceeds from sales of loans	34			36
Net decrease (increase) in loans	(1,620		)	(91		)
Purchases of other investments	(46		)	(77		)
Other, net	(79		)	(52		)
Net cash provided by (used in) investing activities	(723		)	(673		)
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	5,149			(3,263		)
Net increase (decrease) in commercial paper and other short-term borrowings	(391		)	771
Proceeds from issuance of long-term debt	—			2,697
Repayment of long-term debt	(500		)	(817		)
Other, net	(6		)	(11		)
Change in noncontrolling interests	8			(9		)
Net cash provided by (used in) financing activities	4,260			(632		)
Net change in cash and cash equivalents	3,795			(1,137		)
Cash and cash equivalents at beginning of period	4,529			5,751
Cash and cash equivalents at end of period	$	8,324		$	4,614
Cash Paid During the Period For:
Interest	$	106		$	76
Income taxes, net	50			21
Supplemental Schedule of Noncash Investing and Financing Activities:
Net transfer of loans held for investment to (from) loans held for sale	(81		)	80
Transfer of loans held for investment to OREO	—			3

See accompanying notes to consolidated financial statements.

44

Note 1—Summary of Significant Accounting Policies and Nature of Operations

MUFG Americas Holdings Corporation (MUAH) is a financial holding company and a bank holding company whose principal subsidiary is MUFG Union Bank, N.A. (MUB). MUAH provides a wide range of financial services to consumers, small businesses, middle-market companies and major corporations nationally and internationally. The unaudited Consolidated Financial Statements of MUFG Americas Holdings Corporation, its subsidiaries, and its consolidated variable interest entities (the Company) have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Rules and Regulations of the SEC. However, they do not include all of the disclosures necessary for annual financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included. The results of operations for the first quarter of 2016 are not necessarily indicative of the operating results anticipated for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2015 (2015 Form 10-K).

The preparation of financial statements in conformity with GAAP also requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Although such estimates contemplate current conditions and management’s expectations of how they may change in the future, it is reasonably possible that actual results could differ significantly from those estimates. This could materially affect the Company’s results of operations and financial condition in the near term. Significant estimates made by management in the preparation of the Company’s financial statements include, but are not limited to, the evaluation of other-than-temporary impairment on investment securities (Note 3), the allowance for credit losses (Note 4), goodwill impairment, fair value of financial instruments (Note 8), hedge accounting (Note 9), pension accounting (Note 11), income taxes, and transfer pricing.

Recently Issued Accounting Pronouncements

Revenue from Contracts with Customers

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance on the core principle that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU applies to all contracts with customers, except financial instruments, guarantees, lease contracts, insurance contracts and certain non-monetary exchanges. It provides the following five-step revenue recognition model: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. In addition, the ASU requires additional disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015 the FASB issued ASU 2015-14, Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 to interim and annual periods beginning on January 1, 2018, with early adoption permitted in 2017. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which amends the accounting, presentation, and disclosure requirements for certain financial instruments. The ASU requires that all equity investments be recorded at fair value through net income (other than those accounted for under equity method or result in consolidation of the investee); however, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The ASU also requires an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability under the fair value option. The ASU also clarifies that an entity must evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. In addition,

45

Note 1—Summary of Significant Accounting Policies and Nature of Operations (Continued)

the ASU amends the presentation and disclosure requirements for financial instruments and now requires the use of an exit price notion when measuring the fair value of financial instruments for disclosure purposes. This guidance is effective for interim and annual periods beginning on January 1, 2018, with early adoption permitted for the amendments to the accounting for financial liabilities under the fair value option. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Accounting for Leases

In February 2016, the FASB issued ASU 2016-02, Leases, which will require entities that lease assets (i.e., lessees) to recognize assets and liabilities on their balance sheet for the rights and obligations created by those leases (where lease terms are greater than twelve months).  The accounting by entities that own the assets leased (i.e., lessors) will remain largely unchanged; however, leveraged lease accounting will no longer be permitted for leases that commence after the effective date. The ASU will also require qualitative and quantitative disclosures about the amount, timing and uncertainty of cash flows arising from leases.  The guidance is effective for interim and annual periods beginning on January 1, 2019 and requires a modified retrospective approach, with early adoption permitted. Management is currently assessing the impact of the guidance on the Company’s financial position and results of operations.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships

In March 2016, the FASB issued ASU 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships, which clarifies that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument does not, in and of itself, require dedesignation of that hedging relationship. However, entities will still need to evaluate whether all other hedge accounting criteria continue to be met. This ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Entities have the option to adopt the new guidance on a prospective basis to new derivative contract novations or on a modified retrospective basis. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Contingent Put and Call Options in Debt Instruments

In March 2016, the FASB issued ASU 2016-06, Contingent Put and Call Options in Debt Instruments, which clarifies the requirements for assessing whether contingent put or call options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. Current guidance indicates that a contingently exercisable put or call option is clearly and closely related to the debt host if it is indexed only to interest rates or credit risk, but was unclear whether the nature of the exercise contingency itself should be considered in this evaluation. The ASU clarifies that an entity would not separately assess whether the contingency itself is indexed only to interest rates or the credit risk of the entity to conclude the option is clearly and closely related. This guidance is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. The new guidance is required to be applied on a modified retrospective basis to all existing and future debt instruments and an entity will be able to elect the fair value option at transition for the entire debt instrument. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Simplifying the Transition to the Equity Method of Accounting

In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting, which eliminates the requirement to apply the equity method of accounting retrospectively when an investor obtains significant influence over an existing investee.   The ASU requires that (1) the equity method be applied prospectively from the date significant influence is obtained, and (2) investors add the cost of acquiring the additional interest in the investee to the current basis of their previously held interest.  The ASU also provides specific guidance for available-for-sale securities that become eligible for the equity method whereby any unrealized gain or loss recorded within accumulated other comprehensive income must be recognized in earnings on the date the investment initially qualifies for the equity method.   The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted.  Adoption of this guidance will not significantly impact the Company’s financial position or results of operations.

46

Note 1—Summary of Significant Accounting Policies and Nature of Operations (Continued)

Principal versus Agent Considerations (Reporting Revenue Gross versus Net)

In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The ASU amends ASU 2014-09, Revenue from Contracts with Customers, with respect to assessing whether an entity is a principal (and thus presents revenue gross) or an agent (and thus presents revenue net). The amendments retain the guidance that the principal in an arrangement controls a good or service before it is transferred to a customer and clarify: (1) that an entity must first identify the specified good or service being provided to the customer; (2) that the unit of account for the principal versus agent assessment is each specified good or service promised in a contract; (3) indicators and examples to help an entity evaluate whether it is the principal; and (4) how to assess whether an entity controls services performed by another party. The ASU is effective upon the adoption of ASU 2014-09, which is effective for periods beginning January 1, 2018, with early adoption permitted in 2017. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Accounting for Share-Based Payments

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The ASU requires recognition of any difference between the deduction for tax purposes and compensation cost recognized for financial reporting purposes as income tax expense or benefit in the income statement (as opposed to recognizing certain excess tax benefits in additional paid-in capital).  The tax effects of exercised or vested awards are now also required to be treated as discrete items in the reporting period in which they occur (rather than through the annual estimated effective tax rate) and excess tax benefits must be recognized regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits are now classified along with other income tax cash flows as an operating activity, as opposed to a financing activity.  With respect to accounting for forfeitures, an entity can now make an accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur.  Additionally, entities may now partially settle awards in cash up to the maximum statutory tax rates in the applicable jurisdictions, without precluding equity classification of the award (current GAAP allows only up to the minimum statutory withholding requirements). The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

47

Note 2—Correction of Prior Period Amounts

During the first quarter of 2016, the Company corrected a prior period error related to the recognition of income associated with two LIHC investment fund structures. This error affected historical periods beginning in 2010 through December 31, 2015. The Company recognized certain noninterest income amounts related to transactions with the two LIHC investment fund structures. These amounts should not have been recorded in earnings until the investments were liquidated or deconsolidated. This error was not material to any of the Company's previously issued financial statements. In accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements (SAB 108), the consolidated balance sheets as of December 31, 2015 and December 31, 2014 and the consolidated statements of changes in stockholder's equity for the three months ended March 31, 2016 and 2015 have been adjusted to reflect the correction of this error.

The following tables show the affected line items within the consolidated financial statements:

	December 31, 2015
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	5,377	$	10		$	5,387
Other liabilities	2,023		(6		)	2,017
Retained earnings	8,854		(18		)	8,836
Noncontrolling interests	181		34			215

	December 31, 2014
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	4,630	$	10		$	4,640
Other liabilities	1,897		(6		)	1,891
Retained earnings	8,283		(18		)	8,265
Noncontrolling interests	230		34			264

48

Note 3—Securities

Securities Available for Sale

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains, gross unrealized losses and fair values of securities are presented below.

	March 31, 2016
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	148	$	4	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	6,302		16		10		6,308
Privately issued	202		2		1		203
Privately issued - commercial mortgage-backed securities	1,469		24		1		1,492
Collateralized loan obligations	3,267		—		40		3,227
Other	7		—		—		7
Asset Liability Management securities	11,395		46		52		11,389
Other debt securities:
Direct bank purchase bonds	1,560		45		24		1,581
Other	32		1		—		33
Equity securities	6		2		—		8
Total securities available for sale	$	12,993	$	94	$	76	$	13,011

	December 31, 2015
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	596	$	1	$	3	$	594
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	7,298		1		98		7,201
Privately issued	150		2		1		151
Privately issued - commercial mortgage-backed securities	1,566		5		25		1,546
Collateralized loan obligations	3,266		1		34		3,233
Other	7		—		—		7
Asset Liability Management securities	12,883		10		161		12,732
Other debt securities:
Direct bank purchase bonds	1,549		45		22		1,572
Other	32		—		—		32
Equity securities	6		2		—		8
Total securities available for sale	$	14,470	$	57	$	183	$	14,344

49

Note 3—Securities (Continued)

The Company’s securities available for sale with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, identified for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	$	649	$	3	$	2,006	$	7	$	2,655	$	10
Privately issued	15		—		35		1		50		1
Privately issued - commercial mortgage-backed securities	119		—		82		1		201		1
Collateralized loan obligations	1,765		14		1,340		26		3,105		40
Other	—		—		1		—		1		—
Asset Liability Management securities	2,548		17		3,464		35		6,012		52
Other debt securities:
Direct bank purchase bonds	236		8		655		16		891		24
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	2,784	$	25	$	4,124	$	51	$	6,908	$	76

	December 31, 2015
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
U.S. Treasury	$	295	$	3	$	—	$	—	$	295	$	3
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	4,692		57		2,278		41		6,970		98
Privately issued	39		—		38		1		77		1
Privately issued - commercial mortgage-backed securities	1,154		24		65		1		1,219		25
Collateralized loan obligations	1,497		11		1,290		23		2,787		34
Asset Liability Management securities	7,677		95		3,671		66		11,348		161
Other debt securities:
Direct bank purchase bonds	157		4		686		18		843		22
Other	2		—		—		—		2		—
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	7,836	$	99	$	4,362	$	84	$	12,198	$	183

At March 31, 2016, the Company did not have the intent to sell any securities in an unrealized loss position before a recovery of the amortized cost, which may be at maturity. The Company also believes that it is more likely than not that it will not be required to sell the securities prior to recovery of amortized cost.

Agency residential mortgage-backed securities consist of securities guaranteed by a U.S. government agency or a government-sponsored agency such as Fannie Mae, Freddie Mac or Ginnie Mae. These securities are collateralized by residential mortgage loans and may be prepaid at par prior to maturity. The unrealized losses on agency residential mortgage-backed securities resulted from changes in interest rates and not from changes in credit quality. At March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities because the Company determined that the strength of the issuers’ guarantees through direct obligations or support from the U.S. government is sufficient to protect the Company from losses.

Commercial mortgage-backed securities are collateralized by commercial mortgage loans and are generally subject to prepayment penalties. The unrealized losses on commercial mortgage-backed securities

50

Note 3—Securities (Continued)

resulted from higher market yields since purchase. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

The Company’s CLOs consist of Cash Flow CLOs. A Cash Flow CLO is a structured finance product that securitizes a diversified pool of loan assets into multiple classes of notes. Cash Flow CLOs pay the note holders through the receipt of interest and principal repayments from the underlying loans unlike other types of CLOs that pay note holders through the trading and sale of underlying collateral. Unrealized losses typically arise from widening credit spreads and deteriorating credit quality of the underlying collateral. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

Other debt securities primarily consist of direct bank purchase bonds, which are not rated by external credit rating agencies. The unrealized losses on these bonds resulted from a higher return on capital expected by the secondary market compared with the return on capital required at the time of origination when the bonds were purchased. The Company estimates the unrealized loss for each security by assessing the underlying collateral of each security. The Company estimates the portion of loss attributable to credit based on the expected cash flows of the underlying collateral using estimates of current key assumptions, such as probability of default and loss severity. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost and potential impairment is identified. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

The fair value of debt securities available for sale by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
(Dollars in millions)	One Year or Less		Over One Year Through Five Years		Over Five Years Through Ten Years		Over Ten Years		Total Fair Value
Asset Liability Management securities:
U.S. Treasury	$	—	$	—	$	152	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	—		17		372		5,919		6,308
Privately issued	—		3		—		200		203
Privately issued - commercial mortgage-backed securities	—		—		37		1,455		1,492
Collateralized loan obligations	—		16		1,858		1,353		3,227
Other	—		2		5		—		7
Asset Liability Management securities	—		38		2,424		8,927		11,389
Other debt securities:
Direct bank purchase bonds	67		346		698		470		1,581
Other	—		1		—		32		33
Total debt securities available for sale	$	67	$	385	$	3,122	$	9,429	$	13,003

The gross realized gains and losses from sales of available for sale securities for the three months endedMarch 31, 2016 and 2015 are shown below. The specific identification method is used to calculate realized gains and losses on sales.

	For the Three Months Ended March 31,
(Dollars in millions)	2016		2015
Gross realized gains	$	13	$	5
Gross realized losses	—		—

51

Note 3—Securities (Continued)

Securities Held to Maturity

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains and losses recognized in OCI, carrying amount, gross unrealized gains and losses not recognized in OCI, and fair values of securities held to maturity are presented below. Management has asserted the positive intent and ability to hold these securities to maturity.

	March 31, 2016
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	490	$	—	$	—	$	490	$	12	$	—	$	502
U.S. government-sponsored agencies	200		—		—		200		—		—		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	8,301		4		51		8,254		154		5		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,731		—		70		1,661		82		—		1,743
Total securities held to maturity	$	10,722	$	4	$	121	$	10,605	$	248	$	5	$	10,848

	December 31, 2015
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	489	$	—	$	—	$	489	$	4	$	—	$	493
U.S. government-sponsored agencies	220		—		—		220		—		4		216
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	7,831		4		53		7,782		49		41		7,790
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,740		—		73		1,667		46		5		1,708
Total securities held to maturity	$	10,280	$	4	$	126	$	10,158	$	99	$	50	$	10,207

Amortized cost is defined as the original purchase cost, adjusted for any accretion or amortization of a purchase discount or premium, less principal payments and any impairment previously recognized in earnings. The carrying amount is the difference between the amortized cost and the amount recognized in OCI. The amount recognized in OCI primarily reflects the unrealized gain or loss at date of transfer from available for sale to the held to maturity classification, net of amortization, which is recorded in interest income on securities.

52

Note 3—Securities (Continued)

The Company’s securities held to maturity with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, separately for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	$	451	$	—	$	4	$	1,832	$	51	$	1	$	2,283	$	51	$	5
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	92		—		—		1,463		70		—		1,555		70		—
Total securities held to maturity	$	543	$	—	$	4	$	3,295	$	121	$	1	$	3,838	$	121	$	5

	December 31, 2015
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government-sponsored agencies	$	196	$	—	$	4	$	—	$	—	$	—	$	196	$	—	$	4
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	3,297		—		39		1,705		53		2		5,002		53		41
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	197		—		1		1,428		73		4		1,625		73		5
Total securities held to maturity	$	3,690	$	—	$	44	$	3,133	$	126	$	6	$	6,823	$	126	$	50

53

Note 3—Securities (Continued)

The carrying amount and fair value of securities held to maturity by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
	Over One Year Through Five Years				Over Five Years Through Ten Years				Over Ten Years				Total
(Dollars in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
U.S. Treasury	$	490	$	502	$	—	$	—	$	—	$	—	$	490	$	502
U.S. government-sponsored agencies	—		—		200		200		—		—		200		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	—		—		92		94		8,162		8,309		8,254		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	49		51		801		863		811		829		1,661		1,743
Total securities held to maturity	$	539	$	553	$	1,093	$	1,157	$	8,973	$	9,138	$	10,605	$	10,848

Securities Pledged as Collateral

At March 31, 2016, the Company had $0.9 billion of securities available for sale pledged as collateral to secure public and trust department deposits, where the secured party cannot resell or repledge such securities. At March 31, 2016 and December 31, 2015, the Company accepted securities as collateral for reverse repurchase agreements that it is permitted by contract to sell or repledge of $28 million and $24 million, respectively, none of which has been sold or repledged. These securities received as collateral are not recognized on the Company's balance sheet. For further information related to the Company's significant accounting policies on securities pledged as collateral, see Note 1 to the Consolidated Financial Statements in Part II, Item 8. "Financial Statements and Supplementary Data" in our 2015 Form 10-K.

54

Note 4—Loans and Allowance for Loan Losses

The following table provides the outstanding balances of loans at March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016			December 31, 2015
Loans held for investment:
Commercial and industrial	$	30,212		$	29,730
Commercial mortgage	14,920			13,904
Construction	2,251			2,297
Lease financing	732			737
Total commercial portfolio	48,115			46,668
Residential mortgage	27,495			27,344
Home equity and other consumer loans	3,385			3,251
Total consumer portfolio	30,880			30,595
Total loans held for investment, before purchased credit-impaired loans	78,995			77,263
Purchased credit-impaired loans(1)	304			336
Total loans held for investment(2)	79,299			77,599
Allowance for loan losses	(879		)	(721		)
Loans held for investment, net	$	78,420		$	76,878

(1) Includes $16 million and $19 million as of March 31, 2016 and December 31, 2015, respectively, of loans for which the Company will be reimbursed a portion of any future losses under the terms of the FDIC loss share agreements.

(2) Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

Allowance for Loan Losses

The following tables provide a reconciliation of changes in the allowance for loan losses by portfolio segment:

	For the Three Months Ended March 31, 2016
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired			Unallocated			Total
Allowance for loan losses, beginning of period	$	651		$	49		$	1		$	20		$	721
(Reversal of) provision for loan losses	171			8			(1		)	(20		)	158
Other	4			—			—			—			4
Loans charged-off	(8		)	(1		)	—			—			(9		)
Recoveries of loans previously charged-off	4			1			—			—			5
Allowance for loan losses, end of period	$	822		$	57		$	—		$	—		$	879

	For the Three Months Ended March 31, 2015
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses, beginning of period	$	465		$	49		$	3	$	20	$	537
(Reversal of) provision for loan losses	(5		)	2			—		—		(3		)
Other	(1		)	—			—		—		(1		)
Loans charged-off	(4		)	(3		)	—		—		(7		)
Recoveries of loans previously charged-off	4			—			—		—		4
Allowance for loan losses, end of period	$	459		$	48		$	3	$	20	$	530

55

Note 4—Loans and Allowance for Loan Losses (Continued)

The following tables show the allowance for loan losses and related loan balances by portfolio segment as of March 31, 2016 and December 31, 2015:

	March 31, 2016
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	265	$	13	$	—	$	—	$	278
Collectively evaluated for impairment	557		44		—		—		601
Total allowance for loan losses	$	822	$	57	$	—	$	—	$	879
Loans held for investment:
Individually evaluated for impairment	$	752	$	301	$	1	$	—	$	1,054
Collectively evaluated for impairment	47,363		30,579		—		—		77,942
Purchased credit-impaired loans	—		—		303		—		303
Total loans held for investment	$	48,115	$	30,880	$	304	$	—	$	79,299

	December 31, 2015
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	101	$	13	$	—	$	—	$	114
Collectively evaluated for impairment	550		36		—		20		606
Purchased credit-impaired loans	—		—		1		—		1
Total allowance for loan losses	$	651	$	49	$	1	$	20	$	721
Loans held for investment:
Individually evaluated for impairment	$	525	$	307	$	1	$	—	$	833
Collectively evaluated for impairment	46,143		30,288		—		—		76,431
Purchased credit-impaired loans	—		—		335		—		335
Total loans held for investment	$	46,668	$	30,595	$	336	$	—	$	77,599

Nonaccrual and Past Due Loans

The following table presents nonaccrual loans as of March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	702	$	284
Commercial mortgage	30		37
Total commercial portfolio	732		321
Residential mortgage	186		190
Home equity and other consumer loans	32		35
Total consumer portfolio	218		225
Total nonaccrual loans, before purchased credit-impaired loans	950		546
Purchased credit-impaired loans	6		6
Total nonaccrual loans	$	956	$	552
Troubled debt restructured loans that continue to accrue interest	$	229	$	413
Troubled debt restructured nonaccrual loans (included in the total nonaccrual loans above)	$	598	$	409

56

Note 4—Loans and Allowance for Loan Losses (Continued)

The following tables show an aging of the balance of loans held for investment, excluding purchased credit-impaired loans, by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,869	$	64	$	11	$	75	$	30,944
Commercial mortgage	14,886		26		8		34		14,920
Construction	2,251		—		—		—		2,251
Total commercial portfolio	48,006		90		19		109		48,115
Residential mortgage	27,357		90		48		138		27,495
Home equity and other consumer loans	3,363		13		9		22		3,385
Total consumer portfolio	30,720		103		57		160		30,880
Total loans held for investment, excluding purchased credit-impaired loans	$	78,726	$	193	$	76	$	269	$	78,995

	December 31, 2015
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,446	$	15	$	6	$	21	$	30,467
Commercial mortgage	13,880		17		7		24		13,904
Construction	2,292		5		—		5		2,297
Total commercial portfolio	46,618		37		13		50		46,668
Residential mortgage	27,206		92		46		138		27,344
Home equity and other consumer loans	3,225		14		12		26		3,251
Total consumer portfolio	30,431		106		58		164		30,595
Total loans held for investment, excluding purchased credit-impaired loans	$	77,049	$	143	$	71	$	214	$	77,263

Loans 90 days or more past due and still accruing totaled $6 million and $2 million at March 31, 2016 and December 31, 2015, respectively. Purchased credit-impaired loans that were 90 days or more past due and still accruing totaled $28 million and $16 million at March 31, 2016 and December 31, 2015, respectively.

Credit Quality Indicators

Management analyzes the Company’s loan portfolios by applying specific monitoring policies and procedures that vary according to the relative risk profile and other characteristics within the various loan portfolios. For further information related to the credit quality indicators the Company uses to monitor the portfolio, see Note 3 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

57

Note 4—Loans and Allowance for Loan Losses (Continued)

The following tables summarize the loans in the commercial portfolio segment and commercial loans outstanding within the purchased credit-impaired loans segment monitored for credit quality based on internal ratings. The amounts presented reflect unpaid principal balances less charge-offs.

	March 31, 2016
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,143	$	852	$	1,843	$	30,838
Commercial mortgage	14,472		141		171		14,784
Construction	2,193		59		—		2,252
Total commercial portfolio	44,808		1,052		2,014		47,874
Purchased credit-impaired loans	33		8		57		98
Total	$	44,841	$	1,060	$	2,071	$	47,972

	December 31, 2015
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,228	$	844	$	1,265	$	30,337
Commercial mortgage	13,470		139		149		13,758
Construction	2,240		57		—		2,297
Total commercial portfolio	43,938		1,040		1,414		46,392
Purchased credit-impaired loans	40		12		61		113
Total	$	43,978	$	1,052	$	1,475	$	46,505

At March 31, 2016 and December 31, 2015, the commercial portfolio included $1.7 billion and $1.2 billion, respectively, in criticized loans within the oil and gas industry sector of the portfolio. Criticized loans include both special mention and classified loans.

58

Note 4—Loans and Allowance for Loan Losses (Continued)

The Company monitors the credit quality of its consumer portfolio segment and consumer loans within the purchased credit-impaired loans segment based primarily on payment status. The following tables summarize the loans in the consumer portfolio segment and purchased credit-impaired loans segment, which excludes $15 million and $18 million of loans covered by FDIC loss share agreements, at March 31, 2016 and December 31, 2015, respectively:

	March 31, 2016
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,309	$	186	$	27,495
Home equity and other consumer loans	3,353		32		3,385
Total consumer portfolio	30,662		218		30,880
Purchased credit-impaired loans	139		—		139
Total	$	30,801	$	218	$	31,019

	December 31, 2015
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,154	$	190	$	27,344
Home equity and other consumer loans	3,216		35		3,251
Total consumer portfolio	30,370		225		30,595
Purchased credit-impaired loans	148		—		148
Total	$	30,518	$	225	$	30,743

The Company also monitors the credit quality for substantially all of its consumer portfolio segment using credit scores provided by FICO and refreshed LTV ratios. FICO credit scores are refreshed at least quarterly to monitor the quality of the portfolio. Refreshed LTV measures the principal balance of the loan as a percentage of the estimated current value of the property securing the loan. Home equity loans are evaluated using combined LTV, which measures the principal balance of the combined loans that have liens against the property (including unused credit lines for home equity products) as a percentage of the estimated current value of the property securing the loans. The LTV ratios are refreshed on a quarterly basis, using the most recent home pricing index data available for the property location. 

The following tables summarize the loans in the consumer portfolio segment and consumer loans within the purchased credit-impaired loans segment monitored for credit quality based on refreshed FICO scores and refreshed LTV ratios at March 31, 2016 and December 31, 2015. These tables exclude loans covered by FDIC loss share agreements, as discussed above. The amounts presented reflect unpaid principal balances less partial charge-offs.

	March 31, 2016
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,311		$	5,482		$	467		$	27,260
Home equity and other consumer loans	2,345			896			83			3,324
Total consumer portfolio	23,656			6,378			550			30,584
Purchased credit-impaired loans	57			71			11			139
Total	$	23,713		$	6,449		$	561		$	30,723
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

59

Note 4—Loans and Allowance for Loan Losses (Continued)

	December 31, 2015
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,209		$	5,412		$	488		$	27,109
Home equity and other consumer loans	2,276			818			85			3,179
Total consumer portfolio	23,485			6,230			573			30,288
Purchased credit-impaired loans	60			76			12			148
Total	$	23,545		$	6,306		$	585		$	30,436
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

	March 31, 2016
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,396		$	764		$	48		$	52		$	27,260
Home equity loans	2,117			210			79			100			2,506
Total consumer portfolio	28,513			974			127			152			29,766
Purchased credit-impaired loans	101			27			9			1			138
Total	$	28,614		$	1,001		$	136		$	153		$	29,904
Percentage of total	96		%	3		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

	December 31, 2015
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,143		$	804		$	52		$	110		$	27,109
Home equity loans	2,190			217			83			55			2,545
Total consumer portfolio	28,333			1,021			135			165			29,654
Purchased credit-impaired loans	106			32			9			—			147
Total	$	28,439		$	1,053		$	144		$	165		$	29,801
Percentage of total	95		%	4		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

60

Note 4—Loans and Allowance for Loan Losses (Continued)

Troubled Debt Restructurings

The following table provides a summary of the Company’s recorded investment in TDRs as of March 31, 2016 and December 31, 2015. The summary includes those TDRs that are on nonaccrual status and those that continue to accrue interest. The Company had $29 million and $98 million in commitments to lend additional funds to borrowers with loan modifications classified as TDRs as of March 31, 2016 and December 31, 2015, respectively.

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	509	$	499
Commercial mortgage	17		16
Total commercial portfolio	526		515
Residential mortgage	270		276
Home equity and other consumer loans	31		31
Total consumer portfolio	301		307
Total restructured loans, excluding purchased credit-impaired loans	$	827	$	822

For the first quarter of 2016, TDR modifications in the commercial portfolio segment were primarily composed of interest rate changes, maturity extensions, covenant waivers, conversions from revolving lines of credit to term loans, or some combination thereof. In the consumer portfolio segment, primarily all of the modifications were composed of interest rate reductions and maturity extensions. Charge-offs related to TDR modifications for the three months ended March 31, 2016 and March 31, 2015 were de minimis. For the commercial and consumer portfolio segments, the allowance for loan losses for TDRs is measured on an individual loan basis or in pools with similar risk characteristics.

The following table provides the pre- and post-modification outstanding recorded investment amounts of TDRs as of the date of the restructuring that occurred during the three months ended March 31, 2016 and 2015:

	For the Three Months Ended March 31, 2016				For the Three Months Ended March 31, 2015
(Dollars in millions)	Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)		Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)
Commercial and industrial	$	50	$	50	$	72	$	72
Commercial mortgage	5		5		2		2
Total commercial portfolio	55		55		74		74
Residential mortgage	4		4		4		4
Home equity and other consumer loans	1		1		1		1
Total consumer portfolio	5		5		5		5
Total	$	60	$	60	$	79	$	79

(1) Represents the recorded investment in the loan immediately prior to the restructuring event.

(2) Represents the recorded investment in the loan immediately following the restructuring event. It includes the effect of paydowns that were required as part of the restructuring terms.

61

Note 4—Loans and Allowance for Loan Losses (Continued)

The following table provides the recorded investment amounts of TDRs at the date of default, for which there was a payment default during the three months ended March 31, 2016 and 2015, and where the default occurred within the first twelve months after modification into a TDR. A payment default is defined as the loan being 60 days or more past due.

(Dollars in millions)	For the Three Months Ended March 31, 2016		For the Three Months Ended March 31, 2015
Commercial and industrial	$	1	$	4
Commercial mortgage	—		1
Total commercial portfolio	1		5
Residential mortgage	2		—
Total consumer portfolio	2		—
Total	$	3	$	5

For loans in the consumer portfolio in which impairment is measured using the present value of expected future cash flows discounted at the loan’s effective interest rate, historical payment defaults and the propensity to redefault are some of the factors considered when determining the allowance for loan losses.

Loan Impairment

Loans that are individually evaluated for impairment include larger nonaccruing loans within the commercial and industrial, construction, and commercial mortgage loan portfolios and loans modified in a TDR. The Company records an impairment allowance when the value of an impaired loan is less than the recorded investment in the loan.

The following tables show information about impaired loans by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	704	$	32	$	736	$	264	$	732	$	34
Commercial mortgage	14		2		16		1		14		2
Total commercial portfolio	718		34		752		265		746		36
Residential mortgage	179		91		270		12		194		107
Home equity and other consumer loans	9		22		31		1		10		33
Total consumer portfolio	188		113		301		13		204		140
Total, excluding purchased credit-impaired loans	906		147		1,053		278		950		176
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	907	$	147	$	1,054	$	278	$	951	$	176

62

Note 4—Loans and Allowance for Loan Losses (Continued)

	December 31, 2015
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	363	$	142	$	505	$	100	$	377	$	144
Commercial mortgage	14		6		20		1		15		9
Total commercial portfolio	377		148		525		101		392		153
Residential mortgage	183		93		276		13		199		109
Home equity and other consumer loans	9		22		31		—		10		35
Total consumer portfolio	192		115		307		13		209		144
Total, excluding purchased credit-impaired loans	569		263		832		114		601		297
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	570	$	263	$	833	$	114	$	602	$	297

The following table presents the average recorded investment in impaired loans and the amount of interest income recognized for impaired loans during the three months ended March 31, 2016 and 2015 for the commercial, consumer and purchased credit-impaired loans portfolio segments.

	For the Three Months Ended March 31,
	2016				2015
(Dollars in millions)	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
Commercial and industrial	$	623	$	2	$	149	$	2
Commercial mortgage	18		—		35		—
Construction	—		—		—		—
Total commercial portfolio	641		2		184		2
Residential mortgage	273		2		306		3
Home equity and other consumer loans	31		1		30		1
Total consumer portfolio	304		3		336		4
Total, excluding purchased credit-impaired loans	945		5		520		6
Purchased credit-impaired loans	1		—		1		—
Total	$	946	$	5	$	521	$	6

The Company transferred a net $81 million of commercial loans from loans held for sale to held for investment during the three months endedMarch 31, 2016 and a net $80 million of commercial loans from held for investment to held for sale during the three months endedMarch 31, 2015. Proceeds from the sale of commercial loans were $34 million and $36 million during the three months endedMarch 31, 2016 and March 31, 2015, respectively. No consumer loans were sold or transferred from held for investment to held for sale during the three months endedMarch 31, 2016 or March 31, 2015.

Note 5—Variable Interest Entities

In the normal course of business, the Company has certain financial interests in entities which have been determined to be VIEs. Generally, a VIE is a corporation, partnership, trust or other legal structure where the equity investors do not have substantive voting rights, an obligation to absorb the entity’s losses or the right to receive the entity’s returns, or the ability to direct the significant activities of the entity. The following discusses the Company’s consolidated and unconsolidated VIEs.

63

Note 5—Variable Interest Entities (Continued)

Consolidated VIEs

The following tables present the assets and liabilities of consolidated VIEs recorded on the Company’s consolidated balance sheets at March 31, 2016 and December 31, 2015:

	March 31, 2016
	Consolidated Assets								Consolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Loans Held for Investment, net		Other Assets		Total Assets		Other Liabilities		Total Liabilities
LIHC investments	$	8	$	—	$	170	$	178	$	—	$	—
Leasing investments	4		585		158		747		67		67
Total consolidated VIEs	$	12	$	585	$	328	$	925	$	67	$	67

	December 31, 2015
	Consolidated Assets								Consolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Loans Held for Investment, net		Other Assets		Total Assets			Other Liabilities		Total Liabilities
LIHC investments	$	9	$	—	$	178	$	187		$	—	$	—
Leasing investments	21		588		156		765			59		59
Total consolidated VIEs	$	30	$	588	$	334	$	952		$	59	$	59

LIHC Investments

The Company sponsors, manages and syndicates two LIHC investment fund structures. These investments are designed to generate a return primarily through the realization of U.S. federal tax credits and deductions. The Company is considered the primary beneficiary and has consolidated these investments because the Company has the power to direct activities that most significantly impact the funds’ economic performances and also has the obligation to absorb losses of the funds that could potentially be significant to the funds. Neither creditors nor equity investors in the LIHC investments have any recourse to the general credit of the Company, and the Company’s creditors do not have any recourse to the assets of the consolidated LIHC investments.

Leasing Investments

The Company has leasing investments primarily in the wind, rail and coal industries. The Company is considered the primary beneficiary and has consolidated these investments because the Company has the power to direct the activities of these entities that significantly impact the entities’ economic performances. The Company also has the right to receive potentially significant benefits or the obligation to absorb potentially significant losses of these investments.

64

Note 5—Variable Interest Entities (Continued)

Unconsolidated VIEs

The following tables present the Company’s carrying amounts related to the unconsolidated VIEs at March 31, 2016 and December 31, 2015. The tables also present the Company’s maximum exposure to loss resulting from its involvement with these VIEs. The maximum exposure to loss represents the carrying amount of the Company’s involvement plus any legally binding unfunded commitments in the unlikely event that all of the assets in the VIEs become worthless. During the three months endedMarch 31, 2016 and March 31, 2015, the Company had noncash increases in unfunded commitments on LIHC investments of $37 million and $32 million, respectively, included within other liabilities.

	March 31, 2016
	Unconsolidated Assets										Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	190	$	1,169	$	1,384	$	420	$	420	$	1,384
Leasing investments	5		—		20		1,194		1,219		61		61		1,240
Other investments	—		—		34		27		61		—		—		86
Total unconsolidated VIEs	$	5	$	25	$	244	$	2,390	$	2,664	$	481	$	481	$	2,710

			December 31, 2015
			Unconsolidated Assets								Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	220	$	1,166	$	1,411	$	424	$	424	$	1,411
Leasing investments	5		—		20		1,200		1,225		61		61		1,245
Other investments	—		—		49		10		59		—		—		60
Total unconsolidated VIEs	$	5	$	25	$	289	$	2,376	$	2,695	$	485	$	485	$	2,716

LIHC Investments

The Company makes investments in partnerships and funds formed by third parties. The primary purpose of the partnerships and funds is to invest in low-income housing units and distribute tax credits and tax benefits associated with the underlying properties to investors. The Company is a limited partner investor and is allocated tax credits and deductions, but has no voting or other rights to direct the activities of the funds or partnerships, and therefore is not considered the primary beneficiary and does not consolidate these investments.

The following table presents the impact of the unconsolidated LIHC investments on our consolidated statements of income for the three months endedMarch 31, 2016 and 2015:

	For the Three Months Ended
	March 31, 2016		March 31, 2015
(Dollars in millions)
Losses from LIHC investments included in other noninterest expense	$	2	$	2
Amortization of LIHC investments included in income tax expense	30		27
Tax credits and other tax benefits from LIHC investments included in income tax expense	45		46

65

Note 5—Variable Interest Entities (Continued)

Leasing Investments

The unconsolidated VIEs related to leasing investments are primarily renewable energy investments. Through its subsidiaries, the Company makes equity investments in LLCs established by third party sponsors. The LLCs are created to operate and manage wind, solar, hydroelectric and cogeneration power plant projects. Power generated by the projects is sold to third parties through long-term purchase power agreements. As a limited investor member, the Company is allocated production tax credits and taxable income or losses associated with the projects. The Company has no voting or other rights to direct the activities of the LLCs, and therefore is not considered the primary beneficiary and does not consolidate these investments.

Other Investments

The Company has other investments in structures formed by third parties. The Company has no voting or other rights to direct the activities of the investments that would most significantly impact the entities’ performance, and therefore is not considered the primary beneficiary and does not consolidate these investments.

Note 6—Commercial Paper and Other Short-Term Borrowings

The following table is a summary of the Company's commercial paper and other short-term borrowings:

(Dollars in millions)	March 31, 2016		December 31, 2015
Federal funds purchased and securities sold under repurchase agreements, with weighted average interest rates of 0.34% and 0.30% at March 31, 2016 and December 31, 2015, respectively	$	14	$	44
Commercial paper, with a weighted average interest rate of 0.35% and 0.23% at March 31, 2016 and December 31, 2015, respectively	633		994
Total commercial paper and other short-term borrowings	$	647	$	1,038

66

Note 7—Long-Term Debt

Long-term debt consists of borrowings having an original maturity of one year or more. The following is a summary of the Company's long-term debt:

(Dollars in millions)	March 31, 2016		December 31, 2015
Debt issued by MUAH
Senior debt:
Floating rate senior notes due February 2018. These notes, which bear interest at 0.57% above 3-month LIBOR, had a rate of 1.19% at March 31, 2016 and 0.91% at December 31, 2015	$	249	$	250
Fixed rate 1.625% notes due February 2018	449		450
Fixed rate 2.25% notes due February 2020	996		1,000
Fixed rate 3.50% notes due June 2022	397		398
Fixed rate 3.00% notes due February 2025	495		498
Subordinated debt due to BTMU:
Floating rate subordinated debt due December 2023. This note, which bears interest at 1.38% above 3-month LIBOR, had a rate of 2.01% at March 31, 2016 and 1.98% at December 31, 2015	300		300
Junior subordinated debt payable to trusts(1):
Floating rate note due September 2036. This note had an interest rate of 2.33% at March 31, 2016 and 2.21% at December 31, 2015	36		36
Total debt issued by MUAH	2,922		2,932
Debt issued by MUB and other subsidiaries
Senior debt:
Fixed rate FHLB of San Francisco advances due February 2016. These notes bear a combined weighted-average rate of 2.50% at December 31, 2015	—		500
Fixed rate 3.00% notes due June 2016	700		700
Fixed rate 1.50% notes due September 2016	500		499
Floating rate notes due September 2016. These notes, which bear interest at 0.75% above 3-month LIBOR, had a rate of 1.38% at March 31, 2016 and 1.35% at December 31, 2015	500		500
Floating rate notes due May 2017. These notes, which bear interest at 0.40% above 3-month LIBOR, had a rate of 1.02% at March 31, 2016 and 0.73% at December 31, 2015	250		250
Fixed rate 2.125% notes due June 2017	499		499
Fixed rate 2.625% notes due September 2018	998		1,000
Fixed rate 2.250% notes due May 2019	509		502
Senior debt due to BTMU:
Floating rate debt due January 2018. This note, which bears interest at 0.85% above 1-month LIBOR, had a rate of 1.29% at March 31, 2016 and 1.09% at December 31, 2015	1,000		1,000
Floating rate debt due January 2018. This note, which bears interest at 0.87% above 1-month LIBOR, had a rate of 1.31% at March 31, 2016 and 1.11% at December 31, 2015	1,500		1,500
Floating rate debt due January 2018. This note, which bears interest at 1.03% above 1-month LIBOR, had a rate of 1.47% at March 31, 2016 and 1.27% at December 31, 2015	1,000		1,000
Subordinated debt:
Fixed rate 5.95% notes due May 2016	701		703
Subordinated debt due to BTMU:
Floating rate subordinated debt due June 2023. This note, which bears interest at 1.20% above 3-month LIBOR, had a rate of 1.83% at March 31, 2016 and 1.80% at December 31, 2015	750		750
Capital lease obligations with a combined weighted-average interest rate of 4.92% at March 31, 2016 and December 31, 2015(1)	14		14
Total debt issued by MUB and other subsidiaries	8,921		9,417
Total long-term debt	$	11,843	$	12,349

(1) Long-term debt assumed through acquisitions.

67

Note 8—Fair Value Measurement and Fair Value of Financial Instruments

Valuation Methodologies

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price) in an orderly transaction between willing market participants at the measurement date. The Company has an established and documented process for determining fair value for financial assets and liabilities that are measured at fair value on either a recurring or nonrecurring basis. When available, quoted market prices are used to determine fair value. If quoted market prices are not available, fair value is based upon valuation techniques that use, where possible, current market-based or independently sourced parameters, such as yield curves, foreign exchange rates, credit spreads, commodity prices and implied volatilities. Valuation adjustments may be made to ensure the financial instruments are recorded at fair value. These adjustments include amounts that reflect counterparty credit quality and that consider the Company's own creditworthiness in determining the fair value of its trading assets and liabilities. For further information related to the valuation methodologies used for certain financial assets and financial liabilities measured at fair value, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Fair Value Hierarchy

In determining fair value, the Company maximizes the use of observable market inputs and minimizes the use of unobservable inputs. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect the Company’s estimate about market data. Based on the observability of the significant inputs used, the Company classifies its fair value measurements in accordance with the three-level hierarchy as defined by GAAP. This hierarchy is based on the quality, observability and reliability of the information used to determine fair value. For further information related to the fair value hierarchy, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Valuation Processes

The Company has established a valuation committee to oversee its valuation framework for measuring fair value and to establish valuation policies and procedures. The valuation committee’s responsibilities include reviewing fair value measurements and categorizations within the fair value hierarchy and monitoring the use of pricing sources, mark-to-model valuations, dealer quotes and other valuation processes. The valuation committee reports to the Company’s Disclosure & Accounting Committee and meets at least quarterly.

Independent price verification is performed periodically by the Company to test the market data and valuations of substantially all instruments measured at fair value on a recurring basis. As part of its independent price verification procedures, the Company compares pricing sources, tests data variances within certain thresholds and performs variance analysis, utilizing third party valuations and both internal and external models. Results are formally reported on a quarterly basis to the valuation committee. For further information related to valuation processes, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

68

Note 8—Fair Value Measurement and Fair Value of Financial Instruments (Continued)

Fair Value Measurements on a Recurring Basis

The following tables present financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2016 and December 31, 2015, by major category and by valuation hierarchy level:

	March 31, 2016
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	36		$	—		$	—		$	36
U.S. government-sponsored agency securities	—			97			—			—			97
State and municipal securities	—			8			—			—			8
Interest rate derivative contracts	1			1,394			2			(254		)	1,143
Commodity derivative contracts	—			367			3			(351		)	19
Foreign exchange derivative contracts	1			111			1			(54		)	59
Equity derivative contracts	—			—			183			(175		)	8
Total trading account assets	2			2,013			189			(834		)	1,370
Securities available for sale:
U.S. Treasury	—			152			—			—			152
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			6,308			—			—			6,308
Privately issued	—			203			—			—			203
Privately issued - commercial mortgage-backed securities	—			1,492			—			—			1,492
Collateralized loan obligations	—			3,227			—			—			3,227
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,581			—			1,581
Other	—			1			32			—			33
Equity securities	8			—			—			—			8
Total securities available for sale	8			11,390			1,613			—			13,011
Other assets:
Mortgage servicing rights	—			—			13			—			13
Interest rate hedging contracts	—			271			—			(205		)	66
Other derivative contracts	—			3			2			(3		)	2
Total other assets	—			274			15			(208		)	81
Total assets	$	10		$	13,677		$	1,817		$	(1,042	)	$	14,462
Percentage of total	—		%	94		%	13		%	(7		)%	100		%
Percentage of total Company assets	—		%	11		%	2		%	(1		)%	12		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	3		$	1,344		$	—		$	(1,150	)	$	197
Commodity derivative contracts	—			330			3			(78		)	255
Foreign exchange derivative contracts	—			130			1			(38		)	93
Equity derivative contracts	—			—			183			—			183
Securities sold, not yet purchased	—			19			—			—			19
Total trading account liabilities	3			1,823			187			(1,266		)	747
Other liabilities:
FDIC clawback liability	—			—			115			—			115
Other derivative contracts	—			1			1			—			2
Total other liabilities	—			1			116			—			117
Total liabilities	$	3		$	1,824		$	303		$	(1,266	)	$	864
Percentage of total	—		%	211		%	35		%	(146		)%	100		%
Percentage of total Company liabilities	—		%	2		%	—		%	(1		)%	1		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

69

Note 8—Fair Value Measurement and Fair Value of Financial Instruments (Continued)

	December 31, 2015
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	37		$	—		$	—		$	37
U.S. government-sponsored agency securities	—			106			—			—			106
State and municipal securities	—			3			—			—			3
Commercial Paper	—			25			—			—			25
Interest rate derivative contracts	—			998			4			(163		)	839
Commodity derivative contracts	—			408			1			(384		)	25
Foreign exchange derivative contracts	1			115			1			(70		)	47
Equity derivative contracts	—			—			222			(217		)	5
Total trading account assets	1			1,692			228			(834		)	1,087
Securities available for sale:
U.S. Treasury	—			594			—			—			594
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			7,201			—			—			7,201
Privately issued	—			151			—			—			151
Privately issued - commercial mortgage-backed securities	—			1,546			—			—			1,546
Collateralized loan obligations	—			3,233			—			—			3,233
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,572			—			1,572
Other	—			1			31			—			32
Equity securities	8			—			—			—			8
Total securities available for sale	8			12,733			1,603			—			14,344
Other assets:
Interest rate hedging contracts	—			73			—			(71		)	2
Other derivative contracts	—			4			1			(4		)	1
Total other assets	—			77			1			(75		)	3
Total assets	$	9		$	14,502		$	1,832		$	(909	)	$	15,434
Percentage of total	—		%	94		%	12		%	(6		)%	100		%
Percentage of total Company assets	—		%	12		%	2		%	(1		)%	13		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	1		$	947		$	—		$	(775	)	$	173
Commodity derivative contracts	—			368			1			(61		)	308
Foreign exchange derivative contracts	1			91			1			(22		)	71
Equity derivative contracts	—			—			221			—			221
Securities sold, not yet purchased	—			23			—			—			23
Total trading account liabilities	2			1,429			223			(858		)	796
Other liabilities:
FDIC clawback liability	—			—			112			—			112
Interest rate hedging contracts	—			14			—			(14		)	—
Other derivative contracts	—			—			2			—			2
Total other liabilities	—			14			114			(14		)	114
Total liabilities	$	2		$	1,443		$	337		$	(872	)	$	910
Percentage of total	—		%	159		%	37		%	(96		)%	100		%
Percentage of total Company liabilities	—		%	1		%	—		%	(1		)%	—		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

70

Note 8—Fair Value Measurement and Fair Value of Financial Instruments (Continued)

The following tables present a reconciliation of the assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2016 and 2015. Level 3 available for sale securities at March 31, 2016 and 2015 primarily consist of direct bank purchase bonds. The Company’s policy is to recognize transfers in and out of Level 1, 2 and 3 as of the end of a reporting period.

	For the Three Months Ended
	March 31, 2016														March 31, 2015
(Dollars in millions)	Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities			Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities
Asset (liability) balance, beginning of period	$	228		$	1,603		$	1	$	(223	)	$	(114	)	$	311		$	1,790		$	2	$	(305	)	$	(107	)
Total gains (losses) (realized/unrealized):
Included in income before taxes	(18		)	—			1		17			(2		)	8			—			1		(10		)	(2		)
Included in other comprehensive income	—			(2		)	—		—			—			—			(3		)	—		—			—
Purchases/additions	—			78			—		—			—			—			9			—		—			—
Settlements	(21		)	(66		)	—		19			—			(13		)	(102		)	—		14			—
Transfers in (out) of level 3	—			—			13		—			—			—			—			—		—			—
Asset (liability) balance, end of period	$	189		$	1,613		$	15	$	(187	)	$	(116	)	$	306		$	1,694		$	3	$	(301	)	$	(109	)
Changes in unrealized gains (losses) included in income before taxes for assets and liabilities still held at end of period	$	(18	)	$	—		$	1	$	17		$	(2	)	$	8		$	—		$	1	$	(10	)	$	(2	)

The following table presents information about significant unobservable inputs related to the Company’s significant Level 3 assets and liabilities at March 31, 2016.

	March 31, 2016
(Dollars in millions)	Level 3 Fair Value		Valuation Technique	Significant Unobservable Input(s)	Range of Inputs		Weighted Average
Securities available for sale:
Direct bank purchase bonds	$	1,581	Return on equity	Market-required return on capital	8.0 - 10.0	%	9.8	%
				Probability of default	0.0 - 25.0	%	0.4	%
				Loss severity	10.0 - 60.0	%	29.2	%
Other liabilities:
FDIC clawback liability	$	115	Discounted cash flow	Probability of default	0.2 - 100.0	%	56.6	%
				Loss severity	0.0 - 100.0	%	30.8	%

The direct bank purchase bonds use a return on equity valuation technique. This technique uses significant unobservable inputs such as market-required return on capital, probability of default and loss severity. Increases (decreases) in any of these inputs in isolation would result in a lower (higher) fair value measurement.

71

Note 8—Fair Value Measurement and Fair Value of Financial Instruments (Continued)

The FDIC clawback liability uses a discounted cash flow valuation technique. This technique uses significant unobservable inputs such as probability of default and loss severity. Increases (decreases) in probability of default and loss severity would result in a lower (higher) liability.

Fair Value Measurement on a Nonrecurring Basis

Certain assets may be measured at fair value on a nonrecurring basis. These assets are subject to fair value adjustments that result from the application of the lower of cost or fair value accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis during the three months ended March 31, 2016 and 2015 that were still held on the consolidated balance sheet as of the respective periods ended, the following tables present the fair value of such assets by the level of valuation assumptions used to determine each fair value adjustment.

	March 31, 2016								Gain (Loss) For the Three Months Ended March 31, 2016
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Loans held for sale	$	5	$	—	$	—	$	5	$	(3	)
Impaired loans	375		—		—		375		(127		)
Premises and equipment	—		—		—		—		(4		)
Other assets:
OREO	2		—		—		2		(1		)
Private equity investments	10		—		—		10		(12		)
Intangible assets	—		—		—		—		(1		)
Total	$	392	$	—	$	—	$	392	$	(148	)

	March 31, 2015								Gain (Loss) For the Three Months Ended March 31, 2015
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Impaired loans	$	46	$	—	$	—	$	46	$	(6	)
Other assets:
OREO	9		—		—		9		—
Private equity investments	7		—		—		7		(5		)
Total	$	62	$	—	$	—	$	62	$	(11	)

Loans include individually impaired loans that are measured based on the fair value of the underlying collateral or the fair value of the loan. The fair value of impaired loans was determined based on appraised values of the underlying collateral or market pricing for the loan, adjusted for management judgment, as of the measurement date. The fair value of OREO was primarily based on independent appraisals. The fair value of private equity investments was determined using a discounted cash flow analysis and market pricing, adjusted for management judgment, as of the measurement date. The fair value of premises and equipment and intangible assets was determined using appraised value and market pricing, adjusted for management judgment, as of the measurement date.

72

Note 8—Fair Value Measurement and Fair Value of Financial Instruments (Continued)

Fair Value of Financial Instruments Disclosures

The tables below present the carrying amount and estimated fair value of certain financial instruments, classified by valuation hierarchy level as of March 31, 2016 and as of December 31, 2015:

	March 31, 2016
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	8,324	$	8,324	$	8,324	$	—	$	—
Securities held to maturity	10,605		10,848		—		10,848		—
Loans held for investment (1)	77,697		79,411		—		—		79,411
Liabilities
Deposits	$	89,500	$	89,548	$	—	$	89,548	$	—
Commercial paper and other short-term borrowings	647		647		—		647		—
Long-term debt	11,843		11,900		—		11,900		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	241	$	241	$	—	$	—	$	241

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

	December 31, 2015
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	4,529	$	4,529	$	4,529	$	—	$	—
Securities held to maturity	10,158		10,207		—		10,207		—
Loans held for investment (1)	76,150		77,640		—		—		77,640
Other assets	16		17		—		—		17
Liabilities
Deposits	$	84,340	$	84,375	$	—	$	84,375	$	—
Commercial paper and other short-term borrowings	1,038		1,038		—		1,038		—
Long-term debt	12,349		12,351		—		12,351		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	243	$	243	$	—	$	—	$	243

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

For further information on methodologies for approximating fair values, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

73

Note 9—Derivative Instruments and Other Financial Instruments Used For Hedging

The Company enters into certain derivative and other financial instruments primarily to assist customers with their risk management objectives and to manage the Company’s exposure to interest rate risk. When entering into derivatives on behalf of customers the Company generally acts as a financial intermediary by offsetting a significant portion of the market risk for these derivatives with third parties. The Company may also enter into derivatives for other risk management purposes. All derivative instruments are recognized as assets or liabilities on the consolidated balance sheets at fair value.

Counterparty credit risk is inherent in derivative instruments. In order to reduce its exposure to counterparty credit risk, the Company utilizes credit approvals, limits, monitoring procedures and master netting and credit support annex agreements. Additionally, the Company considers counterparty credit quality and the creditworthiness of the Company in estimating the fair value of derivative instruments.

The table below presents the notional amounts and fair value amounts of the Company's derivative instruments reported on the consolidated balance sheets, segregated between derivative instruments designated and qualifying as hedging instruments and derivative instruments not designated as hedging instruments as of March 31, 2016 and December 31, 2015, respectively. Asset and liability values are presented gross, excluding the impact of legally enforceable master netting and credit support annex agreements. The fair value of asset and liability derivatives designated and qualifying as hedging instruments and derivatives designated as other risk management are included in other assets and other liabilities, respectively. The fair value of asset and liability trading derivatives are included in trading account assets and trading account liabilities, respectively.

	March 31, 2016						December 31, 2015
			Fair Value						Fair Value
	Notional		Asset		Liability		Notional		Asset		Liability
(Dollars in millions)	Amount		Derivatives		Derivatives		Amount		Derivatives		Derivatives
Cash flow hedges
Interest rate contracts	$	14,300	$	259	$	—	$	15,250	$	68	$	14
Fair value hedges
Interest rate contracts	500		12		—		500		5		—
Not designated as hedging instruments:
Trading
Interest rate contracts	100,017		1,397		1,347		100,932		1,002		948
Commodity contracts	3,410		370		333		3,775		409		369
Foreign exchange contracts	7,060		113		131		5,541		117		93
Equity contracts	3,155		183		183		3,351		222		221
Total Trading	113,642		2,063		1,994		113,599		1,750		1,631
Other risk management	283		5		2		251		5		2
Total derivative instruments	$	128,725	$	2,339	$	1,996	$	129,600	$	1,828	$	1,647

We recognized net losses and net gains of $1 million and $1 million on other risk management derivatives for the three months ended March 31, 2016 and 2015, respectively, which are included in other noninterest income.

Derivatives Designated and Qualifying as Hedging Instruments

The Company uses interest rate derivatives to manage the financial impact on the Company from changes in market interest rates. These instruments are used to manage interest rate risk relating to specified groups of assets and liabilities, primarily LIBOR-based commercial loans and debt issuances. Derivatives that qualify for hedge accounting are designated as either fair value or cash flow hedges. For further information related to the Company’s hedging strategy, see Note 11 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

74

Note 9—Derivative Instruments and Other Financial Instruments Used For Hedging (Continued)

Cash Flow Hedges

The Company used interest rate swaps with a notional amount of $14.3 billion at March 31, 2016 to hedge the risk of changes in cash flows attributable to changes in the designated benchmark interest rate on LIBOR indexed loans. To the extent effective, payments received (or paid) under the swap contract offset fluctuations in interest income on loans caused by changes in the relevant LIBOR index. At March 31, 2016, the weighted average remaining life of the active cash flow hedges was 3.42 years.

For cash flow hedges, the effective portion of the gain or loss on the hedging instruments is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged cash flows are recognized in net interest income. Gains and losses representing hedge ineffectiveness are recognized in noninterest expense in the period in which they arise. At March 31, 2016, the Company expects to reclassify approximately $140 million of income from AOCI to net interest income during the twelve months ending March 31, 2017. This amount could differ from amounts actually realized due to changes in interest rates, hedge terminations and the addition of other hedges subsequent to March 31, 2016.

The following tables present the amount and location of the net gains and losses recorded in the Company’s consolidated statements of income and changes in stockholder’s equity for derivatives designated as cash flow hedges for the three months ended March 31, 2016 and 2015:

	Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)					Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Gain (Loss) Recognized in Income on Derivative Instruments (Ineffective Portion)
	For the Three Months Ended March 31,					For the Three Months Ended March 31,					For the Three Months Ended March 31,
(Dollars in millions)	2016		2015		Location	2016		2015		Location	2016		2015
Derivatives in cash flow hedging relationships
					Interest income	$	43	$	32
Interest rate contracts	$	266	$	119	Interest expense	—		1		Noninterest expense	$	1	$	1
Total	$	266	$	119		$	43	$	33		$	1	$	1

Fair Value Hedges

The Company engages in an interest rate hedging strategy in which one or more interest rate swaps are associated with a specified interest bearing liability, in order to convert the liability from a fixed rate to a floating rate instrument. This strategy mitigates the changes in fair value of the hedged liability caused by changes in the designated benchmark interest rate, U.S. dollar LIBOR.

For fair value hedges, any ineffectiveness is recognized in noninterest expense in the period in which it arises. The change in the fair value of the hedged item and the hedging instrument, to the extent completely effective, offsets with no impact on earnings.

75

Note 9—Derivative Instruments and Other Financial Instruments Used For Hedging (Continued)

The following table presents the gains (losses) on the Company's fair value hedges and hedged item for the three months ended March 31, 2016 and 2015, respectively:

		For the Three Months Ended March 31, 2016
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	7	$	(7	)	$	—
	Total	$	7	$	(7	)	$	—

		For the Three Months Ended March 31, 2015
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	5	$	(4	)	$	1
	Total	$	5	$	(4	)	$	1

Derivatives Not Designated as Hedging Instruments

Trading Derivatives

Derivative instruments classified as trading are primarily derivatives entered into as an accommodation for customers. Trading derivatives are included in trading assets or trading liabilities with changes in fair value reflected in income from trading account activities. The majority of the Company's derivative transactions for customers were essentially offset by contracts with third parties that reduce or eliminate market risk exposures.

The Company offers market-linked CDs, which allow the customer to earn the higher of either a minimum fixed rate of interest or a return tied to either equity, commodity, or currency indices. The Company offsets its exposure to the embedded derivative contained in market-linked CDs with a matched over-the-counter option. Both the embedded derivative (when bifurcated) and hedge options are recorded at fair value with the realized and unrealized changes in fair value recorded in noninterest income within trading account activities.

The following table presents the amount of the net gains and losses for derivative instruments classified as trading reported in the consolidated statements of income under the heading trading account activities for the three months ended March 31, 2016 and 2015:

	Gain or (Loss) Recognized in Income on Derivative Instruments
	For the Three Months Ended
(Dollars in millions)	March 31, 2016		March 31, 2015
Trading derivatives:
Interest rate contracts	$	2	$	(2	)
Foreign exchange contracts	9		6
Commodity contracts	—		1
Total	$	11	$	5

76

Note 9—Derivative Instruments and Other Financial Instruments Used For Hedging (Continued)

Offsetting Assets and Liabilities

The Company primarily enters into derivative contracts and repurchase agreements with counterparties utilizing a standard International Swaps and Derivatives Association Master Agreements and Master Repurchase Agreements, respectively. These agreements generally establish the terms and conditions of the transactions, including a legal right to set-off amounts payable and receivable between the Company and a counterparty, regardless of whether or not such amounts have matured or have contingency features.

The following tables present the offsetting of financial assets and liabilities as of March 31, 2016 and December 31, 2015:

	March 31, 2016
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	2,339	$	1,042	$	1,297	$	55	$	2	$	1,240
Securities purchased under resale agreements	29		—		29		28		—		1
Total	$	2,368	$	1,042	$	1,326	$	83	$	2	$	1,241
Financial Liabilities:
Derivative liabilities	$	1,996	$	1,266	$	730	$	229	$	1	$	500
Securities sold under repurchase agreements	2		—		2		2		—		—
Total	$	1,998	$	1,266	$	732	$	231	$	1	$	500

	December 31, 2015
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	1,828	$	909	$	919	$	60	$	—	$	859
Securities purchased under resale agreements	24		—		24		24		—		—
Total	$	1,852	$	909	$	943	$	84	$	—	$	859
Financial Liabilities:
Derivative liabilities	$	1,647	$	872	$	775	$	180	$	—	$	595
Securities sold under repurchase agreements	36		—		36		36		—		—
Total	$	1,683	$	872	$	811	$	216	$	—	$	595

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Note 10—Accumulated Other Comprehensive Income

The following tables present the change in each of the components of accumulated other comprehensive income and the related tax effect of the change allocated to each component for the three months ended March 31, 2016 and 2015:

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2016
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	266		$	(105	)	$	161
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(43		)	17			(26		)
Net change	223			(88		)	135
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	158			(62		)	96
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(13		)	5			(8		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	150			(59		)	91
Foreign currency translation adjustment	7			(3		)	4
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	3			(3		)
Recognized net actuarial (gain) loss(1)	22			(9		)	13
Net change(1)	16			(6		)	10
Other	(2		)	1			(1		)
Net change in AOCI	$	394		$	(155	)	$	239

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2015
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	119		$	(47	)	$	72
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(33		)	13			(20		)
Net change	86			(34		)	52
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	120			(47		)	73
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(3		)	1			(2		)
Accretion of fair value adjustment on securities available for sale	(2		)	1			(1		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	120			(47		)	73
Foreign currency translation adjustment	(12		)	5			(7		)
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	2			(4		)
Recognized net actuarial (gain) loss(1)	29			(11		)	18
Net change(1)	23			(9		)	14
Net change in AOCI	$	217		$	(85	)	$	132

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

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Note 10—Accumulated Other Comprehensive Income (Continued)

The following table presents the change in accumulated other comprehensive income balances:

For the Three Months Ended March 31, 2015 and 2016:
	Net Unrealized Gains (Losses) on Cash Flow Hedges			Net Unrealized Gains (Losses) on Securities			Foreign Currency Translation Adjustment			Pension and Other Postretirement Benefits Adjustment			Other			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance, December 31, 2014	$	21		$	(145	)	$	(10	)	$	(595	)	$	—		$	(729	)
Other comprehensive income (loss) before reclassifications	72			75			(7		)	—			—			140
Amounts reclassified from AOCI	(20		)	(2		)	—			14			—			(8		)
Balance, March 31, 2015	$	73		$	(72	)	$	(17	)	$	(581	)	$	—		$	(597	)
Balance, December 31, 2015	$	36		$	(151	)	$	(25	)	$	(612	)	$	—		$	(752	)
Other comprehensive income (loss) before reclassifications	161			99			4			—			(1		)	263
Amounts reclassified from AOCI	(26		)	(8		)	—			10			—			(24		)
Balance, March 31, 2016	$	171		$	(60	)	$	(21	)	$	(602	)	$	(1	)	$	(513	)

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Note 11—Employee Pension and Other Postretirement Benefits

The following table summarizes the components of net periodic benefit cost for the three months ended March 31, 2016 and 2015.

	Pension Benefits						Other Postretirement Benefits						Superannuation, SERP and ESBP
	For the Three Months Ended   March 31,						For the Three Months Ended   March 31,						For the Three Months Ended   March 31,
(Dollars in millions)	2016			2015			2016			2015			2016		2015
Components of net periodic benefit cost:
Service cost	$	23		$	25		$	2		$	2		$	1	$	—
Interest cost	26			27			3			3			—		—
Expected return on plan assets	(60		)	(54		)	(5		)	(5		)	—		—
Amortization of prior service credit	(4		)	(4		)	(2		)	(2		)	—		—
Recognized net actuarial loss	19			27			2			1			1		1
Total net periodic benefit cost	$	4		$	21		$	—		$	(1	)	$	2	$	1

Note 12—Commitments, Contingencies and Guarantees

The following table summarizes the Company's commitments:

(Dollars in millions)	March 31, 2016
Commitments to extend credit	$	35,864
Issued standby and commercial letters of credit	$	5,796
Other commitments	$	115

Commitments to extend credit are legally binding agreements to lend to a customer provided there are no violations of any condition established in the contract. Commitments have fixed expiration dates or other termination clauses and may require maintenance of compensatory balances. Since many of the commitments to extend credit may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. Total commitments to extend credit at March 31, 2016 include $3.3 billion to commercial borrowers in the oil and gas sector.

Standby and commercial letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Standby letters of credit are generally contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party, while commercial letters of credit are issued specifically to facilitate foreign or domestic trade transactions. Additionally, the Company enters into risk participations in bankers' acceptances wherein a fee is received to guarantee a portion of the credit risk on an acceptance of another bank. The majority of these types of commitments have terms of 1 year or less. At March 31, 2016, the carrying amount of the Company's risk participations in bankers' acceptances and standby and commercial letters of credit totaled $4 million. Estimated exposure to loss related to these commitments is covered by the allowance for losses on unfunded commitments. The carrying amounts of the standby and commercial letters of credit and the allowance for losses on unfunded credit commitments are included in other liabilities on the consolidated balance sheet.

The credit risk involved in issuing loan commitments and standby and commercial letters of credit is essentially the same as that involved in extending loans to customers and is represented by the contractual amount of these instruments. Collateral may be obtained based on management's credit assessment of the customer.

Other commitments include commitments to fund principal investments and other securities.

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Note 12—Commitments, Contingencies and Guarantees (Continued)

Principal investments include direct investments in private and public companies. The Company issues commitments to provide equity and mezzanine capital financing to private and public companies through direct investments. The timing of future cash requirements to fund such commitments is generally dependent on the investment cycle. This cycle, the period over which privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, can vary based on overall market conditions as well as the nature and type of industry in which the companies operate.

The Company has rental commitments under long-term operating lease agreements. For detail of these commitments, see Note 4 to our Consolidated Financial Statements in our 2015 Form 10-K.

The Company occasionally enters into financial guarantee contracts where a premium is received from another financial institution counterparty to guarantee a portion of the credit risk on interest rate swap contracts entered into between the financial institution and its customer. The Company becomes liable to pay the financial institution only if the financial institution is unable to collect amounts owed to them by their customer. As of March 31, 2016, the current exposure to loss under these contracts totaled $41 million, and the maximum potential exposure to loss in the future was estimated at $65 million.

The Company is subject to various pending and threatened legal actions that arise in the normal course of business. The Company maintains liabilities for losses from legal actions that are recorded when they are determined to be both probable in their occurrence and can be reasonably estimated. Management believes the disposition of all claims currently pending, including potential losses from claims that may exceed the liabilities recorded, and claims for loss contingencies that are considered reasonably possible to occur, will not have a material effect, either individually or in the aggregate, on the Company's consolidated financial condition, results of operations or liquidity.

Note 13—Business Segments

During the fourth quarter of 2015, the composition of the Company's reportable segments was revised to reflect the realignment of its business model in the Americas, which includes MUAH. The realignment consolidated the customer base of the Commercial Banking operating segment, including its products and services, into the activities performed within various other segments. We now have four reportable segments: Regional Bank, U.S. Wholesale Banking, Transaction Banking, and Investment Banking & Markets. Prior period segment results have been revised to conform to the current period presentation. Below is a detailed description of these reportable segments.

Regional Bank

The Regional Bank offers a range of banking products and services to individuals, including high net worth individuals and institutional clients, and businesses generally with up to $500 million in annual revenue, delivered generally through a network of branches, private banking offices, ATMs, broker mortgage referrals, relationship managers, telephone services, and web-based and mobile banking applications. These products and services include mortgages, home equity lines of credit, consumer and commercial loans, deposit accounts, financial planning and investments. The Regional Bank also provides a broad spectrum of commercial credit products including commercial loans, accounts receivable, inventory, and trade financing to corporate customers generally on the U.S. West Coast, and commercial real estate financing nationwide. The Regional Bank is comprised of five main divisions: Residential Lending, Retail Banking, Wealth Markets, Commercial Banking and Real Estate Industries.

The Residential Lending Division provides the centralized origination, underwriting, processing, servicing, collection and administration for consumer assets including residential mortgages.

The Retail Banking Division serves its customers through Private Banking, which provides comprehensive relationship management to clients with up to $3 million in deposits and investment balances at MUB; 330 full-service branches in California and 26 full-service branches in Washington and Oregon, as well as through ATMs, call centers, web-based and mobile internet banking applications and through alliances with other financial institutions. Retail Banking provides checking and deposit products and services; bill and loan payment, merchant, various types of financing and investment services; and products including credit cards.

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Note 13—Business Segments (Continued)

The Wealth Markets Division serves its customers through Private Wealth Management, which provides comprehensive relationship management to clients with over $3 million in deposits and investment balances at MUB; UnionBanc Investment Services LLC, a subsidiary of MUB and a registered broker-dealer and investment advisor; and Asset Management which includes Highmark Capital Management, Inc., a subsidiary of MUB and a registered investment advisor.  Wealth Markets provides investment management and advisory services to institutional clients, wealth planning, deposits and risk management strategies, trust and estate administration, as well as investment sub-advisory services to unaffiliated funds. Products provided to its customers include traditional brokerage, managed accounts, annuities, mutual funds, fixed income products and insurance and customized lending.

The Commercial Banking Division provides a broad spectrum of commercial credit products including commercial loans, accounts receivable, inventory, and trade financing primarily to corporate customers with annual revenues up to $500 million based on the U.S. West Coast. Commercial Banking offers its customers a range of noncredit services and products, which include global treasury management and capital markets solutions, foreign exchange and various interest rate risk and commodity risk management products through cooperation with other segments.

The Real Estate Industries Division serves professional real estate investors and developers. Real Estate Industries, through its Community Development Finance unit, makes tax credit investments in affordable housing projects, as well as construction and permanent financing.

U.S. Wholesale Banking

U.S. Wholesale Banking provides commercial lending products, including commercial loans, lines of credit and project financing, to corporate customers with revenue greater than $500 million. The segment employs an industry-focused strategy including dedicated coverage teams in General Industries, Power and Utilities, Oil and Gas, Telecom and Media, Technology, Healthcare and Nonprofit, Public Finance, and Financial Institutions (predominantly Insurance and Asset Managers). By working with the Company's other segments, U.S. Wholesale Banking offers its customers a range of noncredit services, which include global treasury management, capital market solutions, and various foreign exchange, interest rate risk and commodity risk management products.

Transaction Banking

Transaction Banking works alongside the Company's other segments to provide working capital management and asset servicing solutions, including deposits and treasury management, trade finance, and institutional trust and custody, to the Company's customers. The client base consists of financial institutions, corporations, government agencies, insurance companies, mutual funds, investment managers and non-profit organizations.

Investment Banking & Markets

Investment Banking & Markets, which includes Global Capital Markets of the Americas, works with the Company's other segments to provide customers structured credit services, including project finance, leasing and equipment finance, commercial finance, funds finance and securitizations. Investment Banking & Markets also provides capital markets solutions, including syndicated loans, equity and debt underwriting, tax equity and merchant banking investments; risk management solutions, including foreign exchange, interest rate and energy risk management solutions; and facilitates merchant and investment banking-related transactions.

Other

"Other" includes the Asian Corporate Banking segment, Corporate Treasury and the impact of certain corporate activities. The Asian Corporate Banking segment offers a range of credit, deposit, and investment management products and services to companies located primarily in the U.S. that are affiliated with companies headquartered in Japan and other Asian countries. Corporate Treasury is responsible for ALM, wholesale funding and the ALM investment and derivatives hedging portfolios. These treasury management activities are carried out to manage the net interest rate and liquidity risks of the Company's balance sheet and to manage those risks within the guidelines established by ALCO. For additional discussion regarding these risk management activities, see Part I, Item 3. “Quantitative and Qualitative Disclosures About Market Risk” in this Form 10-Q.

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Note 13—Business Segments (Continued)

Additionally, "Other" is comprised of certain corporate activities of the Company; the net impact of funds transfer pricing charges and credits allocated to the reportable segments; the residual costs of support groups; fees from affiliates and noninterest expenses associated with BTMU's U.S. branch banking operations; the unallocated allowance; goodwill, intangible assets, and the related amortization/accretion associated with the Company's privatization transaction; the elimination of the fully taxable-equivalent basis amount; the difference between the marginal tax rate and the consolidated effective tax rate; and the FDIC covered assets.

The information, set forth in the tables that follow, is prepared using various management accounting methodologies to measure the performance of the individual segments. Unlike GAAP there is no standardized or authoritative guidance for management accounting. Consequently, reported results are not necessarily comparable with those presented by other companies and they are not necessarily indicative of the results that would be reported by the business units if they were unique economic entities. The management reporting accounting methodologies, which are enhanced from time to time, measure segment profitability by assigning balance sheet and statements of income items to each operating segment. Methodologies that are applied to the measurement of segment profitability include a funds transfer pricing system, an activity-based costing methodology, other indirect costs and a methodology to allocate the provision for credit losses. The funds transfer pricing system assigns a cost of funds or a credit for funds to assets or liabilities based on their type, maturity or repricing characteristics between Corporate Treasury and the operating segments. A segment receives a funding credit from Corporate Treasury for its liabilities. Conversely, a segment is assigned a charge by Corporate Treasury to fund its assets. Certain indirect costs, such as operations and technology expense, are allocated to the segments based on an activity-based costing methodology. Other indirect costs, such as corporate overhead, are allocated to the segments based on internal surveys and metrics that serve as proxies for estimated usage. During the normal course of business, the Company occasionally changes or updates its management accounting methodologies or organizational structure. During the fourth quarter of 2015, the Company revised its management reporting accounting methodology to exclude the impact of the business integration initiative from the measurement of segment profitability. Fees from affiliates and noninterest expenses associated with BTMU's U.S. branch banking operations are now included within "Other". Prior period results have been adjusted to reflect these changes.

The Company generally applies a "market view" perspective in measuring the business segments. The market view is a measurement of customer markets aggregated to show all revenues generated and expenses incurred from all products and services sold to those customers regardless of where product areas organizationally report. Therefore, revenues and expenses are included in both the business segment that provides the service and the business segment that manages the customer relationship. The duplicative results from this internal management accounting view are eliminated in "Reconciling Items."

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Note 13—Business Segments (Continued)

As of and for the Three Months Ended March 31, 2016:
(Dollars in millions)	Regional Bank			U.S. Wholesale Banking			Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	482		$	108		$	121	$	59		$	27		$	(100	)	$	697
Noninterest income (expense)	114			28			46		25			232			(50		)	395
Total revenue	596			136			167		84			259			(150		)	1,092
Noninterest expense	399			37			111		35			342			(48		)	876
(Reversal of) provision for credit losses	(2		)	126			2		31			5			—			162
Income (loss) before income taxes and including noncontrolling interests	199			(27		)	54		18			(88		)	(102		)	54
Income tax expense (benefit)	61			(11		)	21		(12		)	(2		)	(40		)	17
Net income (loss) including noncontrolling interests	138			(16		)	33		30			(86		)	(62		)	37
Deduct: net loss from noncontrolling interests	—			—			—		—			12			—			12
Net income (loss) attributable to MUAH	$	138		$	(16	)	$	33	$	30		$	(74	)	$	(62	)	$	49
Total assets, end of period	$	62,322		$	15,039		$	2,524	$	11,971		$	31,197		$	(2,144	)	$	120,909

As of and for the Three Months Ended March 31, 2015:
(Dollars in millions)	Regional Bank		U.S. Wholesale Banking		Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	479	$	100	$	115	$	60		$	20		$	(91	)	$	683
Noninterest income (expense)	111		32		43		31			166			(48		)	335
Total revenue	590		132		158		91			186			(139		)	1,018
Noninterest expense	425		43		100		30			296			(45		)	849
(Reversal of) provision for credit losses	6		2		1		(7		)	3			(2		)	3
Income (loss) before income taxes and including noncontrolling interests	159		87		57		68			(113		)	(92		)	166
Income tax expense (benefit)	45		34		22		13			(44		)	(36		)	34
Net income (loss) including noncontrolling interests	114		53		35		55			(69		)	(56		)	132
Deduct: net loss from noncontrolling interests	—		—		—		—			5			—			5
Net income (loss) attributable to MUAH	$	114	$	53	$	35	$	55		$	(64	)	$	(56	)	$	137
Total assets, end of period	$	62,224	$	13,263	$	1,624	$	11,149		$	27,606		$	(2,168	)	$	113,698

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PART II. OTHER INFORMATION

Item 1.   Legal Proceedings

We are subject to various pending and threatened legal actions that arise in the normal course of business. We maintain liabilities for losses from legal actions that are recorded when they are determined to be both probable in their occurrence and can be reasonably estimated. We believe the disposition of all claims currently pending, including potential losses from claims that may exceed the liabilities recorded, and claims for loss contingencies that are considered reasonably possible to occur, will not have a material effect, either individually or in the aggregate, on our consolidated financial position, results of operations, or liquidity.

Item 1A.   Risk Factors

For a discussion of risk factors relating to our business, please refer to Part I, Item 1A. of our 2015 Form 10-K, which is incorporated by reference herein; in addition to the following information:

Company Factors

We are subject to operational risks, including cyber-security risks

We are subject to many types of operational risks throughout our organization. Operational risk is the potential loss from our operations due to factors, such as failures in internal control, systems failures, cyber-security risks or external events, that do not fall into the market risk or credit risk categories described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part I, Item 2. of this Form 10-Q. Operational risk includes execution risk related to operational initiatives, such as implementation of our technology enhancement projects; increased reliance on internally developed models for risk and finance management, including models associated with regulatory capital requirements; legal and compliance risk; the risk of fraud or theft by employees, customers or outsiders; unauthorized transactions by employees or operational errors, including clerical or record-keeping errors or those resulting from faulty or disabled computer or telecommunications systems; and operational risks related to use of third party service providers. A discussion of risks associated with regulatory compliance appears in Part I, Item 1A. of our 2015 Form 10-K under the caption “The effects of changes or increases in, or supervisory enforcement of, banking or other laws and regulations or governmental fiscal or monetary policies could adversely affect us.”

Our operations rely on the secure processing, storage, transmission and reporting of personal, confidential and other sensitive information or data in our computer systems, networks and business applications. Although we take protective measures, our computer systems may be vulnerable to breaches, unauthorized access, misuse, computer viruses or other malicious code, and other events that could have significant negative consequences to us. Such events could result in interruptions or malfunctions in our operations or our customers’ operations; interception, misuse or mishandling of personal, confidential or proprietary information and data; or processing of unauthorized transactions or loss of funds. These events could result in litigation and financial losses that are either not insured against or not fully covered by our insurance, and regulatory consequences or reputational harm, any of which could harm our competitive position, operating results and financial condition. These types of incidents can remain undetected for extended periods of time, thereby increasing the associated risks. We may also be required to expend significant resources to modify our protective measures or to investigate and remediate vulnerabilities or exposures arising from cyber-security risks. We may also be required to expend significant resources to cover costs imposed on us as a result of breaches of bank card information occurring at retail merchants and other businesses.

We depend on the continued efficacy of our technical systems, operational infrastructure, relationships with third parties and our employees in our day-to-day and ongoing operations. Our dependence upon automated systems to record and process transactions may further increase the risk that technical system flaws or employee tampering or manipulation of those systems will result in losses that are difficult to detect or data which is not reliable. With regard to the physical infrastructure that supports our operations, we have taken measures to implement backup systems and other safeguards, but our ability to conduct business may be adversely affected by any disruption to that infrastructure, including disruptions from natural disasters or other causes. Failures in our internal control or operational systems, security breaches or service interruptions, or those of our third-party service providers, could impair our ability to operate our business and result in potential liability to customers,

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reputational damage and regulatory intervention, any of which could harm our operating results and financial condition.

MUB and reportedly other financial institutions have been the target of various denial-of-service or other cyber-attacks (including attempts to inject malicious code and viruses into our computer systems) as part of what appears to be a coordinated effort to disrupt the operations of financial institutions and potentially test their cyber-security in advance of future and more advanced cyber-attacks. These denial-of-service and other attacks have not breached MUB's data security systems, but require substantial resources to defend, and may affect customer satisfaction and behavior. To date we have not experienced any material losses relating to cyber-attacks or other information security breaches, but there can be no assurance that we will not suffer such losses or information security breaches in the future. While we have a variety of cyber-security measures in place, the consequences to our business of such attacks cannot be predicted with any certainty.

In addition, there have been increasing efforts on the part of third parties to breach data security at financial institutions as well as at other types of companies, such as large retailers, or with respect to financial transactions, including through the use of social engineering schemes such as “phishing.” The ability of our customers to bank remotely, including online and through mobile devices, requires secure transmissions of confidential information and increases the risk of data security breaches which would expose us to financial claims by customers or others and which could adversely affect our reputation. Even if cyber-attacks and similar tactics are not directed specifically at MUB or our third-party service providers, such attacks on other large financial institutions could disrupt the overall functioning of the financial system and undermine consumer confidence in banks generally, to the detriment of other financial institutions, including MUB.

In March 2015, the Federal bank regulators issued two related statements regarding cyber-security. One statement indicates financial institutions should design multiple layers of security controls to establish lines of defense and to ensure that their risk management processes also address the risk posed by compromised customer credentials, including security measures to reliably authenticate customers accessing internet-based services of the financial institution. The other statement indicates financial institution’s management is expected to maintain sufficient business continuity planning processes to ensure the rapid recovery, resumption and maintenance of the institution’s operations after a cyber-attack involving destructive malware. A financial institution is also expected to develop appropriate processes to enable recovery of data and business operations and address rebuilding network capabilities and restoring data if the institution or its critical service providers fall victim to this type of cyber-attack. Although these regulatory statements state they do not contain any new regulatory expectations, we are continuing to evaluate them as they do indicate that the regulators regard cyber-security to be a matter of great importance for U.S. financial institutions. A financial institution which fails to observe the regulatory guidance could be subject to various regulatory sanctions, including financial penalties.

In July 2015, the Federal bank regulators announced the issuance of a cyber-security assessment tool, the output of which can assist a financial institution’s senior management and board of directors in assessing the institution’s cyber-security risk and preparedness. The first part of the assessment tool is the inherent risk profile, which aims to assist management in determining an institution’s level of cyber-security risk. The second part of the assessment tool is cyber-security maturity, which is designed to help management assess whether their controls provide the desired level of preparedness. The Federal bank regulators plan to utilize the assessment tool as part of their examination process when evaluating financial institutions’ cyber-security preparedness in information technology and safety and soundness examinations and inspections. Failure to effectively utilize this tool could result in regulatory criticism.  Significant resources may be required to adequately implement the tool and address any assessment concerns regarding preparedness. Management conducted an initial cyber-security assessment leveraging this tool, and is currently addressing any concerns from the assessment.

We may also be subject to disruptions of our operating systems arising from other events that are wholly or partially beyond our control, such as electrical, internet or telecommunications outages, natural disasters (such as major seismic events), terrorist attacks or unexpected difficulties with the implementation of our technology enhancement projects, which may give rise to disruption of service to customers and to financial loss or liability in ways which cannot be predicted with any certainty. Our business recovery plan may not work as intended or may not prevent significant interruptions of our operations.

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Item 6.   Exhibits

A list of exhibits to this Form 10-Q is set forth on the Exhibit Index immediately preceding such exhibits and is incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	MUFG AMERICAS HOLDINGS CORPORATION (Registrant)
Date: May 9, 2016	By:	/s/ STEPHEN E. CUMMINGS
		Stephen E. Cummings President and Chief Executive Officer (Principal Executive Officer)
Date: May 9, 2016	By:	/s/ JOHN F. WOODS
		John F. Woods Chief Financial Officer (Principal Financial Officer)
Date: May 9, 2016	By:	/s/ ROLLAND D. JURGENS
		Rolland D. Jurgens Controller and Chief Accounting Officer (Principal Accounting Officer)

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EXHIBIT INDEX

Exhibit No.	Description
31.1	Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002(1)
31.2	Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002(1)
32.1	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002(1)(2)
32.2	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002(1)(2)
101	Pursuant to Rule 405 of Regulation S-T, the following financial information from the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2016, is formatted in XBRL interactive data files: (i) Consolidated Statements of Income; (ii) Consolidated Statements of Comprehensive Income; (iii) Consolidated Balance Sheets; (iv) Consolidated Statements of Changes in Stockholder's Equity; (v) Consolidated Statements of Cash Flows; and (vi) Notes to Financial Statements(1)

(1) Filed herewith.

(2) In accordance with Item 601(b)(32)(ii) of Regulation S-K and SEC Release No. 34-47986, the certifications furnished in Exhibits 32.1 and 32.2 hereto are deemed to accompany this Form 10-Q and will not be deemed "filed" for purposes of Section 18 of the Exchange Act. Such certifications will not be deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act.

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Stephen E. Cummings, certify that:

1. I have reviewed this quarterly report on Form 10-Q of MUFG Americas Holdings Corporation (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting;

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Date: November 9, 2015

By:	/s/ STEPHEN E. CUMMINGS
	Stephen E. Cummings President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, John F. Woods, certify that:

1. I have reviewed this quarterly report on Form 10-Q of MUFG Americas Holdings Corporation (the "Registrant");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting;

5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize and report financial information; and

a) any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal control over financial reporting.

Date: November 9, 2015

By:	/s/ JOHN F. WOODS
	John F. Woods Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report of MUFG Americas Holdings Corporation (the "Company") on Form 10-Q for the period ended March 31, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Stephen E. Cummings, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 9, 2015

By:	/s/ STEPHEN E. CUMMINGS
	Stephen E. Cummings President and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report of MUFG Americas Holdings Corporation (the "Company") on Form 10-Q for the period ended March 31, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, John F. Woods, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 9, 2015

By:	/s/ JOHN F. WOODS
	John F. Woods Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 30, 2016
Document And Entity Information
Entity Registrant Name	MUFG Americas Holdings Corporation
Entity Central Index Key	0001011659
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		136,330,831
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Trading Symbol	ub

XML

Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest Income
Loans	$ 697	$ 678
Securities	109	102
Other	6	3
Total interest income	812	783
Interest Expense
Deposits	49	52
Commercial paper and other short-term borrowings	1	1
Long-term debt	65	47
Total interest expense	115	100
Net Interest Income	697	683
Provision for credit losses	162	3
Net interest income after provision for credit losses	535	680
Noninterest Income
Service charges on deposit accounts	49	49
Trust and investment management fees	31	28
Trading account activities	13	8
Securities gains, net	13	3
Credit facility fees	27	30
Merchant banking fees	14	20
Brokerage commissions and fees	13	13
Card processing fees, net	9	8
Fees from affiliates	200	166
Other, net	26	10
Total noninterest income	395	335
Noninterest Expense
Salaries and employee benefits	543	567
Net occupancy and equipment	76	80
Professional and outside services	102	77
Software Costs	36	28
Regulatory assessments	7	10
Intangible asset amortization	14	13
Other	98	74
Total noninterest expense	876	849
Income before income taxes and including noncontrolling interests	54	166
Income tax expense	17	34
Net Income Including Noncontrolling Interests	37	132
Deduct: Net loss from noncontrolling interests	12	5
Net Income Attributable to MUAH	$ 49	$ 137

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net Income Attributable to MUAH	$ 49	$ 137
Other Comprehensive Income (Loss), Net of Tax:
Net change in unrealized gains (losses) on cash flow hedges	135	52
Net change in unrealized gains (losses) on investment securities	91	73
Foreign currency translation adjustment	4	(7)
Pension and other postretirement benefit adjustments	10	14
Other Comprehensive Income Other, Net of Tax, Portion Attributable to Parent	(1)	0
Total other comprehensive income (loss)	239	132
Comprehensive Income (Loss) Attributable to MUAH	288	269
Comprehensive loss from noncontrolling interests	(12)	(5)
Total Comprehensive Income (Loss)	$ 276	$ 264

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2016		Dec. 31, 2015
Assets
Cash and due from banks	$ 1,599		$ 1,756
Interest bearing deposits in banks	6,696		2,749
Federal funds sold and securities purchased under resale agreements	29		24
Total cash and cash equivalents	8,324		4,529
Trading account assets	1,370		1,087
Securities available for sale	13,011		14,344
Securities held to maturity (Fair value $10,848 at March 31, 2016 and $10,207 at December 31, 2015)	10,605		10,158
Loans held for investment	79,299	[1]	77,599
Allowance for loan losses	(879)		(721)
Loans held for investment, net	78,420		76,878
Premises and equipment, net	632		608
Goodwill	3,225		3,225
Other assets	5,322		5,387
Total assets	120,909		116,216
Deposits:
Noninterest bearing	38,556		32,463
Interest bearing	50,944		51,877
Total deposits	89,500		84,340
Commercial paper and other short-term borrowings	647		1,038
Long-term debt	11,843		12,349
Trading account liabilities	747		796
Other liabilities	2,203		2,017
Total liabilities	$ 104,940		$ 100,540
Commitments, contingencies and guarantees—See Note 12
MUAH stockholder's equity:
Authorized 5,000,000 shares; no shares issued or outstanding	$ 0		$ 0
Authorized 300,000,000 shares, 136,330,831 shares issued and outstanding as of March 31, 2016 and December 31, 2015			136
Additional paid-in capital			7,241
Retained earnings			8,836
Accumulated other comprehensive loss	(513)		(752)
Total MUAH stockholder's equity	15,758		15,461
Noncontrolling interests	211		215
Total equity	15,969		15,676
Total liabilities and equity	$ 120,909		$ 116,216

[1] Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fair value of securities held to maturity	$ 10,207
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value, (dollars per share)	$ 1	$ 1
Common stock, share authorized	300,000,000	300,000,000
Common stock, share issued	136,330,831	136,330,831
Common stock, share outstanding	136,330,831	136,330,831

XML

Consolidated Statements of Changes in Stockholder's Equity - USD ($) $ in Millions		Total	Common Stock	Additional Paid-in Capital	Retained Earnings		Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balance, beginning (Previously Reported) at Dec. 31, 2014		$ 230
Balance, beginning at Dec. 31, 2014		15,168	$ 136	$ 7,232	$ 8,265		$ (729)	$ 264
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		132			137			(5)
Other comprehensive income (loss), net of tax		132					132
Compensation-restricted stock units		9		9
Other		(9)			0	[1]		(9)
Net change		264		9	137		132	(14)
Balance, ending at Mar. 31, 2015		15,432	136	7,241	8,402		(597)	250
Balance, beginning (Previously Reported) at Dec. 31, 2015		181
Balance, beginning at Dec. 31, 2015		15,676	136	7,241	8,836		(752)	215
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		37			49			(12)
Other comprehensive income (loss), net of tax		239					239
Compensation-restricted stock units		9		9	0
Other	[1]	8			0			8
Net change		293		9	49		239	(4)
Balance, ending at Mar. 31, 2016		$ 15,969	$ 136	$ 7,250	$ 8,885		$ (513)	$ 211

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XML

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Cash Flows [Abstract]
Interest Paid	$ 106	$ 76
Cash Flows from Operating Activities:
Net income including noncontrolling interests	37	132
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	162	3
Depreciation, amortization and accretion, net	80	111
Stock-based compensation—restricted stock units	15	9
Deferred income taxes	(25)	113
Net gains on sales of securities	(13)	(3)
Net decrease (increase) in trading account assets	(283)	(119)
Net decrease (increase) in other assets	402	(80)
Net increase (decrease) in trading account liabilities	(49)	50
Net increase (decrease) in other liabilities	79	181
Loans originated for sale	(519)	(362)
Net proceeds from sale of loans originated for sale	514	291
Pension and other benefits adjustment	(149)	(158)
Other, net	7	0
Total adjustments	221	36
Net cash provided by (used in) operating activities	258	168
Cash Flows from Investing Activities:
Proceeds from sales of securities available for sale	(1,658)	(324)
Proceeds from paydowns and maturities of securities available for sale	365	441
Purchases of securities available for sale	(529)	(485)
Proceeds from paydowns and maturities of securities held to maturity	360	377
Purchases of securities held to maturity	(866)	(1,146)
Proceeds from sales of loans	34	36
Net decrease (increase) in loans	(1,620)	(91)
Purchases of other investments	(46)	(77)
Other, net	(79)	(52)
Net cash provided by (used in) investing activities	(723)	(673)
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	5,149	(3,263)
Net increase (decrease) in commercial paper and other short-term borrowings	(391)	771
Proceeds from issuance of long-term debt	0	2,697
Repayment of long-term debt	(500)	(817)
Other, net	(6)	(11)
Change in noncontrolling interests	8	(9)
Net cash provided by (used in) financing activities	4,260	(632)
Net change in cash and cash equivalents	3,795	(1,137)
Cash and cash equivalents at beginning of period	4,529	5,751
Cash and cash equivalents at end of period	8,324	4,614
Cash Paid During the Period For:
Income taxes, net	50	21
Supplemental Schedule of Noncash Investing and Financing Activities:
Net transfer of loans held for investment to loans held for sale	(81)
Transfer of loans held for investment to other real estate owned assets	$ 0	$ 3

XML

Summary of Significant Accounting Policies, Nature of Operations and Other Developments

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies, Nature of Operations and Other Developments

Summary of Significant Accounting Policies and Nature of Operations

MUFG Americas Holdings Corporation (MUAH) is a financial holding company and a bank holding company whose principal subsidiary is MUFG Union Bank, N.A. (MUB). MUAH provides a wide range of financial services to consumers, small businesses, middle-market companies and major corporations nationally and internationally. The unaudited Consolidated Financial Statements of MUFG Americas Holdings Corporation, its subsidiaries, and its consolidated variable interest entities (the Company) have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Rules and Regulations of the SEC. However, they do not include all of the disclosures necessary for annual financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included. The results of operations for the first quarter of 2016 are not necessarily indicative of the operating results anticipated for the full year. These unaudited Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2015 (2015 Form 10-K).

The preparation of financial statements in conformity with GAAP also requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Although such estimates contemplate current conditions and management’s expectations of how they may change in the future, it is reasonably possible that actual results could differ significantly from those estimates. This could materially affect the Company’s results of operations and financial condition in the near term. Significant estimates made by management in the preparation of the Company’s financial statements include, but are not limited to, the evaluation of other-than-temporary impairment on investment securities (Note 3), the allowance for credit losses (Note 4), goodwill impairment, fair value of financial instruments (Note 8), hedge accounting (Note 9), pension accounting (Note 11), income taxes, and transfer pricing.

Recently Issued Accounting Pronouncements

Revenue from Contracts with Customers

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance on the core principle that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU applies to all contracts with customers, except financial instruments, guarantees, lease contracts, insurance contracts and certain non-monetary exchanges. It provides the following five-step revenue recognition model: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. In addition, the ASU requires additional disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015 the FASB issued ASU 2015-14, Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 to interim and annual periods beginning on January 1, 2018, with early adoption permitted in 2017. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which amends the accounting, presentation, and disclosure requirements for certain financial instruments. The ASU requires that all equity investments be recorded at fair value through net income (other than those accounted for under equity method or result in consolidation of the investee); however, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The ASU also requires an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability under the fair value option. The ASU also clarifies that an entity must evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. In addition, the ASU amends the presentation and disclosure requirements for financial instruments and now requires the use of an exit price notion when measuring the fair value of financial instruments for disclosure purposes. This guidance is effective for interim and annual periods beginning on January 1, 2018, with early adoption permitted for the amendments to the accounting for financial liabilities under the fair value option. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Accounting for Leases

In February 2016, the FASB issued ASU 2016-02, Leases, which will require entities that lease assets (i.e., lessees) to recognize assets and liabilities on their balance sheet for the rights and obligations created by those leases (where lease terms are greater than twelve months).  The accounting by entities that own the assets leased (i.e., lessors) will remain largely unchanged; however, leveraged lease accounting will no longer be permitted for leases that commence after the effective date. The ASU will also require qualitative and quantitative disclosures about the amount, timing and uncertainty of cash flows arising from leases.  The guidance is effective for interim and annual periods beginning on January 1, 2019 and requires a modified retrospective approach, with early adoption permitted. Management is currently assessing the impact of the guidance on the Company’s financial position and results of operations.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships

In March 2016, the FASB issued ASU 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships, which clarifies that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument does not, in and of itself, require dedesignation of that hedging relationship. However, entities will still need to evaluate whether all other hedge accounting criteria continue to be met. This ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Entities have the option to adopt the new guidance on a prospective basis to new derivative contract novations or on a modified retrospective basis. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Contingent Put and Call Options in Debt Instruments

In March 2016, the FASB issued ASU 2016-06, Contingent Put and Call Options in Debt Instruments, which clarifies the requirements for assessing whether contingent put or call options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. Current guidance indicates that a contingently exercisable put or call option is clearly and closely related to the debt host if it is indexed only to interest rates or credit risk, but was unclear whether the nature of the exercise contingency itself should be considered in this evaluation. The ASU clarifies that an entity would not separately assess whether the contingency itself is indexed only to interest rates or the credit risk of the entity to conclude the option is clearly and closely related. This guidance is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. The new guidance is required to be applied on a modified retrospective basis to all existing and future debt instruments and an entity will be able to elect the fair value option at transition for the entire debt instrument. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Simplifying the Transition to the Equity Method of Accounting

In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting, which eliminates the requirement to apply the equity method of accounting retrospectively when an investor obtains significant influence over an existing investee.   The ASU requires that (1) the equity method be applied prospectively from the date significant influence is obtained, and (2) investors add the cost of acquiring the additional interest in the investee to the current basis of their previously held interest.  The ASU also provides specific guidance for available-for-sale securities that become eligible for the equity method whereby any unrealized gain or loss recorded within accumulated other comprehensive income must be recognized in earnings on the date the investment initially qualifies for the equity method.   The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted.  Adoption of this guidance will not significantly impact the Company’s financial position or results of operations.

Principal versus Agent Considerations (Reporting Revenue Gross versus Net)

In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The ASU amends ASU 2014-09, Revenue from Contracts with Customers, with respect to assessing whether an entity is a principal (and thus presents revenue gross) or an agent (and thus presents revenue net). The amendments retain the guidance that the principal in an arrangement controls a good or service before it is transferred to a customer and clarify: (1) that an entity must first identify the specified good or service being provided to the customer; (2) that the unit of account for the principal versus agent assessment is each specified good or service promised in a contract; (3) indicators and examples to help an entity evaluate whether it is the principal; and (4) how to assess whether an entity controls services performed by another party. The ASU is effective upon the adoption of ASU 2014-09, which is effective for periods beginning January 1, 2018, with early adoption permitted in 2017. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Accounting for Share-Based Payments

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The ASU requires recognition of any difference between the deduction for tax purposes and compensation cost recognized for financial reporting purposes as income tax expense or benefit in the income statement (as opposed to recognizing certain excess tax benefits in additional paid-in capital).  The tax effects of exercised or vested awards are now also required to be treated as discrete items in the reporting period in which they occur (rather than through the annual estimated effective tax rate) and excess tax benefits must be recognized regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits are now classified along with other income tax cash flows as an operating activity, as opposed to a financing activity.  With respect to accounting for forfeitures, an entity can now make an accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur.  Additionally, entities may now partially settle awards in cash up to the maximum statutory tax rates in the applicable jurisdictions, without precluding equity classification of the award (current GAAP allows only up to the minimum statutory withholding requirements). The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

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Correction of Prior Period Amounts

3 Months Ended

Mar. 31, 2016

Accounting Changes and Error Corrections [Abstract]

Accounting Changes and Error Corrections

Correction of Prior Period Amounts

During the first quarter of 2016, the Company corrected a prior period error related to the recognition of income associated with two LIHC investment fund structures. This error affected historical periods beginning in 2010 through December 31, 2015. The Company recognized certain noninterest income amounts related to transactions with the two LIHC investment fund structures. These amounts should not have been recorded in earnings until the investments were liquidated or deconsolidated. This error was not material to any of the Company's previously issued financial statements. In accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements (SAB 108), the consolidated balance sheets as of December 31, 2015 and December 31, 2014 and the consolidated statements of changes in stockholder's equity for the three months ended March 31, 2016 and 2015 have been adjusted to reflect the correction of this error.

The following tables show the affected line items within the consolidated financial statements:

	December 31, 2015
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	5,377	$	10		$	5,387
Other liabilities	2,023		(6		)	2,017
Retained earnings	8,854		(18		)	8,836
Noncontrolling interests	181		34			215

	December 31, 2014
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	4,630	$	10		$	4,640
Other liabilities	1,897		(6		)	1,891
Retained earnings	8,283		(18		)	8,265
Noncontrolling interests	230		34			264

XML

Securities

3 Months Ended

Mar. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Securities

—Securities

Securities Available for Sale

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains, gross unrealized losses and fair values of securities are presented below.

	March 31, 2016
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	148	$	4	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	6,302		16		10		6,308
Privately issued	202		2		1		203
Privately issued - commercial mortgage-backed securities	1,469		24		1		1,492
Collateralized loan obligations	3,267		—		40		3,227
Other	7		—		—		7
Asset Liability Management securities	11,395		46		52		11,389
Other debt securities:
Direct bank purchase bonds	1,560		45		24		1,581
Other	32		1		—		33
Equity securities	6		2		—		8
Total securities available for sale	$	12,993	$	94	$	76	$	13,011

	December 31, 2015
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	596	$	1	$	3	$	594
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	7,298		1		98		7,201
Privately issued	150		2		1		151
Privately issued - commercial mortgage-backed securities	1,566		5		25		1,546
Collateralized loan obligations	3,266		1		34		3,233
Other	7		—		—		7
Asset Liability Management securities	12,883		10		161		12,732
Other debt securities:
Direct bank purchase bonds	1,549		45		22		1,572
Other	32		—		—		32
Equity securities	6		2		—		8
Total securities available for sale	$	14,470	$	57	$	183	$	14,344

The Company’s securities available for sale with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, identified for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	$	649	$	3	$	2,006	$	7	$	2,655	$	10
Privately issued	15		—		35		1		50		1
Privately issued - commercial mortgage-backed securities	119		—		82		1		201		1
Collateralized loan obligations	1,765		14		1,340		26		3,105		40
Other	—		—		1		—		1		—
Asset Liability Management securities	2,548		17		3,464		35		6,012		52
Other debt securities:
Direct bank purchase bonds	236		8		655		16		891		24
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	2,784	$	25	$	4,124	$	51	$	6,908	$	76

	December 31, 2015
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
U.S. Treasury	$	295	$	3	$	—	$	—	$	295	$	3
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	4,692		57		2,278		41		6,970		98
Privately issued	39		—		38		1		77		1
Privately issued - commercial mortgage-backed securities	1,154		24		65		1		1,219		25
Collateralized loan obligations	1,497		11		1,290		23		2,787		34
Asset Liability Management securities	7,677		95		3,671		66		11,348		161
Other debt securities:
Direct bank purchase bonds	157		4		686		18		843		22
Other	2		—		—		—		2		—
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	7,836	$	99	$	4,362	$	84	$	12,198	$	183

At March 31, 2016, the Company did not have the intent to sell any securities in an unrealized loss position before a recovery of the amortized cost, which may be at maturity. The Company also believes that it is more likely than not that it will not be required to sell the securities prior to recovery of amortized cost.

Agency residential mortgage-backed securities consist of securities guaranteed by a U.S. government agency or a government-sponsored agency such as Fannie Mae, Freddie Mac or Ginnie Mae. These securities are collateralized by residential mortgage loans and may be prepaid at par prior to maturity. The unrealized losses on agency residential mortgage-backed securities resulted from changes in interest rates and not from changes in credit quality. At March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities because the Company determined that the strength of the issuers’ guarantees through direct obligations or support from the U.S. government is sufficient to protect the Company from losses.

Commercial mortgage-backed securities are collateralized by commercial mortgage loans and are generally subject to prepayment penalties. The unrealized losses on commercial mortgage-backed securities resulted from higher market yields since purchase. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

The Company’s CLOs consist of Cash Flow CLOs. A Cash Flow CLO is a structured finance product that securitizes a diversified pool of loan assets into multiple classes of notes. Cash Flow CLOs pay the note holders through the receipt of interest and principal repayments from the underlying loans unlike other types of CLOs that pay note holders through the trading and sale of underlying collateral. Unrealized losses typically arise from widening credit spreads and deteriorating credit quality of the underlying collateral. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

Other debt securities primarily consist of direct bank purchase bonds, which are not rated by external credit rating agencies. The unrealized losses on these bonds resulted from a higher return on capital expected by the secondary market compared with the return on capital required at the time of origination when the bonds were purchased. The Company estimates the unrealized loss for each security by assessing the underlying collateral of each security. The Company estimates the portion of loss attributable to credit based on the expected cash flows of the underlying collateral using estimates of current key assumptions, such as probability of default and loss severity. Cash flow analysis of the underlying collateral provides an estimate of other-than-temporary impairment, which is performed quarterly when the fair value of a security is lower than its amortized cost and potential impairment is identified. Based on the analysis performed as of March 31, 2016, the Company expects to recover the entire amortized cost basis of these securities.

The fair value of debt securities available for sale by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
(Dollars in millions)	One Year or Less		Over One Year Through Five Years		Over Five Years Through Ten Years		Over Ten Years		Total Fair Value
Asset Liability Management securities:
U.S. Treasury	$	—	$	—	$	152	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	—		17		372		5,919		6,308
Privately issued	—		3		—		200		203
Privately issued - commercial mortgage-backed securities	—		—		37		1,455		1,492
Collateralized loan obligations	—		16		1,858		1,353		3,227
Other	—		2		5		—		7
Asset Liability Management securities	—		38		2,424		8,927		11,389
Other debt securities:
Direct bank purchase bonds	67		346		698		470		1,581
Other	—		1		—		32		33
Total debt securities available for sale	$	67	$	385	$	3,122	$	9,429	$	13,003

The gross realized gains and losses from sales of available for sale securities for the three months endedMarch 31, 2016 and 2015 are shown below. The specific identification method is used to calculate realized gains and losses on sales.

	For the Three Months Ended March 31,
(Dollars in millions)	2016		2015
Gross realized gains	$	13	$	5
Gross realized losses	—		—

Securities Held to Maturity

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains and losses recognized in OCI, carrying amount, gross unrealized gains and losses not recognized in OCI, and fair values of securities held to maturity are presented below. Management has asserted the positive intent and ability to hold these securities to maturity.

	March 31, 2016
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	490	$	—	$	—	$	490	$	12	$	—	$	502
U.S. government-sponsored agencies	200		—		—		200		—		—		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	8,301		4		51		8,254		154		5		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,731		—		70		1,661		82		—		1,743
Total securities held to maturity	$	10,722	$	4	$	121	$	10,605	$	248	$	5	$	10,848

	December 31, 2015
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	489	$	—	$	—	$	489	$	4	$	—	$	493
U.S. government-sponsored agencies	220		—		—		220		—		4		216
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	7,831		4		53		7,782		49		41		7,790
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,740		—		73		1,667		46		5		1,708
Total securities held to maturity	$	10,280	$	4	$	126	$	10,158	$	99	$	50	$	10,207

Amortized cost is defined as the original purchase cost, adjusted for any accretion or amortization of a purchase discount or premium, less principal payments and any impairment previously recognized in earnings. The carrying amount is the difference between the amortized cost and the amount recognized in OCI. The amount recognized in OCI primarily reflects the unrealized gain or loss at date of transfer from available for sale to the held to maturity classification, net of amortization, which is recorded in interest income on securities.

The Company’s securities held to maturity with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, separately for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	$	451	$	—	$	4	$	1,832	$	51	$	1	$	2,283	$	51	$	5
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	92		—		—		1,463		70		—		1,555		70		—
Total securities held to maturity	$	543	$	—	$	4	$	3,295	$	121	$	1	$	3,838	$	121	$	5

	December 31, 2015
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government-sponsored agencies	$	196	$	—	$	4	$	—	$	—	$	—	$	196	$	—	$	4
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	3,297		—		39		1,705		53		2		5,002		53		41
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	197		—		1		1,428		73		4		1,625		73		5
Total securities held to maturity	$	3,690	$	—	$	44	$	3,133	$	126	$	6	$	6,823	$	126	$	50

The carrying amount and fair value of securities held to maturity by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
	Over One Year Through Five Years				Over Five Years Through Ten Years				Over Ten Years				Total
(Dollars in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
U.S. Treasury	$	490	$	502	$	—	$	—	$	—	$	—	$	490	$	502
U.S. government-sponsored agencies	—		—		200		200		—		—		200		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	—		—		92		94		8,162		8,309		8,254		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	49		51		801		863		811		829		1,661		1,743
Total securities held to maturity	$	539	$	553	$	1,093	$	1,157	$	8,973	$	9,138	$	10,605	$	10,848

Securities Pledged as Collateral

At March 31, 2016, the Company had $0.9 billion of securities available for sale pledged as collateral to secure public and trust department deposits, where the secured party cannot resell or repledge such securities. At March 31, 2016 and December 31, 2015, the Company accepted securities as collateral for reverse repurchase agreements that it is permitted by contract to sell or repledge of $28 million and $24 million, respectively, none of which has been sold or repledged. These securities received as collateral are not recognized on the Company's balance sheet. For further information related to the Company's significant accounting policies on securities pledged as collateral, see Note 1 to the Consolidated Financial Statements in Part II, Item 8. "Financial Statements and Supplementary Data" in our 2015 Form 10-K.

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Loans and Allowance for Loan Losses

3 Months Ended

Mar. 31, 2016

Receivables [Abstract]

Loans and Allowance for Loan Losses

Loans and Allowance for Loan Losses

The following table provides the outstanding balances of loans at March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016			December 31, 2015
Loans held for investment:
Commercial and industrial	$	30,212		$	29,730
Commercial mortgage	14,920			13,904
Construction	2,251			2,297
Lease financing	732			737
Total commercial portfolio	48,115			46,668
Residential mortgage	27,495			27,344
Home equity and other consumer loans	3,385			3,251
Total consumer portfolio	30,880			30,595
Total loans held for investment, before purchased credit-impaired loans	78,995			77,263
Purchased credit-impaired loans(1)	304			336
Total loans held for investment(2)	79,299			77,599
Allowance for loan losses	(879		)	(721		)
Loans held for investment, net	$	78,420		$	76,878

(1) Includes $16 million and $19 million as of March 31, 2016 and December 31, 2015, respectively, of loans for which the Company will be reimbursed a portion of any future losses under the terms of the FDIC loss share agreements.

(2) Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

Allowance for Loan Losses

The following tables provide a reconciliation of changes in the allowance for loan losses by portfolio segment:

	For the Three Months Ended March 31, 2016
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired			Unallocated			Total
Allowance for loan losses, beginning of period	$	651		$	49		$	1		$	20		$	721
(Reversal of) provision for loan losses	171			8			(1		)	(20		)	158
Other	4			—			—			—			4
Loans charged-off	(8		)	(1		)	—			—			(9		)
Recoveries of loans previously charged-off	4			1			—			—			5
Allowance for loan losses, end of period	$	822		$	57		$	—		$	—		$	879

	For the Three Months Ended March 31, 2015
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses, beginning of period	$	465		$	49		$	3	$	20	$	537
(Reversal of) provision for loan losses	(5		)	2			—		—		(3		)
Other	(1		)	—			—		—		(1		)
Loans charged-off	(4		)	(3		)	—		—		(7		)
Recoveries of loans previously charged-off	4			—			—		—		4
Allowance for loan losses, end of period	$	459		$	48		$	3	$	20	$	530

The following tables show the allowance for loan losses and related loan balances by portfolio segment as of March 31, 2016 and December 31, 2015:

	March 31, 2016
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	265	$	13	$	—	$	—	$	278
Collectively evaluated for impairment	557		44		—		—		601
Total allowance for loan losses	$	822	$	57	$	—	$	—	$	879
Loans held for investment:
Individually evaluated for impairment	$	752	$	301	$	1	$	—	$	1,054
Collectively evaluated for impairment	47,363		30,579		—		—		77,942
Purchased credit-impaired loans	—		—		303		—		303
Total loans held for investment	$	48,115	$	30,880	$	304	$	—	$	79,299

	December 31, 2015
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	101	$	13	$	—	$	—	$	114
Collectively evaluated for impairment	550		36		—		20		606
Purchased credit-impaired loans	—		—		1		—		1
Total allowance for loan losses	$	651	$	49	$	1	$	20	$	721
Loans held for investment:
Individually evaluated for impairment	$	525	$	307	$	1	$	—	$	833
Collectively evaluated for impairment	46,143		30,288		—		—		76,431
Purchased credit-impaired loans	—		—		335		—		335
Total loans held for investment	$	46,668	$	30,595	$	336	$	—	$	77,599

Nonaccrual and Past Due Loans

The following table presents nonaccrual loans as of March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	702	$	284
Commercial mortgage	30		37
Total commercial portfolio	732		321
Residential mortgage	186		190
Home equity and other consumer loans	32		35
Total consumer portfolio	218		225
Total nonaccrual loans, before purchased credit-impaired loans	950		546
Purchased credit-impaired loans	6		6
Total nonaccrual loans	$	956	$	552
Troubled debt restructured loans that continue to accrue interest	$	229	$	413
Troubled debt restructured nonaccrual loans (included in the total nonaccrual loans above)	$	598	$	409

The following tables show an aging of the balance of loans held for investment, excluding purchased credit-impaired loans, by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,869	$	64	$	11	$	75	$	30,944
Commercial mortgage	14,886		26		8		34		14,920
Construction	2,251		—		—		—		2,251
Total commercial portfolio	48,006		90		19		109		48,115
Residential mortgage	27,357		90		48		138		27,495
Home equity and other consumer loans	3,363		13		9		22		3,385
Total consumer portfolio	30,720		103		57		160		30,880
Total loans held for investment, excluding purchased credit-impaired loans	$	78,726	$	193	$	76	$	269	$	78,995

	December 31, 2015
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,446	$	15	$	6	$	21	$	30,467
Commercial mortgage	13,880		17		7		24		13,904
Construction	2,292		5		—		5		2,297
Total commercial portfolio	46,618		37		13		50		46,668
Residential mortgage	27,206		92		46		138		27,344
Home equity and other consumer loans	3,225		14		12		26		3,251
Total consumer portfolio	30,431		106		58		164		30,595
Total loans held for investment, excluding purchased credit-impaired loans	$	77,049	$	143	$	71	$	214	$	77,263

Loans 90 days or more past due and still accruing totaled $6 million and $2 million at March 31, 2016 and December 31, 2015, respectively. Purchased credit-impaired loans that were 90 days or more past due and still accruing totaled $28 million and $16 million at March 31, 2016 and December 31, 2015, respectively.

Credit Quality Indicators

Management analyzes the Company’s loan portfolios by applying specific monitoring policies and procedures that vary according to the relative risk profile and other characteristics within the various loan portfolios. For further information related to the credit quality indicators the Company uses to monitor the portfolio, see Note 3 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

The following tables summarize the loans in the commercial portfolio segment and commercial loans outstanding within the purchased credit-impaired loans segment monitored for credit quality based on internal ratings. The amounts presented reflect unpaid principal balances less charge-offs.

	March 31, 2016
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,143	$	852	$	1,843	$	30,838
Commercial mortgage	14,472		141		171		14,784
Construction	2,193		59		—		2,252
Total commercial portfolio	44,808		1,052		2,014		47,874
Purchased credit-impaired loans	33		8		57		98
Total	$	44,841	$	1,060	$	2,071	$	47,972

	December 31, 2015
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,228	$	844	$	1,265	$	30,337
Commercial mortgage	13,470		139		149		13,758
Construction	2,240		57		—		2,297
Total commercial portfolio	43,938		1,040		1,414		46,392
Purchased credit-impaired loans	40		12		61		113
Total	$	43,978	$	1,052	$	1,475	$	46,505

At March 31, 2016 and December 31, 2015, the commercial portfolio included $1.7 billion and $1.2 billion, respectively, in criticized loans within the oil and gas industry sector of the portfolio. Criticized loans include both special mention and classified loans.

The Company monitors the credit quality of its consumer portfolio segment and consumer loans within the purchased credit-impaired loans segment based primarily on payment status. The following tables summarize the loans in the consumer portfolio segment and purchased credit-impaired loans segment, which excludes $15 million and $18 million of loans covered by FDIC loss share agreements, at March 31, 2016 and December 31, 2015, respectively:

	March 31, 2016
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,309	$	186	$	27,495
Home equity and other consumer loans	3,353		32		3,385
Total consumer portfolio	30,662		218		30,880
Purchased credit-impaired loans	139		—		139
Total	$	30,801	$	218	$	31,019

	December 31, 2015
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,154	$	190	$	27,344
Home equity and other consumer loans	3,216		35		3,251
Total consumer portfolio	30,370		225		30,595
Purchased credit-impaired loans	148		—		148
Total	$	30,518	$	225	$	30,743

The Company also monitors the credit quality for substantially all of its consumer portfolio segment using credit scores provided by FICO and refreshed LTV ratios. FICO credit scores are refreshed at least quarterly to monitor the quality of the portfolio. Refreshed LTV measures the principal balance of the loan as a percentage of the estimated current value of the property securing the loan. Home equity loans are evaluated using combined LTV, which measures the principal balance of the combined loans that have liens against the property (including unused credit lines for home equity products) as a percentage of the estimated current value of the property securing the loans. The LTV ratios are refreshed on a quarterly basis, using the most recent home pricing index data available for the property location. 

The following tables summarize the loans in the consumer portfolio segment and consumer loans within the purchased credit-impaired loans segment monitored for credit quality based on refreshed FICO scores and refreshed LTV ratios at March 31, 2016 and December 31, 2015. These tables exclude loans covered by FDIC loss share agreements, as discussed above. The amounts presented reflect unpaid principal balances less partial charge-offs.

	March 31, 2016
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,311		$	5,482		$	467		$	27,260
Home equity and other consumer loans	2,345			896			83			3,324
Total consumer portfolio	23,656			6,378			550			30,584
Purchased credit-impaired loans	57			71			11			139
Total	$	23,713		$	6,449		$	561		$	30,723
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

	December 31, 2015
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,209		$	5,412		$	488		$	27,109
Home equity and other consumer loans	2,276			818			85			3,179
Total consumer portfolio	23,485			6,230			573			30,288
Purchased credit-impaired loans	60			76			12			148
Total	$	23,545		$	6,306		$	585		$	30,436
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

	March 31, 2016
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,396		$	764		$	48		$	52		$	27,260
Home equity loans	2,117			210			79			100			2,506
Total consumer portfolio	28,513			974			127			152			29,766
Purchased credit-impaired loans	101			27			9			1			138
Total	$	28,614		$	1,001		$	136		$	153		$	29,904
Percentage of total	96		%	3		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

	December 31, 2015
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,143		$	804		$	52		$	110		$	27,109
Home equity loans	2,190			217			83			55			2,545
Total consumer portfolio	28,333			1,021			135			165			29,654
Purchased credit-impaired loans	106			32			9			—			147
Total	$	28,439		$	1,053		$	144		$	165		$	29,801
Percentage of total	95		%	4		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

Troubled Debt Restructurings

The following table provides a summary of the Company’s recorded investment in TDRs as of March 31, 2016 and December 31, 2015. The summary includes those TDRs that are on nonaccrual status and those that continue to accrue interest. The Company had $29 million and $98 million in commitments to lend additional funds to borrowers with loan modifications classified as TDRs as of March 31, 2016 and December 31, 2015, respectively.

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	509	$	499
Commercial mortgage	17		16
Total commercial portfolio	526		515
Residential mortgage	270		276
Home equity and other consumer loans	31		31
Total consumer portfolio	301		307
Total restructured loans, excluding purchased credit-impaired loans	$	827	$	822

For the first quarter of 2016, TDR modifications in the commercial portfolio segment were primarily composed of interest rate changes, maturity extensions, covenant waivers, conversions from revolving lines of credit to term loans, or some combination thereof. In the consumer portfolio segment, primarily all of the modifications were composed of interest rate reductions and maturity extensions. Charge-offs related to TDR modifications for the three months ended March 31, 2016 and March 31, 2015 were de minimis. For the commercial and consumer portfolio segments, the allowance for loan losses for TDRs is measured on an individual loan basis or in pools with similar risk characteristics.

The following table provides the pre- and post-modification outstanding recorded investment amounts of TDRs as of the date of the restructuring that occurred during the three months ended March 31, 2016 and 2015:

	For the Three Months Ended March 31, 2016				For the Three Months Ended March 31, 2015
(Dollars in millions)	Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)		Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)
Commercial and industrial	$	50	$	50	$	72	$	72
Commercial mortgage	5		5		2		2
Total commercial portfolio	55		55		74		74
Residential mortgage	4		4		4		4
Home equity and other consumer loans	1		1		1		1
Total consumer portfolio	5		5		5		5
Total	$	60	$	60	$	79	$	79

(1) Represents the recorded investment in the loan immediately prior to the restructuring event.

(2) Represents the recorded investment in the loan immediately following the restructuring event. It includes the effect of paydowns that were required as part of the restructuring terms.

The following table provides the recorded investment amounts of TDRs at the date of default, for which there was a payment default during the three months ended March 31, 2016 and 2015, and where the default occurred within the first twelve months after modification into a TDR. A payment default is defined as the loan being 60 days or more past due.

(Dollars in millions)	For the Three Months Ended March 31, 2016		For the Three Months Ended March 31, 2015
Commercial and industrial	$	1	$	4
Commercial mortgage	—		1
Total commercial portfolio	1		5
Residential mortgage	2		—
Total consumer portfolio	2		—
Total	$	3	$	5

For loans in the consumer portfolio in which impairment is measured using the present value of expected future cash flows discounted at the loan’s effective interest rate, historical payment defaults and the propensity to redefault are some of the factors considered when determining the allowance for loan losses.

Loan Impairment

Loans that are individually evaluated for impairment include larger nonaccruing loans within the commercial and industrial, construction, and commercial mortgage loan portfolios and loans modified in a TDR. The Company records an impairment allowance when the value of an impaired loan is less than the recorded investment in the loan.

The following tables show information about impaired loans by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	704	$	32	$	736	$	264	$	732	$	34
Commercial mortgage	14		2		16		1		14		2
Total commercial portfolio	718		34		752		265		746		36
Residential mortgage	179		91		270		12		194		107
Home equity and other consumer loans	9		22		31		1		10		33
Total consumer portfolio	188		113		301		13		204		140
Total, excluding purchased credit-impaired loans	906		147		1,053		278		950		176
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	907	$	147	$	1,054	$	278	$	951	$	176

	December 31, 2015
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	363	$	142	$	505	$	100	$	377	$	144
Commercial mortgage	14		6		20		1		15		9
Total commercial portfolio	377		148		525		101		392		153
Residential mortgage	183		93		276		13		199		109
Home equity and other consumer loans	9		22		31		—		10		35
Total consumer portfolio	192		115		307		13		209		144
Total, excluding purchased credit-impaired loans	569		263		832		114		601		297
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	570	$	263	$	833	$	114	$	602	$	297

The following table presents the average recorded investment in impaired loans and the amount of interest income recognized for impaired loans during the three months ended March 31, 2016 and 2015 for the commercial, consumer and purchased credit-impaired loans portfolio segments.

	For the Three Months Ended March 31,
	2016				2015
(Dollars in millions)	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
Commercial and industrial	$	623	$	2	$	149	$	2
Commercial mortgage	18		—		35		—
Construction	—		—		—		—
Total commercial portfolio	641		2		184		2
Residential mortgage	273		2		306		3
Home equity and other consumer loans	31		1		30		1
Total consumer portfolio	304		3		336		4
Total, excluding purchased credit-impaired loans	945		5		520		6
Purchased credit-impaired loans	1		—		1		—
Total	$	946	$	5	$	521	$	6

The Company transferred a net $81 million of commercial loans from loans held for sale to held for investment during the three months endedMarch 31, 2016 and a net $80 million of commercial loans from held for investment to held for sale during the three months endedMarch 31, 2015. Proceeds from the sale of commercial loans were $34 million and $36 million during the three months endedMarch 31, 2016 and March 31, 2015, respectively. No consumer loans were sold or transferred from held for investment to held for sale during the three months endedMarch 31, 2016 or March 31, 2015.

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Variable Interest Entities

3 Months Ended

Mar. 31, 2016

Variable Interest Entities

Variable Interest Entities

Variable Interest Entities

In the normal course of business, the Company has certain financial interests in entities which have been determined to be VIEs. Generally, a VIE is a corporation, partnership, trust or other legal structure where the equity investors do not have substantive voting rights, an obligation to absorb the entity’s losses or the right to receive the entity’s returns, or the ability to direct the significant activities of the entity. The following discusses the Company’s consolidated and unconsolidated VIEs.

Consolidated VIEs

The following tables present the assets and liabilities of consolidated VIEs recorded on the Company’s consolidated balance sheets at March 31, 2016 and December 31, 2015:

	March 31, 2016
	Consolidated Assets								Consolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Loans Held for Investment, net		Other Assets		Total Assets		Other Liabilities		Total Liabilities
LIHC investments	$	8	$	—	$	170	$	178	$	—	$	—
Leasing investments	4		585		158		747		67		67
Total consolidated VIEs	$	12	$	585	$	328	$	925	$	67	$	67

	December 31, 2015
	Consolidated Assets								Consolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Loans Held for Investment, net		Other Assets		Total Assets			Other Liabilities		Total Liabilities
LIHC investments	$	9	$	—	$	178	$	187		$	—	$	—
Leasing investments	21		588		156		765			59		59
Total consolidated VIEs	$	30	$	588	$	334	$	952		$	59	$	59

LIHC Investments

The Company sponsors, manages and syndicates two LIHC investment fund structures. These investments are designed to generate a return primarily through the realization of U.S. federal tax credits and deductions. The Company is considered the primary beneficiary and has consolidated these investments because the Company has the power to direct activities that most significantly impact the funds’ economic performances and also has the obligation to absorb losses of the funds that could potentially be significant to the funds. Neither creditors nor equity investors in the LIHC investments have any recourse to the general credit of the Company, and the Company’s creditors do not have any recourse to the assets of the consolidated LIHC investments.

Leasing Investments

The Company has leasing investments primarily in the wind, rail and coal industries. The Company is considered the primary beneficiary and has consolidated these investments because the Company has the power to direct the activities of these entities that significantly impact the entities’ economic performances. The Company also has the right to receive potentially significant benefits or the obligation to absorb potentially significant losses of these investments.

Unconsolidated VIEs

The following tables present the Company’s carrying amounts related to the unconsolidated VIEs at March 31, 2016 and December 31, 2015. The tables also present the Company’s maximum exposure to loss resulting from its involvement with these VIEs. The maximum exposure to loss represents the carrying amount of the Company’s involvement plus any legally binding unfunded commitments in the unlikely event that all of the assets in the VIEs become worthless. During the three months endedMarch 31, 2016 and March 31, 2015, the Company had noncash increases in unfunded commitments on LIHC investments of $37 million and $32 million, respectively, included within other liabilities.

	March 31, 2016
	Unconsolidated Assets										Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	190	$	1,169	$	1,384	$	420	$	420	$	1,384
Leasing investments	5		—		20		1,194		1,219		61		61		1,240
Other investments	—		—		34		27		61		—		—		86
Total unconsolidated VIEs	$	5	$	25	$	244	$	2,390	$	2,664	$	481	$	481	$	2,710

			December 31, 2015
			Unconsolidated Assets								Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	220	$	1,166	$	1,411	$	424	$	424	$	1,411
Leasing investments	5		—		20		1,200		1,225		61		61		1,245
Other investments	—		—		49		10		59		—		—		60
Total unconsolidated VIEs	$	5	$	25	$	289	$	2,376	$	2,695	$	485	$	485	$	2,716

LIHC Investments

The Company makes investments in partnerships and funds formed by third parties. The primary purpose of the partnerships and funds is to invest in low-income housing units and distribute tax credits and tax benefits associated with the underlying properties to investors. The Company is a limited partner investor and is allocated tax credits and deductions, but has no voting or other rights to direct the activities of the funds or partnerships, and therefore is not considered the primary beneficiary and does not consolidate these investments.

The following table presents the impact of the unconsolidated LIHC investments on our consolidated statements of income for the three months endedMarch 31, 2016 and 2015:

	For the Three Months Ended
	March 31, 2016		March 31, 2015
(Dollars in millions)
Losses from LIHC investments included in other noninterest expense	$	2	$	2
Amortization of LIHC investments included in income tax expense	30		27
Tax credits and other tax benefits from LIHC investments included in income tax expense	45		46

Leasing Investments

The unconsolidated VIEs related to leasing investments are primarily renewable energy investments. Through its subsidiaries, the Company makes equity investments in LLCs established by third party sponsors. The LLCs are created to operate and manage wind, solar, hydroelectric and cogeneration power plant projects. Power generated by the projects is sold to third parties through long-term purchase power agreements. As a limited investor member, the Company is allocated production tax credits and taxable income or losses associated with the projects. The Company has no voting or other rights to direct the activities of the LLCs, and therefore is not considered the primary beneficiary and does not consolidate these investments.

Other Investments

The Company has other investments in structures formed by third parties. The Company has no voting or other rights to direct the activities of the investments that would most significantly impact the entities’ performance, and therefore is not considered the primary beneficiary and does not consolidate these investments.

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Commercial Paper and Other Short-Term Borrowings

3 Months Ended

Mar. 31, 2016

Short-term Debt [Abstract]

Commercial Paper and Other Short-Term Borrowings

Commercial Paper and Other Short-Term Borrowings

The following table is a summary of the Company's commercial paper and other short-term borrowings:

(Dollars in millions)	March 31, 2016		December 31, 2015
Federal funds purchased and securities sold under repurchase agreements, with weighted average interest rates of 0.34% and 0.30% at March 31, 2016 and December 31, 2015, respectively	$	14	$	44
Commercial paper, with a weighted average interest rate of 0.35% and 0.23% at March 31, 2016 and December 31, 2015, respectively	633		994
Total commercial paper and other short-term borrowings	$	647	$	1,038

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Long-Term Debt

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

Long-term debt consists of borrowings having an original maturity of one year or more. The following is a summary of the Company's long-term debt:

(Dollars in millions)	March 31, 2016		December 31, 2015
Debt issued by MUAH
Senior debt:
Floating rate senior notes due February 2018. These notes, which bear interest at 0.57% above 3-month LIBOR, had a rate of 1.19% at March 31, 2016 and 0.91% at December 31, 2015	$	249	$	250
Fixed rate 1.625% notes due February 2018	449		450
Fixed rate 2.25% notes due February 2020	996		1,000
Fixed rate 3.50% notes due June 2022	397		398
Fixed rate 3.00% notes due February 2025	495		498
Subordinated debt due to BTMU:
Floating rate subordinated debt due December 2023. This note, which bears interest at 1.38% above 3-month LIBOR, had a rate of 2.01% at March 31, 2016 and 1.98% at December 31, 2015	300		300
Junior subordinated debt payable to trusts(1):
Floating rate note due September 2036. This note had an interest rate of 2.33% at March 31, 2016 and 2.21% at December 31, 2015	36		36
Total debt issued by MUAH	2,922		2,932
Debt issued by MUB and other subsidiaries
Senior debt:
Fixed rate FHLB of San Francisco advances due February 2016. These notes bear a combined weighted-average rate of 2.50% at December 31, 2015	—		500
Fixed rate 3.00% notes due June 2016	700		700
Fixed rate 1.50% notes due September 2016	500		499
Floating rate notes due September 2016. These notes, which bear interest at 0.75% above 3-month LIBOR, had a rate of 1.38% at March 31, 2016 and 1.35% at December 31, 2015	500		500
Floating rate notes due May 2017. These notes, which bear interest at 0.40% above 3-month LIBOR, had a rate of 1.02% at March 31, 2016 and 0.73% at December 31, 2015	250		250
Fixed rate 2.125% notes due June 2017	499		499
Fixed rate 2.625% notes due September 2018	998		1,000
Fixed rate 2.250% notes due May 2019	509		502
Senior debt due to BTMU:
Floating rate debt due January 2018. This note, which bears interest at 0.85% above 1-month LIBOR, had a rate of 1.29% at March 31, 2016 and 1.09% at December 31, 2015	1,000		1,000
Floating rate debt due January 2018. This note, which bears interest at 0.87% above 1-month LIBOR, had a rate of 1.31% at March 31, 2016 and 1.11% at December 31, 2015	1,500		1,500
Floating rate debt due January 2018. This note, which bears interest at 1.03% above 1-month LIBOR, had a rate of 1.47% at March 31, 2016 and 1.27% at December 31, 2015	1,000		1,000
Subordinated debt:
Fixed rate 5.95% notes due May 2016	701		703
Subordinated debt due to BTMU:
Floating rate subordinated debt due June 2023. This note, which bears interest at 1.20% above 3-month LIBOR, had a rate of 1.83% at March 31, 2016 and 1.80% at December 31, 2015	750		750
Capital lease obligations with a combined weighted-average interest rate of 4.92% at March 31, 2016 and December 31, 2015(1)	14		14
Total debt issued by MUB and other subsidiaries	8,921		9,417
Total long-term debt	$	11,843	$	12,349

(1) Long-term debt assumed through acquisitions.

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Fair Value Measurement and Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurement and Fair Value of Financial Instruments

Fair Value Measurement and Fair Value of Financial Instruments

Valuation Methodologies

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price) in an orderly transaction between willing market participants at the measurement date. The Company has an established and documented process for determining fair value for financial assets and liabilities that are measured at fair value on either a recurring or nonrecurring basis. When available, quoted market prices are used to determine fair value. If quoted market prices are not available, fair value is based upon valuation techniques that use, where possible, current market-based or independently sourced parameters, such as yield curves, foreign exchange rates, credit spreads, commodity prices and implied volatilities. Valuation adjustments may be made to ensure the financial instruments are recorded at fair value. These adjustments include amounts that reflect counterparty credit quality and that consider the Company's own creditworthiness in determining the fair value of its trading assets and liabilities. For further information related to the valuation methodologies used for certain financial assets and financial liabilities measured at fair value, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Fair Value Hierarchy

In determining fair value, the Company maximizes the use of observable market inputs and minimizes the use of unobservable inputs. Observable inputs reflect market-derived or market-based information obtained from independent sources, while unobservable inputs reflect the Company’s estimate about market data. Based on the observability of the significant inputs used, the Company classifies its fair value measurements in accordance with the three-level hierarchy as defined by GAAP. This hierarchy is based on the quality, observability and reliability of the information used to determine fair value. For further information related to the fair value hierarchy, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Valuation Processes

The Company has established a valuation committee to oversee its valuation framework for measuring fair value and to establish valuation policies and procedures. The valuation committee’s responsibilities include reviewing fair value measurements and categorizations within the fair value hierarchy and monitoring the use of pricing sources, mark-to-model valuations, dealer quotes and other valuation processes. The valuation committee reports to the Company’s Disclosure & Accounting Committee and meets at least quarterly.

Independent price verification is performed periodically by the Company to test the market data and valuations of substantially all instruments measured at fair value on a recurring basis. As part of its independent price verification procedures, the Company compares pricing sources, tests data variances within certain thresholds and performs variance analysis, utilizing third party valuations and both internal and external models. Results are formally reported on a quarterly basis to the valuation committee. For further information related to valuation processes, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Fair Value Measurements on a Recurring Basis

The following tables present financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2016 and December 31, 2015, by major category and by valuation hierarchy level:

	March 31, 2016
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	36		$	—		$	—		$	36
U.S. government-sponsored agency securities	—			97			—			—			97
State and municipal securities	—			8			—			—			8
Interest rate derivative contracts	1			1,394			2			(254		)	1,143
Commodity derivative contracts	—			367			3			(351		)	19
Foreign exchange derivative contracts	1			111			1			(54		)	59
Equity derivative contracts	—			—			183			(175		)	8
Total trading account assets	2			2,013			189			(834		)	1,370
Securities available for sale:
U.S. Treasury	—			152			—			—			152
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			6,308			—			—			6,308
Privately issued	—			203			—			—			203
Privately issued - commercial mortgage-backed securities	—			1,492			—			—			1,492
Collateralized loan obligations	—			3,227			—			—			3,227
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,581			—			1,581
Other	—			1			32			—			33
Equity securities	8			—			—			—			8
Total securities available for sale	8			11,390			1,613			—			13,011
Other assets:
Mortgage servicing rights	—			—			13			—			13
Interest rate hedging contracts	—			271			—			(205		)	66
Other derivative contracts	—			3			2			(3		)	2
Total other assets	—			274			15			(208		)	81
Total assets	$	10		$	13,677		$	1,817		$	(1,042	)	$	14,462
Percentage of total	—		%	94		%	13		%	(7		)%	100		%
Percentage of total Company assets	—		%	11		%	2		%	(1		)%	12		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	3		$	1,344		$	—		$	(1,150	)	$	197
Commodity derivative contracts	—			330			3			(78		)	255
Foreign exchange derivative contracts	—			130			1			(38		)	93
Equity derivative contracts	—			—			183			—			183
Securities sold, not yet purchased	—			19			—			—			19
Total trading account liabilities	3			1,823			187			(1,266		)	747
Other liabilities:
FDIC clawback liability	—			—			115			—			115
Other derivative contracts	—			1			1			—			2
Total other liabilities	—			1			116			—			117
Total liabilities	$	3		$	1,824		$	303		$	(1,266	)	$	864
Percentage of total	—		%	211		%	35		%	(146		)%	100		%
Percentage of total Company liabilities	—		%	2		%	—		%	(1		)%	1		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

	December 31, 2015
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	37		$	—		$	—		$	37
U.S. government-sponsored agency securities	—			106			—			—			106
State and municipal securities	—			3			—			—			3
Commercial Paper	—			25			—			—			25
Interest rate derivative contracts	—			998			4			(163		)	839
Commodity derivative contracts	—			408			1			(384		)	25
Foreign exchange derivative contracts	1			115			1			(70		)	47
Equity derivative contracts	—			—			222			(217		)	5
Total trading account assets	1			1,692			228			(834		)	1,087
Securities available for sale:
U.S. Treasury	—			594			—			—			594
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			7,201			—			—			7,201
Privately issued	—			151			—			—			151
Privately issued - commercial mortgage-backed securities	—			1,546			—			—			1,546
Collateralized loan obligations	—			3,233			—			—			3,233
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,572			—			1,572
Other	—			1			31			—			32
Equity securities	8			—			—			—			8
Total securities available for sale	8			12,733			1,603			—			14,344
Other assets:
Interest rate hedging contracts	—			73			—			(71		)	2
Other derivative contracts	—			4			1			(4		)	1
Total other assets	—			77			1			(75		)	3
Total assets	$	9		$	14,502		$	1,832		$	(909	)	$	15,434
Percentage of total	—		%	94		%	12		%	(6		)%	100		%
Percentage of total Company assets	—		%	12		%	2		%	(1		)%	13		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	1		$	947		$	—		$	(775	)	$	173
Commodity derivative contracts	—			368			1			(61		)	308
Foreign exchange derivative contracts	1			91			1			(22		)	71
Equity derivative contracts	—			—			221			—			221
Securities sold, not yet purchased	—			23			—			—			23
Total trading account liabilities	2			1,429			223			(858		)	796
Other liabilities:
FDIC clawback liability	—			—			112			—			112
Interest rate hedging contracts	—			14			—			(14		)	—
Other derivative contracts	—			—			2			—			2
Total other liabilities	—			14			114			(14		)	114
Total liabilities	$	2		$	1,443		$	337		$	(872	)	$	910
Percentage of total	—		%	159		%	37		%	(96		)%	100		%
Percentage of total Company liabilities	—		%	1		%	—		%	(1		)%	—		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

The following tables present a reconciliation of the assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2016 and 2015. Level 3 available for sale securities at March 31, 2016 and 2015 primarily consist of direct bank purchase bonds. The Company’s policy is to recognize transfers in and out of Level 1, 2 and 3 as of the end of a reporting period.

	For the Three Months Ended
	March 31, 2016														March 31, 2015
(Dollars in millions)	Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities			Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities
Asset (liability) balance, beginning of period	$	228		$	1,603		$	1	$	(223	)	$	(114	)	$	311		$	1,790		$	2	$	(305	)	$	(107	)
Total gains (losses) (realized/unrealized):
Included in income before taxes	(18		)	—			1		17			(2		)	8			—			1		(10		)	(2		)
Included in other comprehensive income	—			(2		)	—		—			—			—			(3		)	—		—			—
Purchases/additions	—			78			—		—			—			—			9			—		—			—
Settlements	(21		)	(66		)	—		19			—			(13		)	(102		)	—		14			—
Transfers in (out) of level 3	—			—			13		—			—			—			—			—		—			—
Asset (liability) balance, end of period	$	189		$	1,613		$	15	$	(187	)	$	(116	)	$	306		$	1,694		$	3	$	(301	)	$	(109	)
Changes in unrealized gains (losses) included in income before taxes for assets and liabilities still held at end of period	$	(18	)	$	—		$	1	$	17		$	(2	)	$	8		$	—		$	1	$	(10	)	$	(2	)

The following table presents information about significant unobservable inputs related to the Company’s significant Level 3 assets and liabilities at March 31, 2016.

	March 31, 2016
(Dollars in millions)	Level 3 Fair Value		Valuation Technique	Significant Unobservable Input(s)	Range of Inputs		Weighted Average
Securities available for sale:
Direct bank purchase bonds	$	1,581	Return on equity	Market-required return on capital	8.0 - 10.0	%	9.8	%
				Probability of default	0.0 - 25.0	%	0.4	%
				Loss severity	10.0 - 60.0	%	29.2	%
Other liabilities:
FDIC clawback liability	$	115	Discounted cash flow	Probability of default	0.2 - 100.0	%	56.6	%
				Loss severity	0.0 - 100.0	%	30.8	%

The direct bank purchase bonds use a return on equity valuation technique. This technique uses significant unobservable inputs such as market-required return on capital, probability of default and loss severity. Increases (decreases) in any of these inputs in isolation would result in a lower (higher) fair value measurement.

The FDIC clawback liability uses a discounted cash flow valuation technique. This technique uses significant unobservable inputs such as probability of default and loss severity. Increases (decreases) in probability of default and loss severity would result in a lower (higher) liability.

Fair Value Measurement on a Nonrecurring Basis

Certain assets may be measured at fair value on a nonrecurring basis. These assets are subject to fair value adjustments that result from the application of the lower of cost or fair value accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis during the three months ended March 31, 2016 and 2015 that were still held on the consolidated balance sheet as of the respective periods ended, the following tables present the fair value of such assets by the level of valuation assumptions used to determine each fair value adjustment.

	March 31, 2016								Gain (Loss) For the Three Months Ended March 31, 2016
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Loans held for sale	$	5	$	—	$	—	$	5	$	(3	)
Impaired loans	375		—		—		375		(127		)
Premises and equipment	—		—		—		—		(4		)
Other assets:
OREO	2		—		—		2		(1		)
Private equity investments	10		—		—		10		(12		)
Intangible assets	—		—		—		—		(1		)
Total	$	392	$	—	$	—	$	392	$	(148	)

	March 31, 2015								Gain (Loss) For the Three Months Ended March 31, 2015
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Impaired loans	$	46	$	—	$	—	$	46	$	(6	)
Other assets:
OREO	9		—		—		9		—
Private equity investments	7		—		—		7		(5		)
Total	$	62	$	—	$	—	$	62	$	(11	)

Loans include individually impaired loans that are measured based on the fair value of the underlying collateral or the fair value of the loan. The fair value of impaired loans was determined based on appraised values of the underlying collateral or market pricing for the loan, adjusted for management judgment, as of the measurement date. The fair value of OREO was primarily based on independent appraisals. The fair value of private equity investments was determined using a discounted cash flow analysis and market pricing, adjusted for management judgment, as of the measurement date. The fair value of premises and equipment and intangible assets was determined using appraised value and market pricing, adjusted for management judgment, as of the measurement date.

Fair Value of Financial Instruments Disclosures

The tables below present the carrying amount and estimated fair value of certain financial instruments, classified by valuation hierarchy level as of March 31, 2016 and as of December 31, 2015:

	March 31, 2016
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	8,324	$	8,324	$	8,324	$	—	$	—
Securities held to maturity	10,605		10,848		—		10,848		—
Loans held for investment (1)	77,697		79,411		—		—		79,411
Liabilities
Deposits	$	89,500	$	89,548	$	—	$	89,548	$	—
Commercial paper and other short-term borrowings	647		647		—		647		—
Long-term debt	11,843		11,900		—		11,900		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	241	$	241	$	—	$	—	$	241

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

	December 31, 2015
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	4,529	$	4,529	$	4,529	$	—	$	—
Securities held to maturity	10,158		10,207		—		10,207		—
Loans held for investment (1)	76,150		77,640		—		—		77,640
Other assets	16		17		—		—		17
Liabilities
Deposits	$	84,340	$	84,375	$	—	$	84,375	$	—
Commercial paper and other short-term borrowings	1,038		1,038		—		1,038		—
Long-term debt	12,349		12,351		—		12,351		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	243	$	243	$	—	$	—	$	243

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

For further information on methodologies for approximating fair values, see Note 10 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

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Derivative Instruments and Other Financial Instruments Used For Hedging

3 Months Ended

Mar. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Other Financial Instruments Used For Hedging

Derivative Instruments and Other Financial Instruments Used For Hedging

The Company enters into certain derivative and other financial instruments primarily to assist customers with their risk management objectives and to manage the Company’s exposure to interest rate risk. When entering into derivatives on behalf of customers the Company generally acts as a financial intermediary by offsetting a significant portion of the market risk for these derivatives with third parties. The Company may also enter into derivatives for other risk management purposes. All derivative instruments are recognized as assets or liabilities on the consolidated balance sheets at fair value.

Counterparty credit risk is inherent in derivative instruments. In order to reduce its exposure to counterparty credit risk, the Company utilizes credit approvals, limits, monitoring procedures and master netting and credit support annex agreements. Additionally, the Company considers counterparty credit quality and the creditworthiness of the Company in estimating the fair value of derivative instruments.

The table below presents the notional amounts and fair value amounts of the Company's derivative instruments reported on the consolidated balance sheets, segregated between derivative instruments designated and qualifying as hedging instruments and derivative instruments not designated as hedging instruments as of March 31, 2016 and December 31, 2015, respectively. Asset and liability values are presented gross, excluding the impact of legally enforceable master netting and credit support annex agreements. The fair value of asset and liability derivatives designated and qualifying as hedging instruments and derivatives designated as other risk management are included in other assets and other liabilities, respectively. The fair value of asset and liability trading derivatives are included in trading account assets and trading account liabilities, respectively.

	March 31, 2016						December 31, 2015
			Fair Value						Fair Value
	Notional		Asset		Liability		Notional		Asset		Liability
(Dollars in millions)	Amount		Derivatives		Derivatives		Amount		Derivatives		Derivatives
Cash flow hedges
Interest rate contracts	$	14,300	$	259	$	—	$	15,250	$	68	$	14
Fair value hedges
Interest rate contracts	500		12		—		500		5		—
Not designated as hedging instruments:
Trading
Interest rate contracts	100,017		1,397		1,347		100,932		1,002		948
Commodity contracts	3,410		370		333		3,775		409		369
Foreign exchange contracts	7,060		113		131		5,541		117		93
Equity contracts	3,155		183		183		3,351		222		221
Total Trading	113,642		2,063		1,994		113,599		1,750		1,631
Other risk management	283		5		2		251		5		2
Total derivative instruments	$	128,725	$	2,339	$	1,996	$	129,600	$	1,828	$	1,647

We recognized net losses and net gains of $1 million and $1 million on other risk management derivatives for the three months ended March 31, 2016 and 2015, respectively, which are included in other noninterest income.

Derivatives Designated and Qualifying as Hedging Instruments

The Company uses interest rate derivatives to manage the financial impact on the Company from changes in market interest rates. These instruments are used to manage interest rate risk relating to specified groups of assets and liabilities, primarily LIBOR-based commercial loans and debt issuances. Derivatives that qualify for hedge accounting are designated as either fair value or cash flow hedges. For further information related to the Company’s hedging strategy, see Note 11 to the Consolidated Financial Statements in Part II, Item 8. “Financial Statements and Supplementary Data” in our 2015 Form 10-K.

Cash Flow Hedges

The Company used interest rate swaps with a notional amount of $14.3 billion at March 31, 2016 to hedge the risk of changes in cash flows attributable to changes in the designated benchmark interest rate on LIBOR indexed loans. To the extent effective, payments received (or paid) under the swap contract offset fluctuations in interest income on loans caused by changes in the relevant LIBOR index. At March 31, 2016, the weighted average remaining life of the active cash flow hedges was 3.42 years.

For cash flow hedges, the effective portion of the gain or loss on the hedging instruments is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged cash flows are recognized in net interest income. Gains and losses representing hedge ineffectiveness are recognized in noninterest expense in the period in which they arise. At March 31, 2016, the Company expects to reclassify approximately $140 million of income from AOCI to net interest income during the twelve months ending March 31, 2017. This amount could differ from amounts actually realized due to changes in interest rates, hedge terminations and the addition of other hedges subsequent to March 31, 2016.

The following tables present the amount and location of the net gains and losses recorded in the Company’s consolidated statements of income and changes in stockholder’s equity for derivatives designated as cash flow hedges for the three months ended March 31, 2016 and 2015:

	Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)					Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Gain (Loss) Recognized in Income on Derivative Instruments (Ineffective Portion)
	For the Three Months Ended March 31,					For the Three Months Ended March 31,					For the Three Months Ended March 31,
(Dollars in millions)	2016		2015		Location	2016		2015		Location	2016		2015
Derivatives in cash flow hedging relationships
					Interest income	$	43	$	32
Interest rate contracts	$	266	$	119	Interest expense	—		1		Noninterest expense	$	1	$	1
Total	$	266	$	119		$	43	$	33		$	1	$	1

Fair Value Hedges

The Company engages in an interest rate hedging strategy in which one or more interest rate swaps are associated with a specified interest bearing liability, in order to convert the liability from a fixed rate to a floating rate instrument. This strategy mitigates the changes in fair value of the hedged liability caused by changes in the designated benchmark interest rate, U.S. dollar LIBOR.

For fair value hedges, any ineffectiveness is recognized in noninterest expense in the period in which it arises. The change in the fair value of the hedged item and the hedging instrument, to the extent completely effective, offsets with no impact on earnings.

The following table presents the gains (losses) on the Company's fair value hedges and hedged item for the three months ended March 31, 2016 and 2015, respectively:

		For the Three Months Ended March 31, 2016
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	7	$	(7	)	$	—
	Total	$	7	$	(7	)	$	—

		For the Three Months Ended March 31, 2015
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	5	$	(4	)	$	1
	Total	$	5	$	(4	)	$	1

Derivatives Not Designated as Hedging Instruments

Trading Derivatives

Derivative instruments classified as trading are primarily derivatives entered into as an accommodation for customers. Trading derivatives are included in trading assets or trading liabilities with changes in fair value reflected in income from trading account activities. The majority of the Company's derivative transactions for customers were essentially offset by contracts with third parties that reduce or eliminate market risk exposures.

The Company offers market-linked CDs, which allow the customer to earn the higher of either a minimum fixed rate of interest or a return tied to either equity, commodity, or currency indices. The Company offsets its exposure to the embedded derivative contained in market-linked CDs with a matched over-the-counter option. Both the embedded derivative (when bifurcated) and hedge options are recorded at fair value with the realized and unrealized changes in fair value recorded in noninterest income within trading account activities.

The following table presents the amount of the net gains and losses for derivative instruments classified as trading reported in the consolidated statements of income under the heading trading account activities for the three months ended March 31, 2016 and 2015:

	Gain or (Loss) Recognized in Income on Derivative Instruments
	For the Three Months Ended
(Dollars in millions)	March 31, 2016		March 31, 2015
Trading derivatives:
Interest rate contracts	$	2	$	(2	)
Foreign exchange contracts	9		6
Commodity contracts	—		1
Total	$	11	$	5

Offsetting Assets and Liabilities

The Company primarily enters into derivative contracts and repurchase agreements with counterparties utilizing a standard International Swaps and Derivatives Association Master Agreements and Master Repurchase Agreements, respectively. These agreements generally establish the terms and conditions of the transactions, including a legal right to set-off amounts payable and receivable between the Company and a counterparty, regardless of whether or not such amounts have matured or have contingency features.

The following tables present the offsetting of financial assets and liabilities as of March 31, 2016 and December 31, 2015:

	March 31, 2016
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	2,339	$	1,042	$	1,297	$	55	$	2	$	1,240
Securities purchased under resale agreements	29		—		29		28		—		1
Total	$	2,368	$	1,042	$	1,326	$	83	$	2	$	1,241
Financial Liabilities:
Derivative liabilities	$	1,996	$	1,266	$	730	$	229	$	1	$	500
Securities sold under repurchase agreements	2		—		2		2		—		—
Total	$	1,998	$	1,266	$	732	$	231	$	1	$	500

	December 31, 2015
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	1,828	$	909	$	919	$	60	$	—	$	859
Securities purchased under resale agreements	24		—		24		24		—		—
Total	$	1,852	$	909	$	943	$	84	$	—	$	859
Financial Liabilities:
Derivative liabilities	$	1,647	$	872	$	775	$	180	$	—	$	595
Securities sold under repurchase agreements	36		—		36		36		—		—
Total	$	1,683	$	872	$	811	$	216	$	—	$	595

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Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Income

The following tables present the change in each of the components of accumulated other comprehensive income and the related tax effect of the change allocated to each component for the three months ended March 31, 2016 and 2015:

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2016
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	266		$	(105	)	$	161
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(43		)	17			(26		)
Net change	223			(88		)	135
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	158			(62		)	96
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(13		)	5			(8		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	150			(59		)	91
Foreign currency translation adjustment	7			(3		)	4
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	3			(3		)
Recognized net actuarial (gain) loss(1)	22			(9		)	13
Net change(1)	16			(6		)	10
Other	(2		)	1			(1		)
Net change in AOCI	$	394		$	(155	)	$	239

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2015
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	119		$	(47	)	$	72
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(33		)	13			(20		)
Net change	86			(34		)	52
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	120			(47		)	73
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(3		)	1			(2		)
Accretion of fair value adjustment on securities available for sale	(2		)	1			(1		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	120			(47		)	73
Foreign currency translation adjustment	(12		)	5			(7		)
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	2			(4		)
Recognized net actuarial (gain) loss(1)	29			(11		)	18
Net change(1)	23			(9		)	14
Net change in AOCI	$	217		$	(85	)	$	132

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

The following table presents the change in accumulated other comprehensive income balances:

For the Three Months Ended March 31, 2015 and 2016:
	Net Unrealized Gains (Losses) on Cash Flow Hedges			Net Unrealized Gains (Losses) on Securities			Foreign Currency Translation Adjustment			Pension and Other Postretirement Benefits Adjustment			Other			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance, December 31, 2014	$	21		$	(145	)	$	(10	)	$	(595	)	$	—		$	(729	)
Other comprehensive income (loss) before reclassifications	72			75			(7		)	—			—			140
Amounts reclassified from AOCI	(20		)	(2		)	—			14			—			(8		)
Balance, March 31, 2015	$	73		$	(72	)	$	(17	)	$	(581	)	$	—		$	(597	)
Balance, December 31, 2015	$	36		$	(151	)	$	(25	)	$	(612	)	$	—		$	(752	)
Other comprehensive income (loss) before reclassifications	161			99			4			—			(1		)	263
Amounts reclassified from AOCI	(26		)	(8		)	—			10			—			(24		)
Balance, March 31, 2016	$	171		$	(60	)	$	(21	)	$	(602	)	$	(1	)	$	(513	)

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Employee Pension and Other Postretirement Benefits

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Employee Pension and Other Postretirement Benefits

Employee Pension and Other Postretirement Benefits

The following table summarizes the components of net periodic benefit cost for the three months ended March 31, 2016 and 2015.

	Pension Benefits						Other Postretirement Benefits						Superannuation, SERP and ESBP
	For the Three Months Ended   March 31,						For the Three Months Ended   March 31,						For the Three Months Ended   March 31,
(Dollars in millions)	2016			2015			2016			2015			2016		2015
Components of net periodic benefit cost:
Service cost	$	23		$	25		$	2		$	2		$	1	$	—
Interest cost	26			27			3			3			—		—
Expected return on plan assets	(60		)	(54		)	(5		)	(5		)	—		—
Amortization of prior service credit	(4		)	(4		)	(2		)	(2		)	—		—
Recognized net actuarial loss	19			27			2			1			1		1
Total net periodic benefit cost	$	4		$	21		$	—		$	(1	)	$	2	$	1

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Commitments, Contingencies and Guarantees

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments, Contingencies and Guarantees

Commitments, Contingencies and Guarantees

The following table summarizes the Company's commitments:

(Dollars in millions)	March 31, 2016
Commitments to extend credit	$	35,864
Issued standby and commercial letters of credit	$	5,796
Other commitments	$	115

Commitments to extend credit are legally binding agreements to lend to a customer provided there are no violations of any condition established in the contract. Commitments have fixed expiration dates or other termination clauses and may require maintenance of compensatory balances. Since many of the commitments to extend credit may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. Total commitments to extend credit at March 31, 2016 include $3.3 billion to commercial borrowers in the oil and gas sector.

Standby and commercial letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Standby letters of credit are generally contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party, while commercial letters of credit are issued specifically to facilitate foreign or domestic trade transactions. Additionally, the Company enters into risk participations in bankers' acceptances wherein a fee is received to guarantee a portion of the credit risk on an acceptance of another bank. The majority of these types of commitments have terms of 1 year or less. At March 31, 2016, the carrying amount of the Company's risk participations in bankers' acceptances and standby and commercial letters of credit totaled $4 million. Estimated exposure to loss related to these commitments is covered by the allowance for losses on unfunded commitments. The carrying amounts of the standby and commercial letters of credit and the allowance for losses on unfunded credit commitments are included in other liabilities on the consolidated balance sheet.

The credit risk involved in issuing loan commitments and standby and commercial letters of credit is essentially the same as that involved in extending loans to customers and is represented by the contractual amount of these instruments. Collateral may be obtained based on management's credit assessment of the customer.

Other commitments include commitments to fund principal investments and other securities.

Principal investments include direct investments in private and public companies. The Company issues commitments to provide equity and mezzanine capital financing to private and public companies through direct investments. The timing of future cash requirements to fund such commitments is generally dependent on the investment cycle. This cycle, the period over which privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, can vary based on overall market conditions as well as the nature and type of industry in which the companies operate.

The Company has rental commitments under long-term operating lease agreements. For detail of these commitments, see Note 4 to our Consolidated Financial Statements in our 2015 Form 10-K.

The Company occasionally enters into financial guarantee contracts where a premium is received from another financial institution counterparty to guarantee a portion of the credit risk on interest rate swap contracts entered into between the financial institution and its customer. The Company becomes liable to pay the financial institution only if the financial institution is unable to collect amounts owed to them by their customer. As of March 31, 2016, the current exposure to loss under these contracts totaled $41 million, and the maximum potential exposure to loss in the future was estimated at $65 million.

The Company is subject to various pending and threatened legal actions that arise in the normal course of business. The Company maintains liabilities for losses from legal actions that are recorded when they are determined to be both probable in their occurrence and can be reasonably estimated. Management believes the disposition of all claims currently pending, including potential losses from claims that may exceed the liabilities recorded, and claims for loss contingencies that are considered reasonably possible to occur, will not have a material effect, either individually or in the aggregate, on the Company's consolidated financial condition, results of operations or liquidity.

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Business Segments

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Business Segments

Business Segments

During the fourth quarter of 2015, the composition of the Company's reportable segments was revised to reflect the realignment of its business model in the Americas, which includes MUAH. The realignment consolidated the customer base of the Commercial Banking operating segment, including its products and services, into the activities performed within various other segments. We now have four reportable segments: Regional Bank, U.S. Wholesale Banking, Transaction Banking, and Investment Banking & Markets. Prior period segment results have been revised to conform to the current period presentation. Below is a detailed description of these reportable segments.

Regional Bank

The Regional Bank offers a range of banking products and services to individuals, including high net worth individuals and institutional clients, and businesses generally with up to $500 million in annual revenue, delivered generally through a network of branches, private banking offices, ATMs, broker mortgage referrals, relationship managers, telephone services, and web-based and mobile banking applications. These products and services include mortgages, home equity lines of credit, consumer and commercial loans, deposit accounts, financial planning and investments. The Regional Bank also provides a broad spectrum of commercial credit products including commercial loans, accounts receivable, inventory, and trade financing to corporate customers generally on the U.S. West Coast, and commercial real estate financing nationwide. The Regional Bank is comprised of five main divisions: Residential Lending, Retail Banking, Wealth Markets, Commercial Banking and Real Estate Industries.

The Residential Lending Division provides the centralized origination, underwriting, processing, servicing, collection and administration for consumer assets including residential mortgages.

The Retail Banking Division serves its customers through Private Banking, which provides comprehensive relationship management to clients with up to $3 million in deposits and investment balances at MUB; 330 full-service branches in California and 26 full-service branches in Washington and Oregon, as well as through ATMs, call centers, web-based and mobile internet banking applications and through alliances with other financial institutions. Retail Banking provides checking and deposit products and services; bill and loan payment, merchant, various types of financing and investment services; and products including credit cards.

The Wealth Markets Division serves its customers through Private Wealth Management, which provides comprehensive relationship management to clients with over $3 million in deposits and investment balances at MUB; UnionBanc Investment Services LLC, a subsidiary of MUB and a registered broker-dealer and investment advisor; and Asset Management which includes Highmark Capital Management, Inc., a subsidiary of MUB and a registered investment advisor.  Wealth Markets provides investment management and advisory services to institutional clients, wealth planning, deposits and risk management strategies, trust and estate administration, as well as investment sub-advisory services to unaffiliated funds. Products provided to its customers include traditional brokerage, managed accounts, annuities, mutual funds, fixed income products and insurance and customized lending.

The Commercial Banking Division provides a broad spectrum of commercial credit products including commercial loans, accounts receivable, inventory, and trade financing primarily to corporate customers with annual revenues up to $500 million based on the U.S. West Coast. Commercial Banking offers its customers a range of noncredit services and products, which include global treasury management and capital markets solutions, foreign exchange and various interest rate risk and commodity risk management products through cooperation with other segments.

The Real Estate Industries Division serves professional real estate investors and developers. Real Estate Industries, through its Community Development Finance unit, makes tax credit investments in affordable housing projects, as well as construction and permanent financing.

U.S. Wholesale Banking

U.S. Wholesale Banking provides commercial lending products, including commercial loans, lines of credit and project financing, to corporate customers with revenue greater than $500 million. The segment employs an industry-focused strategy including dedicated coverage teams in General Industries, Power and Utilities, Oil and Gas, Telecom and Media, Technology, Healthcare and Nonprofit, Public Finance, and Financial Institutions (predominantly Insurance and Asset Managers). By working with the Company's other segments, U.S. Wholesale Banking offers its customers a range of noncredit services, which include global treasury management, capital market solutions, and various foreign exchange, interest rate risk and commodity risk management products.

Transaction Banking

Transaction Banking works alongside the Company's other segments to provide working capital management and asset servicing solutions, including deposits and treasury management, trade finance, and institutional trust and custody, to the Company's customers. The client base consists of financial institutions, corporations, government agencies, insurance companies, mutual funds, investment managers and non-profit organizations.

Investment Banking & Markets

Investment Banking & Markets, which includes Global Capital Markets of the Americas, works with the Company's other segments to provide customers structured credit services, including project finance, leasing and equipment finance, commercial finance, funds finance and securitizations. Investment Banking & Markets also provides capital markets solutions, including syndicated loans, equity and debt underwriting, tax equity and merchant banking investments; risk management solutions, including foreign exchange, interest rate and energy risk management solutions; and facilitates merchant and investment banking-related transactions.

Other

"Other" includes the Asian Corporate Banking segment, Corporate Treasury and the impact of certain corporate activities. The Asian Corporate Banking segment offers a range of credit, deposit, and investment management products and services to companies located primarily in the U.S. that are affiliated with companies headquartered in Japan and other Asian countries. Corporate Treasury is responsible for ALM, wholesale funding and the ALM investment and derivatives hedging portfolios. These treasury management activities are carried out to manage the net interest rate and liquidity risks of the Company's balance sheet and to manage those risks within the guidelines established by ALCO. For additional discussion regarding these risk management activities, see Part I, Item 3. “Quantitative and Qualitative Disclosures About Market Risk” in this Form 10-Q.

Additionally, "Other" is comprised of certain corporate activities of the Company; the net impact of funds transfer pricing charges and credits allocated to the reportable segments; the residual costs of support groups; fees from affiliates and noninterest expenses associated with BTMU's U.S. branch banking operations; the unallocated allowance; goodwill, intangible assets, and the related amortization/accretion associated with the Company's privatization transaction; the elimination of the fully taxable-equivalent basis amount; the difference between the marginal tax rate and the consolidated effective tax rate; and the FDIC covered assets.

The information, set forth in the tables that follow, is prepared using various management accounting methodologies to measure the performance of the individual segments. Unlike GAAP there is no standardized or authoritative guidance for management accounting. Consequently, reported results are not necessarily comparable with those presented by other companies and they are not necessarily indicative of the results that would be reported by the business units if they were unique economic entities. The management reporting accounting methodologies, which are enhanced from time to time, measure segment profitability by assigning balance sheet and statements of income items to each operating segment. Methodologies that are applied to the measurement of segment profitability include a funds transfer pricing system, an activity-based costing methodology, other indirect costs and a methodology to allocate the provision for credit losses. The funds transfer pricing system assigns a cost of funds or a credit for funds to assets or liabilities based on their type, maturity or repricing characteristics between Corporate Treasury and the operating segments. A segment receives a funding credit from Corporate Treasury for its liabilities. Conversely, a segment is assigned a charge by Corporate Treasury to fund its assets. Certain indirect costs, such as operations and technology expense, are allocated to the segments based on an activity-based costing methodology. Other indirect costs, such as corporate overhead, are allocated to the segments based on internal surveys and metrics that serve as proxies for estimated usage. During the normal course of business, the Company occasionally changes or updates its management accounting methodologies or organizational structure. During the fourth quarter of 2015, the Company revised its management reporting accounting methodology to exclude the impact of the business integration initiative from the measurement of segment profitability. Fees from affiliates and noninterest expenses associated with BTMU's U.S. branch banking operations are now included within "Other". Prior period results have been adjusted to reflect these changes.

The Company generally applies a "market view" perspective in measuring the business segments. The market view is a measurement of customer markets aggregated to show all revenues generated and expenses incurred from all products and services sold to those customers regardless of where product areas organizationally report. Therefore, revenues and expenses are included in both the business segment that provides the service and the business segment that manages the customer relationship. The duplicative results from this internal management accounting view are eliminated in "Reconciling Items."

As of and for the Three Months Ended March 31, 2016:
(Dollars in millions)	Regional Bank			U.S. Wholesale Banking			Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	482		$	108		$	121	$	59		$	27		$	(100	)	$	697
Noninterest income (expense)	114			28			46		25			232			(50		)	395
Total revenue	596			136			167		84			259			(150		)	1,092
Noninterest expense	399			37			111		35			342			(48		)	876
(Reversal of) provision for credit losses	(2		)	126			2		31			5			—			162
Income (loss) before income taxes and including noncontrolling interests	199			(27		)	54		18			(88		)	(102		)	54
Income tax expense (benefit)	61			(11		)	21		(12		)	(2		)	(40		)	17
Net income (loss) including noncontrolling interests	138			(16		)	33		30			(86		)	(62		)	37
Deduct: net loss from noncontrolling interests	—			—			—		—			12			—			12
Net income (loss) attributable to MUAH	$	138		$	(16	)	$	33	$	30		$	(74	)	$	(62	)	$	49
Total assets, end of period	$	62,322		$	15,039		$	2,524	$	11,971		$	31,197		$	(2,144	)	$	120,909

As of and for the Three Months Ended March 31, 2015:
(Dollars in millions)	Regional Bank		U.S. Wholesale Banking		Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	479	$	100	$	115	$	60		$	20		$	(91	)	$	683
Noninterest income (expense)	111		32		43		31			166			(48		)	335
Total revenue	590		132		158		91			186			(139		)	1,018
Noninterest expense	425		43		100		30			296			(45		)	849
(Reversal of) provision for credit losses	6		2		1		(7		)	3			(2		)	3
Income (loss) before income taxes and including noncontrolling interests	159		87		57		68			(113		)	(92		)	166
Income tax expense (benefit)	45		34		22		13			(44		)	(36		)	34
Net income (loss) including noncontrolling interests	114		53		35		55			(69		)	(56		)	132
Deduct: net loss from noncontrolling interests	—		—		—		—			5			—			5
Net income (loss) attributable to MUAH	$	114	$	53	$	35	$	55		$	(64	)	$	(56	)	$	137
Total assets, end of period	$	62,224	$	13,263	$	1,624	$	11,149		$	27,606		$	(2,168	)	$	113,698

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Summary of Significant Accounting Policies, Nature of Operations and Other Developments (Policies)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Recently Issued Accounting Pronouncements That Are Not Yet Effective

Revenue from Contracts with Customers

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance on the core principle that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU applies to all contracts with customers, except financial instruments, guarantees, lease contracts, insurance contracts and certain non-monetary exchanges. It provides the following five-step revenue recognition model: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. In addition, the ASU requires additional disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015 the FASB issued ASU 2015-14, Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 to interim and annual periods beginning on January 1, 2018, with early adoption permitted in 2017. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which amends the accounting, presentation, and disclosure requirements for certain financial instruments. The ASU requires that all equity investments be recorded at fair value through net income (other than those accounted for under equity method or result in consolidation of the investee); however, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The ASU also requires an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability under the fair value option. The ASU also clarifies that an entity must evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. In addition, the ASU amends the presentation and disclosure requirements for financial instruments and now requires the use of an exit price notion when measuring the fair value of financial instruments for disclosure purposes. This guidance is effective for interim and annual periods beginning on January 1, 2018, with early adoption permitted for the amendments to the accounting for financial liabilities under the fair value option. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

Accounting for Leases

In February 2016, the FASB issued ASU 2016-02, Leases, which will require entities that lease assets (i.e., lessees) to recognize assets and liabilities on their balance sheet for the rights and obligations created by those leases (where lease terms are greater than twelve months).  The accounting by entities that own the assets leased (i.e., lessors) will remain largely unchanged; however, leveraged lease accounting will no longer be permitted for leases that commence after the effective date. The ASU will also require qualitative and quantitative disclosures about the amount, timing and uncertainty of cash flows arising from leases.  The guidance is effective for interim and annual periods beginning on January 1, 2019 and requires a modified retrospective approach, with early adoption permitted. Management is currently assessing the impact of the guidance on the Company’s financial position and results of operations.

Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships

In March 2016, the FASB issued ASU 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships, which clarifies that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument does not, in and of itself, require dedesignation of that hedging relationship. However, entities will still need to evaluate whether all other hedge accounting criteria continue to be met. This ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Entities have the option to adopt the new guidance on a prospective basis to new derivative contract novations or on a modified retrospective basis. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Contingent Put and Call Options in Debt Instruments

In March 2016, the FASB issued ASU 2016-06, Contingent Put and Call Options in Debt Instruments, which clarifies the requirements for assessing whether contingent put or call options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. Current guidance indicates that a contingently exercisable put or call option is clearly and closely related to the debt host if it is indexed only to interest rates or credit risk, but was unclear whether the nature of the exercise contingency itself should be considered in this evaluation. The ASU clarifies that an entity would not separately assess whether the contingency itself is indexed only to interest rates or the credit risk of the entity to conclude the option is clearly and closely related. This guidance is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. The new guidance is required to be applied on a modified retrospective basis to all existing and future debt instruments and an entity will be able to elect the fair value option at transition for the entire debt instrument. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Simplifying the Transition to the Equity Method of Accounting

In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting, which eliminates the requirement to apply the equity method of accounting retrospectively when an investor obtains significant influence over an existing investee.   The ASU requires that (1) the equity method be applied prospectively from the date significant influence is obtained, and (2) investors add the cost of acquiring the additional interest in the investee to the current basis of their previously held interest.  The ASU also provides specific guidance for available-for-sale securities that become eligible for the equity method whereby any unrealized gain or loss recorded within accumulated other comprehensive income must be recognized in earnings on the date the investment initially qualifies for the equity method.   The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted.  Adoption of this guidance will not significantly impact the Company’s financial position or results of operations.

Principal versus Agent Considerations (Reporting Revenue Gross versus Net)

In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net). The ASU amends ASU 2014-09, Revenue from Contracts with Customers, with respect to assessing whether an entity is a principal (and thus presents revenue gross) or an agent (and thus presents revenue net). The amendments retain the guidance that the principal in an arrangement controls a good or service before it is transferred to a customer and clarify: (1) that an entity must first identify the specified good or service being provided to the customer; (2) that the unit of account for the principal versus agent assessment is each specified good or service promised in a contract; (3) indicators and examples to help an entity evaluate whether it is the principal; and (4) how to assess whether an entity controls services performed by another party. The ASU is effective upon the adoption of ASU 2014-09, which is effective for periods beginning January 1, 2018, with early adoption permitted in 2017. Management does not expect the adoption of this guidance to significantly impact the Company’s financial position or results of operations.

Accounting for Share-Based Payments

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The ASU requires recognition of any difference between the deduction for tax purposes and compensation cost recognized for financial reporting purposes as income tax expense or benefit in the income statement (as opposed to recognizing certain excess tax benefits in additional paid-in capital).  The tax effects of exercised or vested awards are now also required to be treated as discrete items in the reporting period in which they occur (rather than through the annual estimated effective tax rate) and excess tax benefits must be recognized regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits are now classified along with other income tax cash flows as an operating activity, as opposed to a financing activity.  With respect to accounting for forfeitures, an entity can now make an accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur.  Additionally, entities may now partially settle awards in cash up to the maximum statutory tax rates in the applicable jurisdictions, without precluding equity classification of the award (current GAAP allows only up to the minimum statutory withholding requirements). The ASU is effective for interim and annual periods beginning on January 1, 2017, with early adoption permitted. Management is currently assessing the impact of this guidance on the Company’s financial position and results of operations.

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Summary of Significant Accounting Policies, Nature of Operations and Other Developments (Tables)

3 Months Ended

Mar. 31, 2016

Accounting Policies [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

Schedule of Change in Accounting Policy

The following tables show the affected line items within the consolidated financial statements:

	December 31, 2015
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	5,377	$	10		$	5,387
Other liabilities	2,023		(6		)	2,017
Retained earnings	8,854		(18		)	8,836
Noncontrolling interests	181		34			215

	December 31, 2014
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	4,630	$	10		$	4,640
Other liabilities	1,897		(6		)	1,891
Retained earnings	8,283		(18		)	8,265
Noncontrolling interests	230		34			264

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Correction of Prior Period Amounts Correction of Prior Period Amounts (Tables)

3 Months Ended

Mar. 31, 2016

Accounting Changes and Error Corrections [Abstract]

Schedule of Change in Accounting Estimate

The following tables show the affected line items within the consolidated financial statements:

	December 31, 2015
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	5,377	$	10		$	5,387
Other liabilities	2,023		(6		)	2,017
Retained earnings	8,854		(18		)	8,836
Noncontrolling interests	181		34			215

	December 31, 2014
(Dollars in millions)	As Previously Reported		Adjustment			As Corrected
Other assets	$	4,630	$	10		$	4,640
Other liabilities	1,897		(6		)	1,891
Retained earnings	8,283		(18		)	8,265
Noncontrolling interests	230		34			264

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Securities (Tables)

3 Months Ended

Mar. 31, 2016

Securities

Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses, and Fair Values of Securities

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains, gross unrealized losses and fair values of securities are presented below.

	March 31, 2016
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	148	$	4	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	6,302		16		10		6,308
Privately issued	202		2		1		203
Privately issued - commercial mortgage-backed securities	1,469		24		1		1,492
Collateralized loan obligations	3,267		—		40		3,227
Other	7		—		—		7
Asset Liability Management securities	11,395		46		52		11,389
Other debt securities:
Direct bank purchase bonds	1,560		45		24		1,581
Other	32		1		—		33
Equity securities	6		2		—		8
Total securities available for sale	$	12,993	$	94	$	76	$	13,011

	December 31, 2015
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Asset Liability Management securities:
U.S. Treasury	$	596	$	1	$	3	$	594
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	7,298		1		98		7,201
Privately issued	150		2		1		151
Privately issued - commercial mortgage-backed securities	1,566		5		25		1,546
Collateralized loan obligations	3,266		1		34		3,233
Other	7		—		—		7
Asset Liability Management securities	12,883		10		161		12,732
Other debt securities:
Direct bank purchase bonds	1,549		45		22		1,572
Other	32		—		—		32
Equity securities	6		2		—		8
Total securities available for sale	$	14,470	$	57	$	183	$	14,344

Proceeds from Sales of Securities Available for Sale and Gross Realized Gains and Losses

The gross realized gains and losses from sales of available for sale securities for the three months endedMarch 31, 2016 and 2015 are shown below. The specific identification method is used to calculate realized gains and losses on sales.

	For the Three Months Ended March 31,
(Dollars in millions)	2016		2015
Gross realized gains	$	13	$	5
Gross realized losses	—		—

Schedule of Held to Maturity Securities Recognized and Not Recognized in Other Comprehensive Income (OCI) and Fair Values

At March 31, 2016 and December 31, 2015, the amortized cost, gross unrealized gains and losses recognized in OCI, carrying amount, gross unrealized gains and losses not recognized in OCI, and fair values of securities held to maturity are presented below. Management has asserted the positive intent and ability to hold these securities to maturity.

	March 31, 2016
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	490	$	—	$	—	$	490	$	12	$	—	$	502
U.S. government-sponsored agencies	200		—		—		200		—		—		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	8,301		4		51		8,254		154		5		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,731		—		70		1,661		82		—		1,743
Total securities held to maturity	$	10,722	$	4	$	121	$	10,605	$	248	$	5	$	10,848

	December 31, 2015
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	489	$	—	$	—	$	489	$	4	$	—	$	493
U.S. government-sponsored agencies	220		—		—		220		—		4		216
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	7,831		4		53		7,782		49		41		7,790
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	1,740		—		73		1,667		46		5		1,708
Total securities held to maturity	$	10,280	$	4	$	126	$	10,158	$	99	$	50	$	10,207

Securities Available for Sale

Securities

Securities in Unrealized Loss Position

The Company’s securities available for sale with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, identified for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	$	649	$	3	$	2,006	$	7	$	2,655	$	10
Privately issued	15		—		35		1		50		1
Privately issued - commercial mortgage-backed securities	119		—		82		1		201		1
Collateralized loan obligations	1,765		14		1,340		26		3,105		40
Other	—		—		1		—		1		—
Asset Liability Management securities	2,548		17		3,464		35		6,012		52
Other debt securities:
Direct bank purchase bonds	236		8		655		16		891		24
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	2,784	$	25	$	4,124	$	51	$	6,908	$	76

	December 31, 2015
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset Liability Management securities:
U.S. Treasury	$	295	$	3	$	—	$	—	$	295	$	3
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	4,692		57		2,278		41		6,970		98
Privately issued	39		—		38		1		77		1
Privately issued - commercial mortgage-backed securities	1,154		24		65		1		1,219		25
Collateralized loan obligations	1,497		11		1,290		23		2,787		34
Asset Liability Management securities	7,677		95		3,671		66		11,348		161
Other debt securities:
Direct bank purchase bonds	157		4		686		18		843		22
Other	2		—		—		—		2		—
Equity securities	—		—		5		—		5		—
Total securities available for sale	$	7,836	$	99	$	4,362	$	84	$	12,198	$	183

Debt Securities by Contractual Maturity

The fair value of debt securities available for sale by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
(Dollars in millions)	One Year or Less		Over One Year Through Five Years		Over Five Years Through Ten Years		Over Ten Years		Total Fair Value
Asset Liability Management securities:
U.S. Treasury	$	—	$	—	$	152	$	—	$	152
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies	—		17		372		5,919		6,308
Privately issued	—		3		—		200		203
Privately issued - commercial mortgage-backed securities	—		—		37		1,455		1,492
Collateralized loan obligations	—		16		1,858		1,353		3,227
Other	—		2		5		—		7
Asset Liability Management securities	—		38		2,424		8,927		11,389
Other debt securities:
Direct bank purchase bonds	67		346		698		470		1,581
Other	—		1		—		32		33
Total debt securities available for sale	$	67	$	385	$	3,122	$	9,429	$	13,003

Securities Held to Maturity

Securities

Securities in Unrealized Loss Position

The Company’s securities held to maturity with a continuous unrealized loss position at March 31, 2016 and December 31, 2015 are shown below, separately for periods less than 12 months and 12 months or more.

	March 31, 2016
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	$	451	$	—	$	4	$	1,832	$	51	$	1	$	2,283	$	51	$	5
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	92		—		—		1,463		70		—		1,555		70		—
Total securities held to maturity	$	543	$	—	$	4	$	3,295	$	121	$	1	$	3,838	$	121	$	5

	December 31, 2015
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
U.S. government-sponsored agencies	$	196	$	—	$	4	$	—	$	—	$	—	$	196	$	—	$	4
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	3,297		—		39		1,705		53		2		5,002		53		41
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	197		—		1		1,428		73		4		1,625		73		5
Total securities held to maturity	$	3,690	$	—	$	44	$	3,133	$	126	$	6	$	6,823	$	126	$	50

Debt Securities by Contractual Maturity

The carrying amount and fair value of securities held to maturity by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2016
	Over One Year Through Five Years				Over Five Years Through Ten Years				Over Ten Years				Total
(Dollars in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
U.S. Treasury	$	490	$	502	$	—	$	—	$	—	$	—	$	490	$	502
U.S. government-sponsored agencies	—		—		200		200		—		—		200		200
U.S. government agency and government-sponsored agencies - residential mortgage-backed securities	—		—		92		94		8,162		8,309		8,254		8,403
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities	49		51		801		863		811		829		1,661		1,743
Total securities held to maturity	$	539	$	553	$	1,093	$	1,157	$	8,973	$	9,138	$	10,605	$	10,848

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Loans and Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2016

Receivables [Abstract]

Summary of Loans

The following table provides the outstanding balances of loans at March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016			December 31, 2015
Loans held for investment:
Commercial and industrial	$	30,212		$	29,730
Commercial mortgage	14,920			13,904
Construction	2,251			2,297
Lease financing	732			737
Total commercial portfolio	48,115			46,668
Residential mortgage	27,495			27,344
Home equity and other consumer loans	3,385			3,251
Total consumer portfolio	30,880			30,595
Total loans held for investment, before purchased credit-impaired loans	78,995			77,263
Purchased credit-impaired loans(1)	304			336
Total loans held for investment(2)	79,299			77,599
Allowance for loan losses	(879		)	(721		)
Loans held for investment, net	$	78,420		$	76,878

(1) Includes $16 million and $19 million as of March 31, 2016 and December 31, 2015, respectively, of loans for which the Company will be reimbursed a portion of any future losses under the terms of the FDIC loss share agreements.

(2) Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

Reconciliation of Changes in Allowance for Loan Losses by Portfolio Segment

The following tables provide a reconciliation of changes in the allowance for loan losses by portfolio segment:

	For the Three Months Ended March 31, 2016
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired			Unallocated			Total
Allowance for loan losses, beginning of period	$	651		$	49		$	1		$	20		$	721
(Reversal of) provision for loan losses	171			8			(1		)	(20		)	158
Other	4			—			—			—			4
Loans charged-off	(8		)	(1		)	—			—			(9		)
Recoveries of loans previously charged-off	4			1			—			—			5
Allowance for loan losses, end of period	$	822		$	57		$	—		$	—		$	879

	For the Three Months Ended March 31, 2015
(Dollars in millions)	Commercial			Consumer			Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses, beginning of period	$	465		$	49		$	3	$	20	$	537
(Reversal of) provision for loan losses	(5		)	2			—		—		(3		)
Other	(1		)	—			—		—		(1		)
Loans charged-off	(4		)	(3		)	—		—		(7		)
Recoveries of loans previously charged-off	4			—			—		—		4
Allowance for loan losses, end of period	$	459		$	48		$	3	$	20	$	530

Allowance for Loan Losses and Related Loan Balances by Portfolio Segment

The following tables show the allowance for loan losses and related loan balances by portfolio segment as of March 31, 2016 and December 31, 2015:

	March 31, 2016
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	265	$	13	$	—	$	—	$	278
Collectively evaluated for impairment	557		44		—		—		601
Total allowance for loan losses	$	822	$	57	$	—	$	—	$	879
Loans held for investment:
Individually evaluated for impairment	$	752	$	301	$	1	$	—	$	1,054
Collectively evaluated for impairment	47,363		30,579		—		—		77,942
Purchased credit-impaired loans	—		—		303		—		303
Total loans held for investment	$	48,115	$	30,880	$	304	$	—	$	79,299

	December 31, 2015
(Dollars in millions)	Commercial		Consumer		Purchased Credit- Impaired		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	101	$	13	$	—	$	—	$	114
Collectively evaluated for impairment	550		36		—		20		606
Purchased credit-impaired loans	—		—		1		—		1
Total allowance for loan losses	$	651	$	49	$	1	$	20	$	721
Loans held for investment:
Individually evaluated for impairment	$	525	$	307	$	1	$	—	$	833
Collectively evaluated for impairment	46,143		30,288		—		—		76,431
Purchased credit-impaired loans	—		—		335		—		335
Total loans held for investment	$	46,668	$	30,595	$	336	$	—	$	77,599

Summary of Nonaccrual Loans

The following table presents nonaccrual loans as of March 31, 2016 and December 31, 2015:

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	702	$	284
Commercial mortgage	30		37
Total commercial portfolio	732		321
Residential mortgage	186		190
Home equity and other consumer loans	32		35
Total consumer portfolio	218		225
Total nonaccrual loans, before purchased credit-impaired loans	950		546
Purchased credit-impaired loans	6		6
Total nonaccrual loans	$	956	$	552
Troubled debt restructured loans that continue to accrue interest	$	229	$	413
Troubled debt restructured nonaccrual loans (included in the total nonaccrual loans above)	$	598	$	409

Aging of Balance of Loans Held for Investment, Excluding Purchased Credit-Impaired Loans

The following tables show an aging of the balance of loans held for investment, excluding purchased credit-impaired loans, by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,869	$	64	$	11	$	75	$	30,944
Commercial mortgage	14,886		26		8		34		14,920
Construction	2,251		—		—		—		2,251
Total commercial portfolio	48,006		90		19		109		48,115
Residential mortgage	27,357		90		48		138		27,495
Home equity and other consumer loans	3,363		13		9		22		3,385
Total consumer portfolio	30,720		103		57		160		30,880
Total loans held for investment, excluding purchased credit-impaired loans	$	78,726	$	193	$	76	$	269	$	78,995

	December 31, 2015
	Aging Analysis of Loans
(Dollars in millions)	Current		30 to 89 Days Past Due		90 Days or More Past Due		Total Past Due		Total
Commercial and industrial	$	30,446	$	15	$	6	$	21	$	30,467
Commercial mortgage	13,880		17		7		24		13,904
Construction	2,292		5		—		5		2,297
Total commercial portfolio	46,618		37		13		50		46,668
Residential mortgage	27,206		92		46		138		27,344
Home equity and other consumer loans	3,225		14		12		26		3,251
Total consumer portfolio	30,431		106		58		164		30,595
Total loans held for investment, excluding purchased credit-impaired loans	$	77,049	$	143	$	71	$	214	$	77,263

Loans in Commercial Portfolio Segment and Commercial Loans within Purchased Credit-Impaired Loans Segment Monitored for Credit Quality Based on Internal Ratings

The following tables summarize the loans in the commercial portfolio segment and commercial loans outstanding within the purchased credit-impaired loans segment monitored for credit quality based on internal ratings. The amounts presented reflect unpaid principal balances less charge-offs.

	March 31, 2016
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,143	$	852	$	1,843	$	30,838
Commercial mortgage	14,472		141		171		14,784
Construction	2,193		59		—		2,252
Total commercial portfolio	44,808		1,052		2,014		47,874
Purchased credit-impaired loans	33		8		57		98
Total	$	44,841	$	1,060	$	2,071	$	47,972

	December 31, 2015
			Criticized
(Dollars in millions)	Pass		Special Mention		Classified		Total
Commercial and industrial	$	28,228	$	844	$	1,265	$	30,337
Commercial mortgage	13,470		139		149		13,758
Construction	2,240		57		—		2,297
Total commercial portfolio	43,938		1,040		1,414		46,392
Purchased credit-impaired loans	40		12		61		113
Total	$	43,978	$	1,052	$	1,475	$	46,505

Loans in Consumer Portfolio an Purchased credit-impaired loans

The following tables summarize the loans in the consumer portfolio segment and purchased credit-impaired loans segment, which excludes $15 million and $18 million of loans covered by FDIC loss share agreements, at March 31, 2016 and December 31, 2015, respectively:

	March 31, 2016
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,309	$	186	$	27,495
Home equity and other consumer loans	3,353		32		3,385
Total consumer portfolio	30,662		218		30,880
Purchased credit-impaired loans	139		—		139
Total	$	30,801	$	218	$	31,019

	December 31, 2015
(Dollars in millions)	Accrual		Nonaccrual		Total
Residential mortgage	$	27,154	$	190	$	27,344
Home equity and other consumer loans	3,216		35		3,251
Total consumer portfolio	30,370		225		30,595
Purchased credit-impaired loans	148		—		148
Total	$	30,518	$	225	$	30,743

Loans in Consumer Portfolio Segment and Consumer Loans within Purchased Credit-Impaired Loans Segment Monitored for Credit Quality Based on Refreshed FICO Scores and Refreshed LTV ratios

These tables exclude loans covered by FDIC loss share agreements, as discussed above. The amounts presented reflect unpaid principal balances less partial charge-offs.

	March 31, 2016
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,311		$	5,482		$	467		$	27,260
Home equity and other consumer loans	2,345			896			83			3,324
Total consumer portfolio	23,656			6,378			550			30,584
Purchased credit-impaired loans	57			71			11			139
Total	$	23,713		$	6,449		$	561		$	30,723
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

	December 31, 2015
	FICO scores
(Dollars in millions)	720 and above			Below 720			No FICO Available(1)			Total
Residential mortgage	$	21,209		$	5,412		$	488		$	27,109
Home equity and other consumer loans	2,276			818			85			3,179
Total consumer portfolio	23,485			6,230			573			30,288
Purchased credit-impaired loans	60			76			12			148
Total	$	23,545		$	6,306		$	585		$	30,436
Percentage of total	77		%	21		%	2		%	100		%

(1) Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

	March 31, 2016
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,396		$	764		$	48		$	52		$	27,260
Home equity loans	2,117			210			79			100			2,506
Total consumer portfolio	28,513			974			127			152			29,766
Purchased credit-impaired loans	101			27			9			1			138
Total	$	28,614		$	1,001		$	136		$	153		$	29,904
Percentage of total	96		%	3		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

	December 31, 2015
	LTV ratios
(Dollars in millions)	Less than or Equal to 80 Percent			Greater than 80 and Less than 100 Percent			Greater than or Equal to 100 Percent			No LTV Available(1)			Total
Residential mortgage	$	26,143		$	804		$	52		$	110		$	27,109
Home equity loans	2,190			217			83			55			2,545
Total consumer portfolio	28,333			1,021			135			165			29,654
Purchased credit-impaired loans	106			32			9			—			147
Total	$	28,439		$	1,053		$	144		$	165		$	29,801
Percentage of total	95		%	4		%	—		%	1		%	100		%

(1) Represents loans for which management was not able to obtain refreshed property values.

Summary of Troubled Debt Restructurings

The following table provides a summary of the Company’s recorded investment in TDRs as of March 31, 2016 and December 31, 2015. The summary includes those TDRs that are on nonaccrual status and those that continue to accrue interest. The Company had $29 million and $98 million in commitments to lend additional funds to borrowers with loan modifications classified as TDRs as of March 31, 2016 and December 31, 2015, respectively.

(Dollars in millions)	March 31, 2016		December 31, 2015
Commercial and industrial	$	509	$	499
Commercial mortgage	17		16
Total commercial portfolio	526		515
Residential mortgage	270		276
Home equity and other consumer loans	31		31
Total consumer portfolio	301		307
Total restructured loans, excluding purchased credit-impaired loans	$	827	$	822

Pre- and Post-Modification Outstanding Recorded Investment Amounts of Troubled Debt Restructurings

The following table provides the pre- and post-modification outstanding recorded investment amounts of TDRs as of the date of the restructuring that occurred during the three months ended March 31, 2016 and 2015:

	For the Three Months Ended March 31, 2016				For the Three Months Ended March 31, 2015
(Dollars in millions)	Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)		Pre-Modification Outstanding Recorded Investment(1)		Post-Modification Outstanding Recorded Investment(2)
Commercial and industrial	$	50	$	50	$	72	$	72
Commercial mortgage	5		5		2		2
Total commercial portfolio	55		55		74		74
Residential mortgage	4		4		4		4
Home equity and other consumer loans	1		1		1		1
Total consumer portfolio	5		5		5		5
Total	$	60	$	60	$	79	$	79

(1) Represents the recorded investment in the loan immediately prior to the restructuring event.

(2) Represents the recorded investment in the loan immediately following the restructuring event. It includes the effect of paydowns that were required as part of the restructuring terms.

Recorded Investment Amounts of Troubled Debt Restructurings

The following table provides the recorded investment amounts of TDRs at the date of default, for which there was a payment default during the three months ended March 31, 2016 and 2015, and where the default occurred within the first twelve months after modification into a TDR. A payment default is defined as the loan being 60 days or more past due.

(Dollars in millions)	For the Three Months Ended March 31, 2016		For the Three Months Ended March 31, 2015
Commercial and industrial	$	1	$	4
Commercial mortgage	—		1
Total commercial portfolio	1		5
Residential mortgage	2		—
Total consumer portfolio	2		—
Total	$	3	$	5

Information about Impaired Loans by Class

The following tables show information about impaired loans by class as of March 31, 2016 and December 31, 2015:

	March 31, 2016
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	704	$	32	$	736	$	264	$	732	$	34
Commercial mortgage	14		2		16		1		14		2
Total commercial portfolio	718		34		752		265		746		36
Residential mortgage	179		91		270		12		194		107
Home equity and other consumer loans	9		22		31		1		10		33
Total consumer portfolio	188		113		301		13		204		140
Total, excluding purchased credit-impaired loans	906		147		1,053		278		950		176
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	907	$	147	$	1,054	$	278	$	951	$	176

	December 31, 2015
	Recorded Investment								Unpaid Principal Balance
(Dollars in millions)	With an Allowance		Without an Allowance		Total		Allowance for Impaired Loans		With an Allowance		Without an Allowance
Commercial and industrial	$	363	$	142	$	505	$	100	$	377	$	144
Commercial mortgage	14		6		20		1		15		9
Total commercial portfolio	377		148		525		101		392		153
Residential mortgage	183		93		276		13		199		109
Home equity and other consumer loans	9		22		31		—		10		35
Total consumer portfolio	192		115		307		13		209		144
Total, excluding purchased credit-impaired loans	569		263		832		114		601		297
Purchased credit-impaired loans	1		—		1		—		1		—
Total	$	570	$	263	$	833	$	114	$	602	$	297

Average Investment in Impaired Loans and Interest Income Recognized for Impaired Loans

The following table presents the average recorded investment in impaired loans and the amount of interest income recognized for impaired loans during the three months ended March 31, 2016 and 2015 for the commercial, consumer and purchased credit-impaired loans portfolio segments.

	For the Three Months Ended March 31,
	2016				2015
(Dollars in millions)	Average Recorded Investment		Recognized Interest Income		Average Recorded Investment		Recognized Interest Income
Commercial and industrial	$	623	$	2	$	149	$	2
Commercial mortgage	18		—		35		—
Construction	—		—		—		—
Total commercial portfolio	641		2		184		2
Residential mortgage	273		2		306		3
Home equity and other consumer loans	31		1		30		1
Total consumer portfolio	304		3		336		4
Total, excluding purchased credit-impaired loans	945		5		520		6
Purchased credit-impaired loans	1		—		1		—
Total	$	946	$	5	$	521	$	6

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Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2016

Variable Interest Entities

Schedule of assets and liabilities of VIEs

The following table presents the impact of the unconsolidated LIHC investments on our consolidated statements of income for the three months endedMarch 31, 2016 and 2015:

	For the Three Months Ended
	March 31, 2016		March 31, 2015
(Dollars in millions)
Losses from LIHC investments included in other noninterest expense	$	2	$	2
Amortization of LIHC investments included in income tax expense	30		27
Tax credits and other tax benefits from LIHC investments included in income tax expense	45		46

Consolidated VIEs

Variable Interest Entities

Schedule of assets and liabilities of VIEs

The following tables present the assets and liabilities of consolidated VIEs recorded on the Company’s consolidated balance sheets at March 31, 2016 and December 31, 2015:

	March 31, 2016
	Consolidated Assets								Consolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Loans Held for Investment, net		Other Assets		Total Assets		Other Liabilities		Total Liabilities
LIHC investments	$	8	$	—	$	170	$	178	$	—	$	—
Leasing investments	4		585		158		747		67		67
Total consolidated VIEs	$	12	$	585	$	328	$	925	$	67	$	67

Unconsolidated VIEs

Variable Interest Entities

Schedule of assets and liabilities of VIEs

The following tables present the Company’s carrying amounts related to the unconsolidated VIEs at March 31, 2016 and December 31, 2015. The tables also present the Company’s maximum exposure to loss resulting from its involvement with these VIEs. The maximum exposure to loss represents the carrying amount of the Company’s involvement plus any legally binding unfunded commitments in the unlikely event that all of the assets in the VIEs become worthless. During the three months endedMarch 31, 2016 and March 31, 2015, the Company had noncash increases in unfunded commitments on LIHC investments of $37 million and $32 million, respectively, included within other liabilities.

	March 31, 2016
	Unconsolidated Assets										Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	190	$	1,169	$	1,384	$	420	$	420	$	1,384
Leasing investments	5		—		20		1,194		1,219		61		61		1,240
Other investments	—		—		34		27		61		—		—		86
Total unconsolidated VIEs	$	5	$	25	$	244	$	2,390	$	2,664	$	481	$	481	$	2,710

			December 31, 2015
			Unconsolidated Assets								Unconsolidated Liabilities
(Dollars in millions)	Interest Bearing Deposits in Banks		Securities Available for Sale		Loans Held for Investment		Other Assets		Total Assets		Other Liabilities		Total Liabilities		Maximum Exposure to Loss
LIHC investments	$	—	$	25	$	220	$	1,166	$	1,411	$	424	$	424	$	1,411
Leasing investments	5		—		20		1,200		1,225		61		61		1,245
Other investments	—		—		49		10		59		—		—		60
Total unconsolidated VIEs	$	5	$	25	$	289	$	2,376	$	2,695	$	485	$	485	$	2,716

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Commercial Paper and Other Short-Term Borrowings (Tables)

3 Months Ended

Mar. 31, 2016

Short-term Debt [Abstract]

Summary of Commercial Paper and Other Short-Term Borrowings

The following table is a summary of the Company's commercial paper and other short-term borrowings:

(Dollars in millions)	March 31, 2016		December 31, 2015
Federal funds purchased and securities sold under repurchase agreements, with weighted average interest rates of 0.34% and 0.30% at March 31, 2016 and December 31, 2015, respectively	$	14	$	44
Commercial paper, with a weighted average interest rate of 0.35% and 0.23% at March 31, 2016 and December 31, 2015, respectively	633		994
Total commercial paper and other short-term borrowings	$	647	$	1,038

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Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Summary of Long-Term Debt

The following is a summary of the Company's long-term debt:

(Dollars in millions)	March 31, 2016		December 31, 2015
Debt issued by MUAH
Senior debt:
Floating rate senior notes due February 2018. These notes, which bear interest at 0.57% above 3-month LIBOR, had a rate of 1.19% at March 31, 2016 and 0.91% at December 31, 2015	$	249	$	250
Fixed rate 1.625% notes due February 2018	449		450
Fixed rate 2.25% notes due February 2020	996		1,000
Fixed rate 3.50% notes due June 2022	397		398
Fixed rate 3.00% notes due February 2025	495		498
Subordinated debt due to BTMU:
Floating rate subordinated debt due December 2023. This note, which bears interest at 1.38% above 3-month LIBOR, had a rate of 2.01% at March 31, 2016 and 1.98% at December 31, 2015	300		300
Junior subordinated debt payable to trusts(1):
Floating rate note due September 2036. This note had an interest rate of 2.33% at March 31, 2016 and 2.21% at December 31, 2015	36		36
Total debt issued by MUAH	2,922		2,932
Debt issued by MUB and other subsidiaries
Senior debt:
Fixed rate FHLB of San Francisco advances due February 2016. These notes bear a combined weighted-average rate of 2.50% at December 31, 2015	—		500
Fixed rate 3.00% notes due June 2016	700		700
Fixed rate 1.50% notes due September 2016	500		499
Floating rate notes due September 2016. These notes, which bear interest at 0.75% above 3-month LIBOR, had a rate of 1.38% at March 31, 2016 and 1.35% at December 31, 2015	500		500
Floating rate notes due May 2017. These notes, which bear interest at 0.40% above 3-month LIBOR, had a rate of 1.02% at March 31, 2016 and 0.73% at December 31, 2015	250		250
Fixed rate 2.125% notes due June 2017	499		499
Fixed rate 2.625% notes due September 2018	998		1,000
Fixed rate 2.250% notes due May 2019	509		502
Senior debt due to BTMU:
Floating rate debt due January 2018. This note, which bears interest at 0.85% above 1-month LIBOR, had a rate of 1.29% at March 31, 2016 and 1.09% at December 31, 2015	1,000		1,000
Floating rate debt due January 2018. This note, which bears interest at 0.87% above 1-month LIBOR, had a rate of 1.31% at March 31, 2016 and 1.11% at December 31, 2015	1,500		1,500
Floating rate debt due January 2018. This note, which bears interest at 1.03% above 1-month LIBOR, had a rate of 1.47% at March 31, 2016 and 1.27% at December 31, 2015	1,000		1,000
Subordinated debt:
Fixed rate 5.95% notes due May 2016	701		703
Subordinated debt due to BTMU:
Floating rate subordinated debt due June 2023. This note, which bears interest at 1.20% above 3-month LIBOR, had a rate of 1.83% at March 31, 2016 and 1.80% at December 31, 2015	750		750
Capital lease obligations with a combined weighted-average interest rate of 4.92% at March 31, 2016 and December 31, 2015(1)	14		14
Total debt issued by MUB and other subsidiaries	8,921		9,417
Total long-term debt	$	11,843	$	12,349

(1) Long-term debt assumed through acquisitions

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Fair Value Measurement and Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis

The following tables present financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2016 and December 31, 2015, by major category and by valuation hierarchy level:

	March 31, 2016
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	36		$	—		$	—		$	36
U.S. government-sponsored agency securities	—			97			—			—			97
State and municipal securities	—			8			—			—			8
Interest rate derivative contracts	1			1,394			2			(254		)	1,143
Commodity derivative contracts	—			367			3			(351		)	19
Foreign exchange derivative contracts	1			111			1			(54		)	59
Equity derivative contracts	—			—			183			(175		)	8
Total trading account assets	2			2,013			189			(834		)	1,370
Securities available for sale:
U.S. Treasury	—			152			—			—			152
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			6,308			—			—			6,308
Privately issued	—			203			—			—			203
Privately issued - commercial mortgage-backed securities	—			1,492			—			—			1,492
Collateralized loan obligations	—			3,227			—			—			3,227
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,581			—			1,581
Other	—			1			32			—			33
Equity securities	8			—			—			—			8
Total securities available for sale	8			11,390			1,613			—			13,011
Other assets:
Mortgage servicing rights	—			—			13			—			13
Interest rate hedging contracts	—			271			—			(205		)	66
Other derivative contracts	—			3			2			(3		)	2
Total other assets	—			274			15			(208		)	81
Total assets	$	10		$	13,677		$	1,817		$	(1,042	)	$	14,462
Percentage of total	—		%	94		%	13		%	(7		)%	100		%
Percentage of total Company assets	—		%	11		%	2		%	(1		)%	12		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	3		$	1,344		$	—		$	(1,150	)	$	197
Commodity derivative contracts	—			330			3			(78		)	255
Foreign exchange derivative contracts	—			130			1			(38		)	93
Equity derivative contracts	—			—			183			—			183
Securities sold, not yet purchased	—			19			—			—			19
Total trading account liabilities	3			1,823			187			(1,266		)	747
Other liabilities:
FDIC clawback liability	—			—			115			—			115
Other derivative contracts	—			1			1			—			2
Total other liabilities	—			1			116			—			117
Total liabilities	$	3		$	1,824		$	303		$	(1,266	)	$	864
Percentage of total	—		%	211		%	35		%	(146		)%	100		%
Percentage of total Company liabilities	—		%	2		%	—		%	(1		)%	1		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

	December 31, 2015
(Dollars in millions)	Level 1			Level 2			Level 3			Netting Adjustment(1)			Fair Value
Assets
Trading account assets:
U.S. Treasury securities	$	—		$	37		$	—		$	—		$	37
U.S. government-sponsored agency securities	—			106			—			—			106
State and municipal securities	—			3			—			—			3
Commercial Paper	—			25			—			—			25
Interest rate derivative contracts	—			998			4			(163		)	839
Commodity derivative contracts	—			408			1			(384		)	25
Foreign exchange derivative contracts	1			115			1			(70		)	47
Equity derivative contracts	—			—			222			(217		)	5
Total trading account assets	1			1,692			228			(834		)	1,087
Securities available for sale:
U.S. Treasury	—			594			—			—			594
Residential mortgage-backed securities:
U.S government and government-sponsored agencies	—			7,201			—			—			7,201
Privately issued	—			151			—			—			151
Privately issued - commercial mortgage-backed securities	—			1,546			—			—			1,546
Collateralized loan obligations	—			3,233			—			—			3,233
Other	—			7			—			—			7
Other debt securities:
Direct bank purchase bonds	—			—			1,572			—			1,572
Other	—			1			31			—			32
Equity securities	8			—			—			—			8
Total securities available for sale	8			12,733			1,603			—			14,344
Other assets:
Interest rate hedging contracts	—			73			—			(71		)	2
Other derivative contracts	—			4			1			(4		)	1
Total other assets	—			77			1			(75		)	3
Total assets	$	9		$	14,502		$	1,832		$	(909	)	$	15,434
Percentage of total	—		%	94		%	12		%	(6		)%	100		%
Percentage of total Company assets	—		%	12		%	2		%	(1		)%	13		%
Liabilities
Trading account liabilities:
Interest rate derivative contracts	$	1		$	947		$	—		$	(775	)	$	173
Commodity derivative contracts	—			368			1			(61		)	308
Foreign exchange derivative contracts	1			91			1			(22		)	71
Equity derivative contracts	—			—			221			—			221
Securities sold, not yet purchased	—			23			—			—			23
Total trading account liabilities	2			1,429			223			(858		)	796
Other liabilities:
FDIC clawback liability	—			—			112			—			112
Interest rate hedging contracts	—			14			—			(14		)	—
Other derivative contracts	—			—			2			—			2
Total other liabilities	—			14			114			(14		)	114
Total liabilities	$	2		$	1,443		$	337		$	(872	)	$	910
Percentage of total	—		%	159		%	37		%	(96		)%	100		%
Percentage of total Company liabilities	—		%	1		%	—		%	(1		)%	—		%

(1) Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

Reconciliation of Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs

The following tables present a reconciliation of the assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2016 and 2015. Level 3 available for sale securities at March 31, 2016 and 2015 primarily consist of direct bank purchase bonds. The Company’s policy is to recognize transfers in and out of Level 1, 2 and 3 as of the end of a reporting period.

	For the Three Months Ended
	March 31, 2016														March 31, 2015
(Dollars in millions)	Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities			Trading Assets			Securities Available for Sale			Other Assets		Trading Liabilities			Other Liabilities
Asset (liability) balance, beginning of period	$	228		$	1,603		$	1	$	(223	)	$	(114	)	$	311		$	1,790		$	2	$	(305	)	$	(107	)
Total gains (losses) (realized/unrealized):
Included in income before taxes	(18		)	—			1		17			(2		)	8			—			1		(10		)	(2		)
Included in other comprehensive income	—			(2		)	—		—			—			—			(3		)	—		—			—
Purchases/additions	—			78			—		—			—			—			9			—		—			—
Settlements	(21		)	(66		)	—		19			—			(13		)	(102		)	—		14			—
Transfers in (out) of level 3	—			—			13		—			—			—			—			—		—			—
Asset (liability) balance, end of period	$	189		$	1,613		$	15	$	(187	)	$	(116	)	$	306		$	1,694		$	3	$	(301	)	$	(109	)
Changes in unrealized gains (losses) included in income before taxes for assets and liabilities still held at end of period	$	(18	)	$	—		$	1	$	17		$	(2	)	$	8		$	—		$	1	$	(10	)	$	(2	)

Significant Unobservable Inputs Level 3 Assets and Liabilities

The following table presents information about significant unobservable inputs related to the Company’s significant Level 3 assets and liabilities at March 31, 2016.

	March 31, 2016
(Dollars in millions)	Level 3 Fair Value		Valuation Technique	Significant Unobservable Input(s)	Range of Inputs		Weighted Average
Securities available for sale:
Direct bank purchase bonds	$	1,581	Return on equity	Market-required return on capital	8.0 - 10.0	%	9.8	%
				Probability of default	0.0 - 25.0	%	0.4	%
				Loss severity	10.0 - 60.0	%	29.2	%
Other liabilities:
FDIC clawback liability	$	115	Discounted cash flow	Probability of default	0.2 - 100.0	%	56.6	%
				Loss severity	0.0 - 100.0	%	30.8	%

Financial Assets Measured at Fair Value on Nonrecurring Basis

For assets measured at fair value on a nonrecurring basis during the three months ended March 31, 2016 and 2015 that were still held on the consolidated balance sheet as of the respective periods ended, the following tables present the fair value of such assets by the level of valuation assumptions used to determine each fair value adjustment.

	March 31, 2016								Gain (Loss) For the Three Months Ended March 31, 2016
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Loans held for sale	$	5	$	—	$	—	$	5	$	(3	)
Impaired loans	375		—		—		375		(127		)
Premises and equipment	—		—		—		—		(4		)
Other assets:
OREO	2		—		—		2		(1		)
Private equity investments	10		—		—		10		(12		)
Intangible assets	—		—		—		—		(1		)
Total	$	392	$	—	$	—	$	392	$	(148	)

	March 31, 2015								Gain (Loss) For the Three Months Ended March 31, 2015
(Dollars in millions)	Fair Value		Level 1		Level 2		Level 3
Loans:
Impaired loans	$	46	$	—	$	—	$	46	$	(6	)
Other assets:
OREO	9		—		—		9		—
Private equity investments	7		—		—		7		(5		)
Total	$	62	$	—	$	—	$	62	$	(11	)

Carrying Amount and Estimated Fair Value of Financial Instruments

The tables below present the carrying amount and estimated fair value of certain financial instruments, classified by valuation hierarchy level as of March 31, 2016 and as of December 31, 2015:

	March 31, 2016
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	8,324	$	8,324	$	8,324	$	—	$	—
Securities held to maturity	10,605		10,848		—		10,848		—
Loans held for investment (1)	77,697		79,411		—		—		79,411
Liabilities
Deposits	$	89,500	$	89,548	$	—	$	89,548	$	—
Commercial paper and other short-term borrowings	647		647		—		647		—
Long-term debt	11,843		11,900		—		11,900		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	241	$	241	$	—	$	—	$	241

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

	December 31, 2015
(Dollars in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents	$	4,529	$	4,529	$	4,529	$	—	$	—
Securities held to maturity	10,158		10,207		—		10,207		—
Loans held for investment (1)	76,150		77,640		—		—		77,640
Other assets	16		17		—		—		17
Liabilities
Deposits	$	84,340	$	84,375	$	—	$	84,375	$	—
Commercial paper and other short-term borrowings	1,038		1,038		—		1,038		—
Long-term debt	12,349		12,351		—		12,351		—
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit	$	243	$	243	$	—	$	—	$	243

(1) Excludes lease financing. The carrying amount is net of the allowance for loan and lease losses.

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Derivative Instruments and Other Financial Instruments Used For Hedging (Tables)

3 Months Ended

Mar. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts, Balance Sheet Location and Fair Value Amounts of Derivative Instruments

The table below presents the notional amounts and fair value amounts of the Company's derivative instruments reported on the consolidated balance sheets, segregated between derivative instruments designated and qualifying as hedging instruments and derivative instruments not designated as hedging instruments as of March 31, 2016 and December 31, 2015, respectively. Asset and liability values are presented gross, excluding the impact of legally enforceable master netting and credit support annex agreements. The fair value of asset and liability derivatives designated and qualifying as hedging instruments and derivatives designated as other risk management are included in other assets and other liabilities, respectively. The fair value of asset and liability trading derivatives are included in trading account assets and trading account liabilities, respectively.

	March 31, 2016						December 31, 2015
			Fair Value						Fair Value
	Notional		Asset		Liability		Notional		Asset		Liability
(Dollars in millions)	Amount		Derivatives		Derivatives		Amount		Derivatives		Derivatives
Cash flow hedges
Interest rate contracts	$	14,300	$	259	$	—	$	15,250	$	68	$	14
Fair value hedges
Interest rate contracts	500		12		—		500		5		—
Not designated as hedging instruments:
Trading
Interest rate contracts	100,017		1,397		1,347		100,932		1,002		948
Commodity contracts	3,410		370		333		3,775		409		369
Foreign exchange contracts	7,060		113		131		5,541		117		93
Equity contracts	3,155		183		183		3,351		222		221
Total Trading	113,642		2,063		1,994		113,599		1,750		1,631
Other risk management	283		5		2		251		5		2
Total derivative instruments	$	128,725	$	2,339	$	1,996	$	129,600	$	1,828	$	1,647

Amount and Location of Gains and Losses for Derivatives Designated as Cash Flow Hedges

The following tables present the amount and location of the net gains and losses recorded in the Company’s consolidated statements of income and changes in stockholder’s equity for derivatives designated as cash flow hedges for the three months ended March 31, 2016 and 2015:

	Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)					Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)					Gain (Loss) Recognized in Income on Derivative Instruments (Ineffective Portion)
	For the Three Months Ended March 31,					For the Three Months Ended March 31,					For the Three Months Ended March 31,
(Dollars in millions)	2016		2015		Location	2016		2015		Location	2016		2015
Derivatives in cash flow hedging relationships
					Interest income	$	43	$	32
Interest rate contracts	$	266	$	119	Interest expense	—		1		Noninterest expense	$	1	$	1
Total	$	266	$	119		$	43	$	33		$	1	$	1

Schedule of derivative gains (losses) on the Company's fair value hedges

The following table presents the gains (losses) on the Company's fair value hedges and hedged item for the three months ended March 31, 2016 and 2015, respectively:

		For the Three Months Ended March 31, 2016
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	7	$	(7	)	$	—
	Total	$	7	$	(7	)	$	—

		For the Three Months Ended March 31, 2015
(Dollars in millions)		Derivative		Hedged Item			Hedge Ineffectiveness
Interest rate risk on long-term debt		$	5	$	(4	)	$	1
	Total	$	5	$	(4	)	$	1

Gain or (Loss) Recognized in Income on Derivative Instruments

The following table presents the amount of the net gains and losses for derivative instruments classified as trading reported in the consolidated statements of income under the heading trading account activities for the three months ended March 31, 2016 and 2015:

	Gain or (Loss) Recognized in Income on Derivative Instruments
	For the Three Months Ended
(Dollars in millions)	March 31, 2016		March 31, 2015
Trading derivatives:
Interest rate contracts	$	2	$	(2	)
Foreign exchange contracts	9		6
Commodity contracts	—		1
Total	$	11	$	5

Summary of Offsetting Assets and Liabilities

The following tables present the offsetting of financial assets and liabilities as of March 31, 2016 and December 31, 2015:

	March 31, 2016
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	2,339	$	1,042	$	1,297	$	55	$	2	$	1,240
Securities purchased under resale agreements	29		—		29		28		—		1
Total	$	2,368	$	1,042	$	1,326	$	83	$	2	$	1,241
Financial Liabilities:
Derivative liabilities	$	1,996	$	1,266	$	730	$	229	$	1	$	500
Securities sold under repurchase agreements	2		—		2		2		—		—
Total	$	1,998	$	1,266	$	732	$	231	$	1	$	500

	December 31, 2015
							Gross Amounts Not Offset in Balance Sheet
(Dollars in millions)	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Financial Instruments		Cash Collateral Received/Pledged		Net Amount
Financial Assets:
Derivative assets	$	1,828	$	909	$	919	$	60	$	—	$	859
Securities purchased under resale agreements	24		—		24		24		—		—
Total	$	1,852	$	909	$	943	$	84	$	—	$	859
Financial Liabilities:
Derivative liabilities	$	1,647	$	872	$	775	$	180	$	—	$	595
Securities sold under repurchase agreements	36		—		36		36		—		—
Total	$	1,683	$	872	$	811	$	216	$	—	$	595

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Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

The following tables present the change in each of the components of accumulated other comprehensive income and the related tax effect of the change allocated to each component for the three months ended March 31, 2016 and 2015:

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2016
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	266		$	(105	)	$	161
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(43		)	17			(26		)
Net change	223			(88		)	135
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	158			(62		)	96
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(13		)	5			(8		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	150			(59		)	91
Foreign currency translation adjustment	7			(3		)	4
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	3			(3		)
Recognized net actuarial (gain) loss(1)	22			(9		)	13
Net change(1)	16			(6		)	10
Other	(2		)	1			(1		)
Net change in AOCI	$	394		$	(155	)	$	239

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

(Dollars in millions)	Before Tax Amount			Tax Effect			Net of Tax
For the Three Months Ended March 31, 2015
Cash flow hedge activities:
Unrealized net gains (losses) on hedges arising during the period	$	119		$	(47	)	$	72
Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt	(33		)	13			(20		)
Net change	86			(34		)	52
Securities:
Unrealized holding gains (losses) arising during the period on securities available for sale	120			(47		)	73
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net	(3		)	1			(2		)
Accretion of fair value adjustment on securities available for sale	(2		)	1			(1		)
Amortization of net unrealized (gains) losses on held to maturity securities	5			(2		)	3
Net change	120			(47		)	73
Foreign currency translation adjustment	(12		)	5			(7		)
Pension and other benefits:
Amortization of prior service credit (1)	(6		)	2			(4		)
Recognized net actuarial (gain) loss(1)	29			(11		)	18
Net change(1)	23			(9		)	14
Net change in AOCI	$	217		$	(85	)	$	132

(1) These amounts are included in the computation of net periodic pension cost. For further information, see Note 11 to these consolidated financial statements.

Change in Accumulated Other Comprehensive Loss Balances

The following table presents the change in accumulated other comprehensive income balances:

For the Three Months Ended March 31, 2015 and 2016:
	Net Unrealized Gains (Losses) on Cash Flow Hedges			Net Unrealized Gains (Losses) on Securities			Foreign Currency Translation Adjustment			Pension and Other Postretirement Benefits Adjustment			Other			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance, December 31, 2014	$	21		$	(145	)	$	(10	)	$	(595	)	$	—		$	(729	)
Other comprehensive income (loss) before reclassifications	72			75			(7		)	—			—			140
Amounts reclassified from AOCI	(20		)	(2		)	—			14			—			(8		)
Balance, March 31, 2015	$	73		$	(72	)	$	(17	)	$	(581	)	$	—		$	(597	)
Balance, December 31, 2015	$	36		$	(151	)	$	(25	)	$	(612	)	$	—		$	(752	)
Other comprehensive income (loss) before reclassifications	161			99			4			—			(1		)	263
Amounts reclassified from AOCI	(26		)	(8		)	—			10			—			(24		)
Balance, March 31, 2016	$	171		$	(60	)	$	(21	)	$	(602	)	$	(1	)	$	(513	)

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Employee Pension and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The following table summarizes the components of net periodic benefit cost for the three months ended March 31, 2016 and 2015.

	Pension Benefits						Other Postretirement Benefits						Superannuation, SERP and ESBP
	For the Three Months Ended   March 31,						For the Three Months Ended   March 31,						For the Three Months Ended   March 31,
(Dollars in millions)	2016			2015			2016			2015			2016		2015
Components of net periodic benefit cost:
Service cost	$	23		$	25		$	2		$	2		$	1	$	—
Interest cost	26			27			3			3			—		—
Expected return on plan assets	(60		)	(54		)	(5		)	(5		)	—		—
Amortization of prior service credit	(4		)	(4		)	(2		)	(2		)	—		—
Recognized net actuarial loss	19			27			2			1			1		1
Total net periodic benefit cost	$	4		$	21		$	—		$	(1	)	$	2	$	1

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Commitments, Contingencies and Guarantees (Tables)

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Summary of Commitments

The following table summarizes the Company's commitments:

(Dollars in millions)	March 31, 2016
Commitments to extend credit	$	35,864
Issued standby and commercial letters of credit	$	5,796
Other commitments	$	115

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Business Segments (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Schedule of reportable business segments

As of and for the Three Months Ended March 31, 2016:
(Dollars in millions)	Regional Bank			U.S. Wholesale Banking			Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	482		$	108		$	121	$	59		$	27		$	(100	)	$	697
Noninterest income (expense)	114			28			46		25			232			(50		)	395
Total revenue	596			136			167		84			259			(150		)	1,092
Noninterest expense	399			37			111		35			342			(48		)	876
(Reversal of) provision for credit losses	(2		)	126			2		31			5			—			162
Income (loss) before income taxes and including noncontrolling interests	199			(27		)	54		18			(88		)	(102		)	54
Income tax expense (benefit)	61			(11		)	21		(12		)	(2		)	(40		)	17
Net income (loss) including noncontrolling interests	138			(16		)	33		30			(86		)	(62		)	37
Deduct: net loss from noncontrolling interests	—			—			—		—			12			—			12
Net income (loss) attributable to MUAH	$	138		$	(16	)	$	33	$	30		$	(74	)	$	(62	)	$	49
Total assets, end of period	$	62,322		$	15,039		$	2,524	$	11,971		$	31,197		$	(2,144	)	$	120,909

As of and for the Three Months Ended March 31, 2015:
(Dollars in millions)	Regional Bank		U.S. Wholesale Banking		Transaction Banking		Investment Banking & Markets			Other			Reconciling Items			MUFG Americas Holdings Corporation
Results of operations - Market View
Net interest income (expense)	$	479	$	100	$	115	$	60		$	20		$	(91	)	$	683
Noninterest income (expense)	111		32		43		31			166			(48		)	335
Total revenue	590		132		158		91			186			(139		)	1,018
Noninterest expense	425		43		100		30			296			(45		)	849
(Reversal of) provision for credit losses	6		2		1		(7		)	3			(2		)	3
Income (loss) before income taxes and including noncontrolling interests	159		87		57		68			(113		)	(92		)	166
Income tax expense (benefit)	45		34		22		13			(44		)	(36		)	34
Net income (loss) including noncontrolling interests	114		53		35		55			(69		)	(56		)	132
Deduct: net loss from noncontrolling interests	—		—		—		—			5			—			5
Net income (loss) attributable to MUAH	$	114	$	53	$	35	$	55		$	(64	)	$	(56	)	$	137
Total assets, end of period	$	62,224	$	13,263	$	1,624	$	11,149		$	27,606		$	(2,168	)	$	113,698

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Summary of Significant Accounting Policies, Nature of Operations and Other Developments Summary of Significant Accounting Policies, Nature of Operations and Other Developments(Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Depreciation, amortization and accretion, net	$ 80	$ 111
Payments for Origination and Purchases of Loans Held-for-sale	(519)	(362)
Net proceeds from sale of loans originated for sale	514	291
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	258	168
Proceeds from sales of loans	34	36
Payments for (Proceeds from) Loans and Leases	(1,620)	(91)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(723)	(673)
Net cash provided by (used in) financing activities	4,260	(632)
Cash and Cash Equivalents, Period Increase (Decrease)	3,795	$ (1,137)
Transfer of Portfolio Loans and Leases to Held-for-sale	$ (81)

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Summary of Significant Accounting Policies, Nature of Operations and Other Developments- Changes in Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets	$ 5,322		$ 5,387	$ 4,640
Other liabilities	2,203		2,017	1,891
Retained earnings			8,836	8,265
Other	98	$ 74
Income before income taxes and including noncontrolling interests	54	166
Income tax expense	17	34
Net Income Attributable to MUAH	$ 49	$ 137
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets			5,377	4,630
Other liabilities			2,023	1,897
Retained earnings			$ 8,854	$ 8,283

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Correction of Prior Period Amounts Correction of Prior Period Amounts (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Other assets	$ 5,322	$ 5,387		$ 4,640
Other Liabilities	2,203	2,017		1,891
Retained earnings		8,836		8,265
Total equity	15,969	15,676	$ 15,432	15,168
Stockholders' Equity Attributable to Noncontrolling Interest	$ 211	215		264
Scenario, Adjustment [Member]
Other assets		10		10
Other Liabilities		(6)		(6)
Retained earnings		(18)		(18)
Total equity		34		34
Scenario, Previously Reported [Member]
Other assets		5,377		4,630
Other Liabilities		2,023		1,897
Retained earnings		8,854		8,283
Total equity		$ 181		$ 230

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Securities (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Securities available for sale
Amortized Cost	$ 12,993	$ 14,470
Gross Unrealized Gains	94	57
Gross Unrealized Losses	76	183
Fair Value	13,011	14,344
U.S. Treasury
Securities available for sale
Amortized Cost	148	596
Gross Unrealized Gains	4	1
Gross Unrealized Losses	0	3
Fair Value	152	594
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities available for sale
Amortized Cost	6,302	7,298
Gross Unrealized Gains	16	1
Gross Unrealized Losses	10	98
Fair Value	6,308	7,201
Residential mortgage-backed securities, Privately issued
Securities available for sale
Amortized Cost	202	150
Gross Unrealized Gains	2	2
Gross Unrealized Losses	1	1
Fair Value	203	151
Privately issued - commercial mortgage-backed securities
Securities available for sale
Amortized Cost	1,469	1,566
Gross Unrealized Gains	24	5
Gross Unrealized Losses	1	25
Fair Value	1,492	1,546
Collateralized loan obligations
Securities available for sale
Amortized Cost	3,267	3,266
Gross Unrealized Gains	0	1
Gross Unrealized Losses	40	34
Fair Value	3,227	3,233
Other Asset Liability Management Securities
Securities available for sale
Amortized Cost	7	7
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	7	7
Asset Liability Management securities
Securities available for sale
Amortized Cost	11,395	12,883
Gross Unrealized Gains	46	10
Gross Unrealized Losses	52	161
Fair Value	11,389	12,732
Other debt securities, Direct bank purchase bonds
Securities available for sale
Amortized Cost	1,560	1,549
Gross Unrealized Gains	45	45
Gross Unrealized Losses	24	22
Fair Value	1,581	1,572
Other debt securities, Other
Securities available for sale
Amortized Cost	32	32
Gross Unrealized Gains	1	0
Gross Unrealized Losses	0	0
Fair Value	33	32
Equity securities
Securities available for sale
Amortized Cost	6	6
Gross Unrealized Gains	2	2
Gross Unrealized Losses	0	0
Fair Value	$ 8	$ 8

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Securities (Details 2) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	$ 2,784	$ 7,836
Securities available for sale, Less than 12 months, Unrealized Losses	25	99
Securities available for sale, 12 months or more, Fair Value	4,124	4,362
Securities available for sale, 12 months or more, Unrealized Losses	51	84
Securities available for sale, Fair Value, Total	6,908	12,198
Securities available for sale, Unrealized Losses, Total	76	183
US Treasury Securities
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value		295
Securities available for sale, Less than 12 months, Unrealized Losses		3
Securities available for sale, 12 months or more, Fair Value		0
Securities available for sale, 12 months or more, Unrealized Losses		0
Securities available for sale, Fair Value, Total		295
Securities available for sale, Unrealized Losses, Total		3
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	649	4,692
Securities available for sale, Less than 12 months, Unrealized Losses	3	57
Securities available for sale, 12 months or more, Fair Value	2,006	2,278
Securities available for sale, 12 months or more, Unrealized Losses	7	41
Securities available for sale, Fair Value, Total	2,655	6,970
Securities available for sale, Unrealized Losses, Total	10	98
Residential mortgage-backed securities, Privately issued
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	15	39
Securities available for sale, Less than 12 months, Unrealized Losses	0	0
Securities available for sale, 12 months or more, Fair Value	35	38
Securities available for sale, 12 months or more, Unrealized Losses	1	1
Securities available for sale, Fair Value, Total	50	77
Securities available for sale, Unrealized Losses, Total	1	1
Privately issued - commercial mortgage-backed securities
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	119	1,154
Securities available for sale, Less than 12 months, Unrealized Losses	0	24
Securities available for sale, 12 months or more, Fair Value	82	65
Securities available for sale, 12 months or more, Unrealized Losses	1	1
Securities available for sale, Fair Value, Total	201	1,219
Securities available for sale, Unrealized Losses, Total	1	25
Collateralized loan obligations
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	1,765	1,497
Securities available for sale, Less than 12 months, Unrealized Losses	14	11
Securities available for sale, 12 months or more, Fair Value	1,340	1,290
Securities available for sale, 12 months or more, Unrealized Losses	26	23
Securities available for sale, Fair Value, Total	3,105	2,787
Securities available for sale, Unrealized Losses, Total	40	34
Asset-backed and other
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	0
Securities available for sale, Less than 12 months, Unrealized Losses	0
Securities available for sale, 12 months or more, Fair Value	1
Securities available for sale, 12 months or more, Unrealized Losses	0
Securities available for sale, Fair Value, Total	1
Securities available for sale, Unrealized Losses, Total	0
Asset Liability Management securities
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	2,548	7,677
Securities available for sale, Less than 12 months, Unrealized Losses	17	95
Securities available for sale, 12 months or more, Fair Value	3,464	3,671
Securities available for sale, 12 months or more, Unrealized Losses	35	66
Securities available for sale, Fair Value, Total	6,012	11,348
Securities available for sale, Unrealized Losses, Total	52	161
Other debt securities, Direct bank purchase bonds
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	236	157
Securities available for sale, Less than 12 months, Unrealized Losses	8	4
Securities available for sale, 12 months or more, Fair Value	655	686
Securities available for sale, 12 months or more, Unrealized Losses	16	18
Securities available for sale, Fair Value, Total	891	843
Securities available for sale, Unrealized Losses, Total	24	22
Other debt securities, Other
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value		2
Securities available for sale, Less than 12 months, Unrealized Losses		0
Securities available for sale, 12 months or more, Fair Value		0
Securities available for sale, 12 months or more, Unrealized Losses		0
Securities available for sale, Fair Value, Total		2
Securities available for sale, Unrealized Losses, Total		0
Equity securities
Securities available for sale
Securities available for sale, Less than 12 months, Fair Value	0	0
Securities available for sale, Less than 12 months, Unrealized Losses	0	0
Securities available for sale, 12 months or more, Fair Value	5	5
Securities available for sale, 12 months or more, Unrealized Losses	0	0
Securities available for sale, Fair Value, Total	5	5
Securities available for sale, Unrealized Losses, Total	$ 0	$ 0

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Securities (Details 3) $ in Millions	Mar. 31, 2016 USD ($)
Securities available for sale
One Year or Less	$ 67
Over One Year Through Five Years	385
Over Five Years Through Ten Years	3,122
Over Ten Years	9,429
Total Fair Value	13,003
U.S. Treasury
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	0
Over Five Years Through Ten Years	152
Over Ten Years	0
Total Fair Value	152
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	17
Over Five Years Through Ten Years	372
Over Ten Years	5,919
Total Fair Value	6,308
Residential mortgage-backed securities, Privately issued
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	3
Over Five Years Through Ten Years	0
Over Ten Years	200
Total Fair Value	203
Privately issued - commercial mortgage-backed securities
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	0
Over Five Years Through Ten Years	37
Over Ten Years	1,455
Total Fair Value	1,492
Collateralized loan obligations
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	16
Over Five Years Through Ten Years	1,858
Over Ten Years	1,353
Total Fair Value	3,227
Other Asset Liability Management Securities
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	2
Over Five Years Through Ten Years	5
Over Ten Years	0
Total Fair Value	7
Asset Liability Management securities
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	38
Over Five Years Through Ten Years	2,424
Over Ten Years	8,927
Total Fair Value	11,389
Other debt securities, Direct bank purchase bonds
Securities available for sale
One Year or Less	67
Over One Year Through Five Years	346
Over Five Years Through Ten Years	698
Over Ten Years	470
Total Fair Value	1,581
Other debt securities, Other
Securities available for sale
One Year or Less	0
Over One Year Through Five Years	1
Over Five Years Through Ten Years	0
Over Ten Years	32
Total Fair Value	$ 33

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Securities (Details 4) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 1,658	$ 324
Gross realized gains	13	5
Gross realized losses	$ 0	$ 0

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Securities (Details 5) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Securities held to maturity
Securities held to maturity, Amortized Cost	$ 10,722	$ 10,280
Securities held to maturity, Gross Unrealized Gains, Recognized in Other Comprehensive Income (OCI)	4	4
Securities held to maturity, gross unrealized losses, recognized in other comprehensive income (OCI)	121	126
Total securities held to maturity, carrying amount	10,605	10,158
Securities held to maturity, Gross Unrealized Gains, Not Recognized in OCI	248	99
Securities held to maturity, Gross Unrealized Losses, Not Recognized in OCI	5	50
Total securities held to maturity, Fair Value	10,848	10,207
US Treasury Securities
Securities held to maturity
Securities held to maturity, Amortized Cost	490	489
Securities held to maturity, Gross Unrealized Gains, Recognized in Other Comprehensive Income (OCI)	0	0
Securities held to maturity, gross unrealized losses, recognized in other comprehensive income (OCI)	0	0
Total securities held to maturity, carrying amount	490	489
Securities held to maturity, Gross Unrealized Gains, Not Recognized in OCI	12	(4)
Securities held to maturity, Gross Unrealized Losses, Not Recognized in OCI	0	0
Total securities held to maturity, Fair Value	502	493
US Government Agencies Debt Securities
Securities held to maturity
Securities held to maturity, Amortized Cost	200	220
Securities held to maturity, Gross Unrealized Gains, Recognized in Other Comprehensive Income (OCI)	0	0
Securities held to maturity, gross unrealized losses, recognized in other comprehensive income (OCI)	0	0
Total securities held to maturity, carrying amount	200	220
Securities held to maturity, Gross Unrealized Gains, Not Recognized in OCI	0	0
Securities held to maturity, Gross Unrealized Losses, Not Recognized in OCI	0	(4)
Total securities held to maturity, Fair Value	200	216
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities held to maturity
Securities held to maturity, Amortized Cost	8,301	7,831
Securities held to maturity, Gross Unrealized Gains, Recognized in Other Comprehensive Income (OCI)	4	4
Securities held to maturity, gross unrealized losses, recognized in other comprehensive income (OCI)	51	53
Total securities held to maturity, carrying amount	8,254	7,782
Securities held to maturity, Gross Unrealized Gains, Not Recognized in OCI	(154)	(49)
Securities held to maturity, Gross Unrealized Losses, Not Recognized in OCI	(5)	(41)
Total securities held to maturity, Fair Value	8,403	7,790
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities
Securities held to maturity
Securities held to maturity, Gross Unrealized Gains, Recognized in Other Comprehensive Income (OCI)	0	0
Securities held to maturity, gross unrealized losses, recognized in other comprehensive income (OCI)	70	73
Total securities held to maturity, carrying amount	1,661	1,667
Securities held to maturity, Gross Unrealized Gains, Not Recognized in OCI	(82)	(46)
Securities held to maturity, Gross Unrealized Losses, Not Recognized in OCI	0	(5)
Total securities held to maturity, Fair Value	1,743	1,708
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	$ 1,731	$ 1,740

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Securities (Details 6) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Securities held to maturity
Less than 12 months, Fair Value	$ 543	$ 3,690
Less than 12 months, Unrealized Losses, Recognized in OCI	0	0
Less than 12 months, Unrealized Losses, Not Recognized in OCI	4	44
12 months or more, Fair Value	3,295	3,133
12 months or more, Unrealized Losses, Recognized in OCI	121	126
12 months or more, Unrealized Losses, Not Recognized in OCI	1	6
Total, Fair Value	3,838	6,823
Total, Unrealized Losses, Recognized in OCI	121	126
Total, Unrealized Losses, Not Recognized in OCI	(5)	(50)
US Treasury Securities
Securities held to maturity
Total, Unrealized Losses, Recognized in OCI	0	0
Total, Unrealized Losses, Not Recognized in OCI	0	0
U.S. government sponsored agencies
Securities held to maturity
Less than 12 months, Fair Value		196
Less than 12 months, Unrealized Losses, Recognized in OCI		0
Less than 12 months, Unrealized Losses, Not Recognized in OCI		4
12 months or more, Fair Value		0
12 months or more, Unrealized Losses, Recognized in OCI		0
12 months or more, Unrealized Losses, Not Recognized in OCI		0
Total, Fair Value		196
Total, Unrealized Losses, Recognized in OCI	0	0
Total, Unrealized Losses, Not Recognized in OCI	0	4
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities held to maturity
Less than 12 months, Fair Value	451	3,297
Less than 12 months, Unrealized Losses, Recognized in OCI	0	0
Less than 12 months, Unrealized Losses, Not Recognized in OCI	4	39
12 months or more, Fair Value	1,832	1,705
12 months or more, Unrealized Losses, Recognized in OCI	51	53
12 months or more, Unrealized Losses, Not Recognized in OCI	1	2
Total, Fair Value	2,283	5,002
Total, Unrealized Losses, Recognized in OCI	51	53
Total, Unrealized Losses, Not Recognized in OCI	5	41
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities
Securities held to maturity
Total, Fair Value	1,555	1,625
Total, Unrealized Losses, Recognized in OCI	70	73
Total, Unrealized Losses, Not Recognized in OCI	0	5
Commercial Mortgage Backed Securities [Member]
Securities held to maturity
Less than 12 months, Fair Value	92	197
Less than 12 months, Unrealized Losses, Recognized in OCI	0	0
Less than 12 months, Unrealized Losses, Not Recognized in OCI	0	1
12 months or more, Fair Value	1,463	1,428
12 months or more, Unrealized Losses, Recognized in OCI	70	73
12 months or more, Unrealized Losses, Not Recognized in OCI	$ 0	$ 4

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Securities (Details 7) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Securities held to maturity
Over One Year Through Five Years, Carrying Amount	$ 539
Over One Year Through Five Years, Fair Value	553
Over Five Years Through Ten Years, Carrying Amount	1,093
Over Five Years Through Ten Years, Fair Value	1,157
Over Ten Years, Carrying Amount	8,973
Over Ten Years, Fair Value	9,138
Total securities held to maturity, carrying amount	10,605	$ 10,158
Total securities held to maturity, Fair Value	10,848	10,207
U.S. Treasury
Securities held to maturity
Over One Year Through Five Years, Carrying Amount	490
Over One Year Through Five Years, Fair Value	502
Over Five Years Through Ten Years, Carrying Amount	0
Over Five Years Through Ten Years, Fair Value	0
Over Ten Years, Carrying Amount	0
Over Ten Years, Fair Value	0
Total securities held to maturity, carrying amount	490	489
Total securities held to maturity, Fair Value	502	493
U.S. government sponsored agencies
Securities held to maturity
Over One Year Through Five Years, Carrying Amount	0
Over One Year Through Five Years, Fair Value	0
Over Five Years Through Ten Years, Carrying Amount	200
Over Five Years Through Ten Years, Fair Value	200
Over Ten Years, Carrying Amount	0
Over Ten Years, Fair Value	0
Total securities held to maturity, carrying amount	200	220
Total securities held to maturity, Fair Value	200	216
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Securities held to maturity
Over One Year Through Five Years, Carrying Amount	0
Over One Year Through Five Years, Fair Value	0
Over Five Years Through Ten Years, Carrying Amount	92
Over Five Years Through Ten Years, Fair Value	94
Over Ten Years, Carrying Amount	8,162
Over Ten Years, Fair Value	8,309
Total securities held to maturity, carrying amount	8,254	7,782
Total securities held to maturity, Fair Value	8,403	7,790
U.S. government agency and government-sponsored agencies - commercial mortgage-backed securities
Securities held to maturity
Over One Year Through Five Years, Carrying Amount	49
Over One Year Through Five Years, Fair Value	51
Over Five Years Through Ten Years, Carrying Amount	801
Over Five Years Through Ten Years, Fair Value	863
Over Ten Years, Carrying Amount	811
Over Ten Years, Fair Value	829
Total securities held to maturity, carrying amount	1,661	1,667
Total securities held to maturity, Fair Value	$ 1,743	$ 1,708

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Securities (Details 8) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Securities Pledged as Collateral
Financial Instruments, Owned and Pledged as Collateral, at Fair Value	$ 900
Public and trust deposits
Securities Pledged as Collateral
Permitted by contract to sell or repledge	$ 28	$ 24

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Loans and Allowance for Loan Losses (Details) - USD ($) $ in Millions	Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Loans disclosures
Loans excluding purchased credit-impaired loans	$ 78,995		$ 77,263
Purchased credit-impaired loans	304		336
Loans held for investment	79,299	[1]	77,599
Allowance for loan losses	(879)		(721)	$ (530)	$ (537)
Loans held for investment, net	78,420		76,878
Loans covered under a loss share agreement with FDIC	16		19
Net unamortized discounts and premiums and deferred fees and costs	109		100
Commercial portfolio
Loans disclosures
Loans excluding purchased credit-impaired loans	48,115		46,668
Loans held for investment	48,115		46,668
Allowance for loan losses	(822)		(651)	(459)	(465)
Commercial portfolio | Commercial and industrial
Loans disclosures
Loans excluding purchased credit-impaired loans	30,212		29,730
Commercial portfolio | Commercial mortgage
Loans disclosures
Loans excluding purchased credit-impaired loans	14,920		13,904
Commercial portfolio | Construction
Loans disclosures
Loans excluding purchased credit-impaired loans	2,251		2,297
Commercial portfolio | Lease financing
Loans disclosures
Loans excluding purchased credit-impaired loans	732		737
Consumer portfolio
Loans disclosures
Loans excluding purchased credit-impaired loans	30,880		30,595
Loans held for investment	30,880		30,595
Allowance for loan losses	(57)		(49)	$ (48)	$ (49)
Consumer portfolio | Residential mortgage
Loans disclosures
Loans excluding purchased credit-impaired loans	27,495		27,344
Consumer portfolio | Home equity and other consumer loans
Loans disclosures
Loans excluding purchased credit-impaired loans	$ 3,385		$ 3,251

[1] Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

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Loans and Allowance for Loan Losses (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses
Allowance for loan losses, beginning of period	$ 721	$ 537
(Reversal of) provision for loan losses	(158)	3
Other	4	(1)
Loans charged-off	(9)	(7)
Recoveries of loans previously charged-off	5	4
Allowance for loan losses, end of period	879	530
Commercial portfolio
Financing Receivable, Allowance for Credit Losses
Allowance for loan losses, beginning of period	651	465
(Reversal of) provision for loan losses	(171)	5
Other	4	(1)
Loans charged-off	(8)	(4)
Recoveries of loans previously charged-off	4	4
Allowance for loan losses, end of period	822	459
Consumer portfolio
Financing Receivable, Allowance for Credit Losses
Allowance for loan losses, beginning of period	49	49
(Reversal of) provision for loan losses	(8)	(2)
Other	0	0
Loans charged-off	(1)	(3)
Recoveries of loans previously charged-off	1	0
Allowance for loan losses, end of period	57	48
Purchased credit-impaired loans
Financing Receivable, Allowance for Credit Losses
Allowance for loan losses, beginning of period	1	3
(Reversal of) provision for loan losses	1	0
Other	0	0
Loans charged-off	0	0
Recoveries of loans previously charged-off	0	0
Allowance for loan losses, end of period	0	3
Unallocated portfolio
Financing Receivable, Allowance for Credit Losses
Allowance for loan losses, beginning of period	20	20
(Reversal of) provision for loan losses	20	0
Other	0	0
Loans charged-off	0	0
Recoveries of loans previously charged-off	0	0
Allowance for loan losses, end of period	$ 0	$ 20

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Loans and Allowance for Loan Losses (Details 3) - USD ($) $ in Millions	Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Loan losses allowance
Individually evaluated for impairment			$ 114
Collectively evaluated for impairment	$ 601		606
Purchased credit-impaired loans			1
Total allowance for loan losses	879		721	$ 530	$ 537
Loans held for investment:
Individually evaluated for impairment	1,054		833
Collectively evaluated for impairment	77,942		76,431
Purchased credit-impaired loans	303		335
Loans held for investment	79,299	[1]	77,599
Commercial portfolio
Loan losses allowance
Individually evaluated for impairment			101
Collectively evaluated for impairment	557		550
Purchased credit-impaired loans			0
Total allowance for loan losses	822		651	459	465
Loans held for investment:
Individually evaluated for impairment	752		525
Collectively evaluated for impairment	47,363		46,143
Purchased credit-impaired loans	0		0
Loans held for investment	48,115		46,668
Consumer portfolio
Loan losses allowance
Individually evaluated for impairment			13
Collectively evaluated for impairment	44		36
Purchased credit-impaired loans			0
Total allowance for loan losses	57		49	48	49
Loans held for investment:
Individually evaluated for impairment	301		307
Collectively evaluated for impairment	30,579		30,288
Purchased credit-impaired loans	0		0
Loans held for investment	30,880		30,595
Purchased credit-impaired loans
Loan losses allowance
Individually evaluated for impairment			0
Collectively evaluated for impairment	0		0
Purchased credit-impaired loans			1
Total allowance for loan losses	0		1	3	3
Loans held for investment:
Individually evaluated for impairment	1		1
Collectively evaluated for impairment	0		0
Purchased credit-impaired loans	303		335
Loans held for investment	304		336
Unallocated portfolio
Loan losses allowance
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	0		20
Purchased credit-impaired loans			0
Total allowance for loan losses	0		20	$ 20	$ 20
Loans held for investment:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	0		0
Purchased credit-impaired loans	0		0
Loans held for investment	$ 0		$ 0

[1] Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

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Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Nonaccrual loans
Nonaccrual loans, before purchased credit-impaired loans	$ 950	$ 546
Nonaccrual loans	956	552
Troubled debt restructured loans that continue to accrue interest	229	413
Troubled debt restructured nonaccrual loans (included in the total nonaccrual loans above)	598	409
Commercial portfolio
Nonaccrual loans
Nonaccrual loans	732	321
Commercial portfolio | Commercial and industrial
Nonaccrual loans
Nonaccrual loans	702	284
Commercial portfolio | Commercial mortgage
Nonaccrual loans
Nonaccrual loans	30	37
Consumer portfolio
Nonaccrual loans
Nonaccrual loans	218	225
Consumer portfolio | Residential mortgage
Nonaccrual loans
Nonaccrual loans	186	190
Consumer portfolio | Home equity and other consumer loans
Nonaccrual loans
Nonaccrual loans	32	35
Purchased credit-impaired loans
Nonaccrual loans
Nonaccrual loans	$ 6	$ 6

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Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Aging of loans
Current	$ 78,726	$ 77,049
30 to 89 Days Past Due	193	143
Total loans 90 days or more past due and still accruing	76	71
Total Past Due	269	214
Total loans held for investment, before purchased credit-impaired loans	78,995	77,263
Commercial portfolio
Aging of loans
Current	48,006	46,618
30 to 89 Days Past Due	90	37
Total loans 90 days or more past due and still accruing	19	13
Total Past Due	109	50
Total loans held for investment, before purchased credit-impaired loans	48,115	46,668
Commercial portfolio | Commercial and industrial
Aging of loans
Current	30,869	30,446
30 to 89 Days Past Due	64	15
Total loans 90 days or more past due and still accruing	11	6
Total Past Due	75	21
Total loans held for investment, before purchased credit-impaired loans	30,944	30,467
Commercial portfolio | Commercial mortgage
Aging of loans
Current	14,886	13,880
30 to 89 Days Past Due	26	17
Total loans 90 days or more past due and still accruing	8	7
Total Past Due	34	24
Total loans held for investment, before purchased credit-impaired loans	14,920	13,904
Commercial portfolio | Construction
Aging of loans
Current	2,251	2,292
30 to 89 Days Past Due	0	5
Total loans 90 days or more past due and still accruing	0	0
Total Past Due	0	5
Total loans held for investment, before purchased credit-impaired loans	2,251	2,297
Consumer portfolio
Aging of loans
Current	30,720	30,431
30 to 89 Days Past Due	103	106
Total loans 90 days or more past due and still accruing	57	58
Total Past Due	160	164
Total loans held for investment, before purchased credit-impaired loans	30,880	30,595
Consumer portfolio | Residential mortgage
Aging of loans
Current	27,357	27,206
30 to 89 Days Past Due	90	92
Total loans 90 days or more past due and still accruing	48	46
Total Past Due	138	138
Total loans held for investment, before purchased credit-impaired loans	27,495	27,344
Consumer portfolio | Home equity and other consumer loans
Aging of loans
Current	3,363	3,225
30 to 89 Days Past Due	13	14
Total loans 90 days or more past due and still accruing	9	12
Total Past Due	22	26
Total loans held for investment, before purchased credit-impaired loans	$ 3,385	$ 3,251

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Loans and Allowance for Loan Losses (Details 6) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Aging of loans
Transfer of Portfolio Loans and Leases to Held-for-sale	$ (81)
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	6		$ 2
Loans covered under a loss share agreement with FDIC	16		19
Commercial Loan
Aging of loans
Transfer of Portfolio Loans and Leases to Held-for-sale		$ 80
Loans covered under a loss share agreement with FDIC			1
Total loans	47,972		46,505
Commercial portfolio
Aging of loans
Total loans	47,874		46,392
Commercial portfolio | Commercial and industrial
Aging of loans
Total loans	30,838		30,337
Commercial portfolio | Construction
Aging of loans
Total loans	14,784		2,297
Commercial portfolio | Commercial mortgage
Aging of loans
Total loans	2,252		13,758
Commercial portfolio | Commercial Loan
Aging of loans
Financing Receivable, Significant Sales	34
Financing Receivable, Reclassification to Held-for-sale	81
Purchased credit-impaired loans
Aging of loans
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	28		16
Purchased credit-impaired loans | Commercial Loan
Aging of loans
Total loans	98		113
Pass | Commercial Loan
Aging of loans
Total loans	44,841		43,978
Pass | Commercial portfolio
Aging of loans
Total loans	44,808		43,938
Pass | Commercial portfolio | Commercial and industrial
Aging of loans
Total loans	28,143		28,228
Pass | Commercial portfolio | Construction
Aging of loans
Total loans	14,472		2,240
Pass | Commercial portfolio | Commercial mortgage
Aging of loans
Total loans	2,193		13,470
Pass | Purchased credit-impaired loans | Commercial Loan
Aging of loans
Total loans	33		40
Special Mention | Commercial Loan
Aging of loans
Total loans	1,060		1,052
Special Mention | Commercial portfolio
Aging of loans
Total loans	1,052		1,040
Special Mention | Commercial portfolio | Commercial and industrial
Aging of loans
Total loans	852		844
Special Mention | Commercial portfolio | Construction
Aging of loans
Total loans	141		57
Special Mention | Commercial portfolio | Commercial mortgage
Aging of loans
Total loans	59		139
Special Mention | Purchased credit-impaired loans | Commercial Loan
Aging of loans
Total loans	8		12
Classified | Commercial Loan
Aging of loans
Total loans	2,071		1,475
Classified | Commercial portfolio
Aging of loans
Total loans	2,014		1,414
Classified | Commercial portfolio | Commercial and industrial
Aging of loans
Total loans	1,843		1,265
Classified | Commercial portfolio | Construction
Aging of loans
Total loans	171		0
Classified | Commercial portfolio | Commercial mortgage
Aging of loans
Total loans	0		149
Classified | Purchased credit-impaired loans | Commercial Loan
Aging of loans
Total loans	57		61
Oil and Gas [Member] | Criticized [Member] | Commercial portfolio
Aging of loans
Total loans	$ 1,709		$ 1,226

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Loans and Allowance for Loan Losses (Details 7) - USD ($) $ in Millions	Mar. 31, 2016		Dec. 31, 2015
Consumer portfolio loans
Nonaccrual	$ 956		$ 552
Loans held for investment	79,299	[1]	77,599
Total loans held for investment, before purchased credit-impaired loans	78,995		77,263
Consumer
Consumer portfolio loans
Loans and Leases Receivable, Net Amount	15		18
Accrual	30,801		30,518
Nonaccrual	218		225
Total loans held for investment, before purchased credit-impaired loans	31,019		30,743
Consumer portfolio
Consumer portfolio loans
Accrual	30,662		30,370
Nonaccrual	218		225
Loans held for investment	30,880		30,595
Total loans held for investment, before purchased credit-impaired loans	30,880		30,595
Consumer portfolio | Residential mortgage
Consumer portfolio loans
Accrual	27,309		27,154
Nonaccrual	186		190
Total loans held for investment, before purchased credit-impaired loans	27,495		27,344
Consumer portfolio | Home equity and other consumer loans
Consumer portfolio loans
Accrual	3,353		3,216
Nonaccrual	32		35
Total loans held for investment, before purchased credit-impaired loans	3,385		3,251
Purchased credit-impaired loans
Consumer portfolio loans
Nonaccrual	6		6
Loans held for investment	304		336
Purchased credit-impaired loans | Consumer
Consumer portfolio loans
Accrual	139		148
Nonaccrual	0		0
Total loans held for investment, before purchased credit-impaired loans	$ 139		$ 148

[1] Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

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Loans and Allowance for Loan Losses (Details 8) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Consumer
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		$ 30,723	$ 30,436
Percentage of total		100.00%	100.00%
Consumer | FICO Score 720 and Above
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		$ 23,713	$ 23,545
Percentage of total		77.00%	77.00%
Consumer | FICO Score Below 720
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		$ 6,449	$ 6,306
Percentage of total		21.00%	21.00%
Consumer | No FICO Available
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		$ 561	$ 585	[1]
Percentage of total	[1]	2.00%	2.00%
Consumer portfolio
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		$ 30,584	$ 30,288
Consumer portfolio | FICO Score 720 and Above
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		23,656	23,485
Consumer portfolio | FICO Score Below 720
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		6,378	6,230
Consumer portfolio | No FICO Available
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements	[1]	550	573
Consumer portfolio | Residential mortgage
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		27,260	27,109
Consumer portfolio | Residential mortgage | FICO Score 720 and Above
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		21,311	21,209
Consumer portfolio | Residential mortgage | FICO Score Below 720
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		5,482	5,412
Consumer portfolio | Residential mortgage | No FICO Available
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements	[1]	467	488
Consumer portfolio | Home equity and other consumer loans
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		3,324	3,179
Consumer portfolio | Home equity and other consumer loans | FICO Score 720 and Above
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		2,345	2,276
Consumer portfolio | Home equity and other consumer loans | FICO Score Below 720
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		896	818
Consumer portfolio | Home equity and other consumer loans | No FICO Available
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements	[1]	83	85
Purchased credit-impaired loans | Consumer
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		139	148
Purchased credit-impaired loans | Consumer | FICO Score 720 and Above
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		57	60
Purchased credit-impaired loans | Consumer | FICO Score Below 720
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements		71	76
Purchased credit-impaired loans | Consumer | No FICO Available
Credit quality of consumer loans
Loan balances, excluding loans serviced by third parties and loans covered by FDIC loss share agreements	[1]	$ 11	$ 12

[1] Represents loans for which management was not able to obtain an updated FICO score (e.g., due to recent profile changes).

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Loans and Allowance for Loan Losses (Details 9) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Consumer
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 29,904	$ 29,801
Percentage of total loans categorized by LTV ratio		100.00%	100.00%
Consumer | LTV Ratio Less than or Equal to 80 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 28,614	$ 28,439
Percentage of total loans categorized by LTV ratio		96.00%	95.00%
Consumer | LTV Ratio Greater than 80 Percent and Less than 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 1,001	$ 1,053
Percentage of total loans categorized by LTV ratio		3.00%	4.00%
Consumer | LTV Ratio Greater than or Equal to 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 136	$ 144
Percentage of total loans categorized by LTV ratio		0.00%	0.00%
Consumer | No LTV Available
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 153	$ 165	[1]
Percentage of total loans categorized by LTV ratio		1.00%	1.00%
Consumer portfolio
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 29,766	$ 29,654
Consumer portfolio | LTV Ratio Less than or Equal to 80 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		28,513	28,333
Consumer portfolio | LTV Ratio Greater than 80 Percent and Less than 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		974	1,021
Consumer portfolio | LTV Ratio Greater than or Equal to 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		127	135
Consumer portfolio | No LTV Available
Credit quality of consumer loans
Loans categorized by LTV ratio	[1]	152	165
Consumer portfolio | Residential mortgage
Credit quality of consumer loans
Loans categorized by LTV ratio			27,109
Consumer portfolio | Residential mortgage | LTV Ratio Less than or Equal to 80 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		26,396	26,143
Consumer portfolio | Residential mortgage | LTV Ratio Greater than 80 Percent and Less than 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		764	804
Consumer portfolio | Residential mortgage | LTV Ratio Greater than or Equal to 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		48	52
Consumer portfolio | Residential mortgage | No LTV Available
Credit quality of consumer loans
Loans categorized by LTV ratio	[1]	52	110
Consumer portfolio | Home Equity loans
Credit quality of consumer loans
Loans categorized by LTV ratio		2,506	2,545
Consumer portfolio | Home Equity loans | LTV Ratio Less than or Equal to 80 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		2,117	2,190
Consumer portfolio | Home Equity loans | LTV Ratio Greater than 80 Percent and Less than 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		210	217
Consumer portfolio | Home Equity loans | LTV Ratio Greater than or Equal to 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		79	83
Consumer portfolio | Home Equity loans | No LTV Available
Credit quality of consumer loans
Loans categorized by LTV ratio	[1]	100	55
Purchased credit-impaired loans | Consumer
Credit quality of consumer loans
Loans categorized by LTV ratio		138	147
Purchased credit-impaired loans | Consumer | LTV Ratio Less than or Equal to 80 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		101	106
Purchased credit-impaired loans | Consumer | LTV Ratio Greater than 80 Percent and Less than 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		27	32
Purchased credit-impaired loans | Consumer | LTV Ratio Greater than or Equal to 100 Percent
Credit quality of consumer loans
Loans categorized by LTV ratio		9	9
Purchased credit-impaired loans | Consumer | No LTV Available
Credit quality of consumer loans
Loans categorized by LTV ratio		$ 1	$ 0

[1] Represents loans for which management was not able to obtain refreshed property values.

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Loans and Allowance for Loan Losses (Details 10) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Pre- and Post - modification recorded investments
Commitment to lend additional funds to borrowers with loan modifications classified as TDRs		$ 29	$ 98
Total excluding purchased credit-impaired loans	[1]	827	822
Commercial portfolio
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		526	515
Commercial portfolio | Commercial and industrial
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		509	499
Commercial portfolio | Commercial mortgage
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		17	16
Consumer portfolio
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		301	307
Consumer portfolio | Residential mortgage
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		270	276
Consumer portfolio | Home equity and other consumer loans
Pre- and Post - modification recorded investments
Total excluding purchased credit-impaired loans		$ 31	$ 31

[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmFjNDM2NWM5MjFiYTQzMWQ5ZDk1MGFiNmJhM2RiMzJifFRleHRTZWxlY3Rpb246QjcyRENBODlGMjNFQTFFNDhFNzIzODhDNkUyNUM2ODMM}

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Loans and Allowance for Loan Losses (Details 11) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	$ 60	$ 79
Post-Modification Outstanding Recorded Investment	[2]	60	79
Commercial portfolio
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	55	74
Post-Modification Outstanding Recorded Investment	[2]	55	74
Commercial portfolio | Commercial and industrial
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	50	72
Post-Modification Outstanding Recorded Investment	[2]	50	72
Commercial portfolio | Commercial mortgage
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	5	2
Post-Modification Outstanding Recorded Investment	[2]	5	2
Consumer portfolio
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	5	5
Post-Modification Outstanding Recorded Investment	[2]	5	5
Consumer portfolio | Residential mortgage
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	4	4
Post-Modification Outstanding Recorded Investment	[2]	4	4
Consumer portfolio | Home equity and other consumer loans
Pre- and Post - modification recorded investments
Pre-Modification Outstanding Recorded Investment	[1]	1	1
Post-Modification Outstanding Recorded Investment	[2]	$ 1	$ 1

[1] Represents the recorded investment in the loan immediately prior to the restructuring event.

[2] Represents the recorded investment in the loan immediately following the restructuring event. It includes the effect of paydowns that were required as part of the restructuring terms.

XML

Loans and Allowance for Loan Losses (Details 12) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Troubled debt restructured loans
Minimum defaulting period	60 days
Total troubled debt restructured loans at date of default	$ 3	$ 5
Commercial portfolio
Troubled debt restructured loans
Total troubled debt restructured loans at date of default	1	5
Commercial portfolio | Commercial and industrial
Troubled debt restructured loans
Total troubled debt restructured loans at date of default	1	4
Commercial portfolio | Commercial mortgage
Troubled debt restructured loans
Total troubled debt restructured loans at date of default	0	1
Consumer portfolio
Troubled debt restructured loans
Total troubled debt restructured loans at date of default	2	0
Consumer portfolio | Residential mortgage
Troubled debt restructured loans
Total troubled debt restructured loans at date of default	$ 2	$ 0

XML

Loans and Allowance for Loan Losses (Details 13) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Loan impairment
Recorded investment with an allowance	$ 907	$ 570
Recorded investment without an allowance	147	263
Impaired loans	1,054	833
Allowance for impaired loans	278	114
Unpaid principal balance with an allowance	951	602
Unpaid principal balance without an allowance	176	297
Commercial portfolio
Loan impairment
Recorded investment with an allowance	718	377
Recorded investment without an allowance	34	148
Impaired loans	752	525
Allowance for impaired loans	265	101
Unpaid principal balance with an allowance	746	392
Unpaid principal balance without an allowance	36	153
Commercial portfolio | Commercial and industrial
Loan impairment
Recorded investment with an allowance	704	363
Recorded investment without an allowance	32	142
Impaired loans	736	505
Allowance for impaired loans	264	100
Unpaid principal balance with an allowance	732	377
Unpaid principal balance without an allowance	34	144
Commercial portfolio | Commercial mortgage
Loan impairment
Recorded investment with an allowance	14	14
Recorded investment without an allowance	2	6
Impaired loans	16	20
Allowance for impaired loans	1	1
Unpaid principal balance with an allowance	14	15
Unpaid principal balance without an allowance	2	9
Consumer portfolio
Loan impairment
Recorded investment with an allowance	188	192
Recorded investment without an allowance	113	115
Impaired loans	301	307
Allowance for impaired loans	13	13
Unpaid principal balance with an allowance	204	209
Unpaid principal balance without an allowance	140	144
Consumer portfolio | Residential mortgage
Loan impairment
Recorded investment with an allowance	179	183
Recorded investment without an allowance	91	93
Impaired loans	270	276
Allowance for impaired loans	12	13
Unpaid principal balance with an allowance	194	199
Unpaid principal balance without an allowance	107	109
Consumer portfolio | Home equity and other consumer loans
Loan impairment
Recorded investment with an allowance	9	9
Recorded investment without an allowance	22	22
Impaired loans	31	31
Allowance for impaired loans	1	0
Unpaid principal balance with an allowance	10	10
Unpaid principal balance without an allowance	33	35
Total, excluding purchased credit impaired loans
Loan impairment
Recorded investment with an allowance	906	569
Recorded investment without an allowance	147	263
Impaired loans	1,053	832
Allowance for impaired loans	278	114
Unpaid principal balance with an allowance	950	601
Unpaid principal balance without an allowance	176	297
Purchased credit-impaired loans
Loan impairment
Recorded investment with an allowance	1	1
Recorded investment without an allowance	0	0
Impaired loans	1	1
Allowance for impaired loans	0	0
Unpaid principal balance with an allowance	1	1
Unpaid principal balance without an allowance	$ 0	$ 0

XML

Loans and Allowance for Loan Losses (Details 14) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Loan impairment
Average Recorded Investment	$ 946	$ 521
Recognized Interest Income	5	6
Net transfer of loans held for investment to loans held for sale	(81)
Loan losses allowance
Sale of Loans Held-for-investment	34	36
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	288	269
Total, excluding purchased credit impaired loans
Loan impairment
Average Recorded Investment	945	520
Recognized Interest Income	5	6
Commercial portfolio
Loan impairment
Average Recorded Investment	641	184
Recognized Interest Income	2	2
Commercial portfolio | Commercial and industrial
Loan impairment
Average Recorded Investment	623	149
Recognized Interest Income	2	2
Commercial portfolio | Commercial mortgage
Loan impairment
Average Recorded Investment	18	35
Recognized Interest Income	0	0
Commercial portfolio | Construction
Loan impairment
Average Recorded Investment	0	0
Recognized Interest Income	0	0
Consumer portfolio
Loan impairment
Average Recorded Investment	304	336
Recognized Interest Income	3	4
Consumer portfolio | Residential mortgage
Loan impairment
Average Recorded Investment	273	306
Recognized Interest Income	2	3
Consumer portfolio | Home equity and other consumer loans
Loan impairment
Average Recorded Investment	31	30
Recognized Interest Income	1	1
Purchased credit-impaired loans
Loan impairment
Average Recorded Investment	1	1
Recognized Interest Income	$ 0	$ 0

XML

Variable Interest Entities (Details) $ in Millions	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) investment	Dec. 31, 2014 USD ($)
Consolidated Assets
Interest Bearing Deposits in Banks	$ 6,696	$ 2,749
Loans Held for Investment, net	78,420	76,878
Other assets	5,322	5,387	$ 4,640
Consolidated Liabilities
Other liabilities	2,203	2,017	1,891
Consolidated VIEs
Consolidated Assets
Interest Bearing Deposits in Banks	12	30
Loans Held for Investment, net	585	588
Other assets	328	334
Total assets	925	952
Consolidated Liabilities
Other liabilities	67	59
Total Liabilities	67	59
Consolidated VIEs | Low-income housing credit investments
Consolidated Assets
Interest Bearing Deposits in Banks	8		9
Loans Held for Investment, net	0		0
Other assets	170		178
Total assets	178	187
Consolidated Liabilities
Other liabilities	0	0
Total Liabilities	0	$ 0
Number of LIHC investment fund | investment		2
Consolidated VIEs | Leasing Investments
Consolidated Assets
Interest Bearing Deposits in Banks	4		21
Loans Held for Investment, net	585		588
Other assets	158		$ 156
Total assets	747	$ 765
Consolidated Liabilities
Other liabilities	67	59
Total Liabilities	$ 67	$ 59

XML

Variable Interest Entities (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2016
Variable Interest Entities
Interest bearing deposits in banks	$ 2,749		$ 6,696
Unconsolidated Assets
Securities available for sale	14,344		13,011
Loans Held for Investment	77,599		79,299	[1]
Other Assets	5,387	$ 4,640	5,322
Unconsolidated Liabilities
Other liabilities	2,017	1,891	2,203
Unconsolidated VIEs
Variable Interest Entities
Interest bearing deposits in banks	5		5
Unconsolidated Assets
Securities available for sale	25		25
Loans Held for Investment	289		244
Other Assets	2,376		2,390
Total Assets	2,695		2,664
Unconsolidated Liabilities
Other liabilities	485		481
Total Liabilities	485		481
Maximum Exposure to Loss	2,716		2,710
Unconsolidated VIEs | LIHC investments
Variable Interest Entities
Interest bearing deposits in banks	0		0
Liabilities Assumed	37	$ 32
Unconsolidated Assets
Securities available for sale	25		25
Loans Held for Investment	220		190
Other Assets	1,166		1,169
Total Assets	1,411		1,384
Unconsolidated Liabilities
Other liabilities	424		420
Total Liabilities	424		420
Maximum Exposure to Loss	1,411		1,384
Unconsolidated VIEs | Leasing Investments
Variable Interest Entities
Interest bearing deposits in banks	5		5
Unconsolidated Assets
Securities available for sale	0		0
Loans Held for Investment	20		20
Other Assets	1,200		1,194
Total Assets	1,225		1,219
Unconsolidated Liabilities
Other liabilities	61		61
Total Liabilities	61		61
Maximum Exposure to Loss	1,245		1,240
Unconsolidated VIEs | Other investments
Variable Interest Entities
Interest bearing deposits in banks	0		0
Unconsolidated Assets
Securities available for sale	0		0
Loans Held for Investment	49		34
Other Assets	10		27
Total Assets	59		61
Unconsolidated Liabilities
Other liabilities	0		0
Total Liabilities	0		0
Maximum Exposure to Loss	$ 60		$ 86

[1] Includes $109 million and $100 million at March 31, 2016 and December 31, 2015, respectively, for net unamortized (discounts) and premiums and deferred (fees) and costs.

XML

Variable Interest Entities Variable Interest Entities (Details 3) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Non Interest Expenses
Noncontrolling Interest [Line Items]
Income (loss) from LIHC Investments	$ 2	$ 2
Income Tax Expense
Noncontrolling Interest [Line Items]
Amortization of LIHC investments	30	27
Tax credits and other tax benefits from LIHC	$ 45	$ 46

XML

Commercial Paper and Other Short-Term Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Federal funds purchased and securities sold under repurchase agreements, with weighted average interest rates of 0.34% and 0.30% at March 31, 2016 and December 31, 2015, respectively	$ 14	$ 44
Commercial paper, with a weighted average interest rate of 0.35% and 0.23% at March 31, 2016 and December 31, 2015, respectively	633	994
Total commercial paper and other short-term borrowings	$ 647	$ 1,038
Federal Funds Purchased and Securities Sold under Agreements to Repurchase
Short-term Debt [Line Items]
Weighted average interest rate (as a percent), fed funds purchased and securities sold under repurchase agreements	0.34%	0.30%
Commercial Paper
Short-term Debt [Line Items]
Weighted average interest rate (as a percent), fed funds purchased and securities sold under repurchase agreements	0.35%	0.23%
Federal Home Loan Bank Advances
Short-term Debt [Line Items]
Weighted average interest rate (as a percent), fed funds purchased and securities sold under repurchase agreements	0.00%

XML

Long-Term Debt (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Debt Instrument
Long-term debt		$ 11,843	$ 12,349
MUFG Americas Holdings Corporation
Debt Instrument
Long-term debt		2,922	2,932
MUFG Americas Holdings Corporation | Senior debt | Floating Rate Senior Notes due February 2018
Debt Instrument
Long-term Debt	[1]	249	250
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Senior Note 1.625 Percent due February 2018
Debt Instrument
Long-term Debt	[1]	449	450
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Senior Note 3.50 Percent due June 2022
Debt Instrument
Long-term Debt		397	398
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Senior Note 2.25 Percent due February 2022
Debt Instrument
Long-term Debt	[1]	996	1,000
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Senior Note 3.00 Percent due February 2025
Debt Instrument
Long-term Debt	[1]	$ 495	$ 498
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate One Point Six Two Five Percent Notes Due February Two Thousand Eighteen [Member] [Domain] [Domain]
Debt Instrument
Debt instrument, Fixed interest rate (as a percent)		1.625%	1.625%
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Two Point Two Five Percent Notes Due February Two Thousand Twenty [Member] [Domain] [Domain]
Debt Instrument
Debt instrument, Fixed interest rate (as a percent)		2.25%	2.25%
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Three Point Five Zero Percent Notes Due June Two Thousand Twenty Two [Member]
Debt Instrument
Debt instrument, Fixed interest rate (as a percent)		3.50%	3.50%
MUFG Americas Holdings Corporation | Senior debt | Fixed Rate Three Point Zero Percent Notes Due February Two Thousand Twenty Five [Member] [Domain]
Debt Instrument
Debt instrument, Fixed interest rate (as a percent)		3.00%	3.00%
MUFG Americas Holdings Corporation | Subordinated Debt | Floating rate subordinated debt due December 2023
Debt Instrument
Long-term Debt		$ 300	$ 300
Long-term Debt, Weighted Average Interest Rate		2.01%	1.98%
MUFG Americas Holdings Corporation | Subordinated Debt | Floating rate subordinated debt due December 2023 | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		1.38%	1.38%
MUFG Americas Holdings Corporation | Junior subordinated debt payable to trusts | Floating rate
Debt Instrument
Long-term Debt	[2]	$ 36	$ 36
Long-term Debt, Weighted Average Interest Rate		2.33%	2.21%
Union Bank, N.A. and other subsidiaries
Debt Instrument
Long-term debt		$ 8,921	$ 9,417
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Senior Notes due February 2018
Debt Instrument
Long-term Debt, Weighted Average Interest Rate		1.19%	0.91%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Senior Notes due February 2018 | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		0.57%	0.57%
Union Bank, N.A. and other subsidiaries | Senior debt | Federal Home Loan Bank Advances
Debt Instrument
Long-term Debt		$ 0	$ 500
Long-term Debt, Weighted Average Interest Rate		0.00%	2.50%
Union Bank, N.A. and other subsidiaries | Senior debt | Fixed rate 3.00% notes due June 2016
Debt Instrument
Long-term Debt		$ 700	$ 700
Debt instrument, Fixed interest rate (as a percent)		3.00%	3.00%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating rate notes due September 2016
Debt Instrument
Long-term Debt		$ 500	$ 500
Long-term Debt, Weighted Average Interest Rate		1.38%	1.35%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating rate notes due September 2016 | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		0.75%	0.75%
Union Bank, N.A. and other subsidiaries | Senior debt | Fixed rate 2.125% notes due June 2017
Debt Instrument
Long-term Debt		$ 499	$ 499
Debt instrument, Fixed interest rate (as a percent)		2.125%	2.125%
Union Bank, N.A. and other subsidiaries | Senior debt | Fixed rate 2.625% notes due September 2018
Debt Instrument
Long-term Debt		$ 998	$ 1,000
Debt instrument, Fixed interest rate (as a percent)		2.625%	2.625%
Union Bank, N.A. and other subsidiaries | Senior debt | Fixed rate 1.50% notes due September 2016
Debt Instrument
Long-term Debt		$ 500	$ 499
Debt instrument, Fixed interest rate (as a percent)		1.50%	1.50%
Union Bank, N.A. and other subsidiaries | Senior debt | Fixed rate 2.250% notes due May 2019
Debt Instrument
Long-term Debt		$ 509	$ 502
Debt instrument, Fixed interest rate (as a percent)		2.25%	2.25%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating rate notes due May 2017
Debt Instrument
Long-term Debt		$ 250	$ 250
Long-term Debt, Weighted Average Interest Rate		1.02%	0.73%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating rate notes due May 2017 | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		0.40%	0.40%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued August 2015 [Member]
Debt Instrument
Long-term Debt, Weighted Average Interest Rate		1.29%	1.09%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued August 2015 [Member] | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		0.85%	0.85%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued September 2015 [Member]
Debt Instrument
Long-term Debt, Weighted Average Interest Rate		1.31%	1.11%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued September 2015 [Member] | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		0.87%	0.87%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued October 2015 [Member]
Debt Instrument
Long-term Debt, Weighted Average Interest Rate		1.47%	1.27%
Union Bank, N.A. and other subsidiaries | Senior debt | Floating Rate Debt Due January 2018 Issued October 2015 [Member] | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		1.03%	1.03%
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating Rate Debt Due January 2018 Issued August 2015 [Member]
Debt Instrument
Long-term Debt		$ 1,000	$ 1,000
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Fixed rate 5.95% notes due May 2016
Debt Instrument
Long-term Debt		$ 701	$ 703
Debt instrument, Fixed interest rate (as a percent)		5.95%	5.95%
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating rate notes due to BTMU June 2023
Debt Instrument
Long-term Debt		$ 750	$ 750
Long-term Debt, Weighted Average Interest Rate		1.83%	1.80%
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating rate notes due to BTMU June 2023 | London Interbank Offered Rate LIBOR
Debt Instrument
Interest rate above variable interest rate (as a percent)		1.20%	1.20%
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Capital Lease Obligations
Debt Instrument
Long-term Debt, Weighted Average Interest Rate		4.92%	4.92%
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating Rate Debt Due January 2018 Issued September 2015 [Member]
Debt Instrument
Long-term Debt		$ 1,500	$ 1,500
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating Rate Debt Due January 2018 Issued October 2015 [Member]
Debt Instrument
Long-term Debt		1,000
Union Bank, N.A. and other subsidiaries | Subordinated Debt | Floating Rate Debt Due January 2018 Issued October 2015 [Member] [Member]
Debt Instrument
Long-term Debt			1,000
Union Bank, N.A. and other subsidiaries | Junior subordinated debt payable to trusts | Capital Lease Obligations
Debt Instrument
Long-term Debt	[2]	$ 14	$ 14

[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmFjNDM2NWM5MjFiYTQzMWQ5ZDk1MGFiNmJhM2RiMzJifFRleHRTZWxlY3Rpb246OENBQ0MyQkM5MzRDNzBBRUVGRDczODhDNkY3QzZEOEQM}

[2] Long-term debt assumed through acquisitions.

XML

Fair Value Measurement and Fair Value of Financial Instruments (Details) - USD ($) $ in Millions		Mar. 31, 2016		Dec. 31, 2015
Fair value measurements
Trading account assets		$ 1,370		$ 1,087
Securities available for sale		13,003
U.S. Treasury
Fair value measurements
Securities available for sale		152
Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Fair value measurements
Securities available for sale		6,308
Residential mortgage-backed securities, Privately issued
Fair value measurements
Securities available for sale		203
Collateralized loan obligations
Fair value measurements
Securities available for sale		3,227
Other Asset Liability Management Securities
Fair value measurements
Securities available for sale		7
Other debt securities, Direct bank purchase bonds
Fair value measurements
Securities available for sale		1,581
Other debt securities, Other
Fair value measurements
Securities available for sale		33
Level 3
Fair value measurements
Other assets				17
Fair Value, Measurements, Recurring [Member]
Fair value measurements
Trading account assets		(834)	[1]	(834)	[2]
Other assets		(208)	[1]	(75)	[2]
Total assets		$ (1,042)	[1]	(909)	[2]
Percentage of Total		100.00%
Percentage of Total Company Assets		12.00%
Trading account liabilities		$ (1,266)	[1]	(858)	[2]
Other liabilities		0		(14)	[2]
Total liabilities		$ (1,266)	[1]	(872)	[2]
Percentage of Total		100.00%
Percentage of Total Company Liabilities		1.00%
Fair Value, Measurements, Recurring [Member] | Level 1
Fair value measurements
Trading account assets		$ 2		1
Securities available for sale		8		8
Total assets		$ 10		$ 9
Percentage of Total		0.00%		0.00%
Percentage of Total Company Assets		0.00%		0.00%
Trading account liabilities		$ 3		$ 2
Total liabilities		$ 3		$ 2
Percentage of Total		0.00%		0.00%
Percentage of Total Company Liabilities		0.00%		0.00%
Fair Value, Measurements, Recurring [Member] | Level 1 | Interest rate derivative contracts
Fair value measurements
Trading account assets		$ 1		$ 0
Trading account liabilities		3		1
Fair Value, Measurements, Recurring [Member] | Level 1 | Foreign exchange derivative contracts
Fair value measurements
Trading account assets		1		1
Trading account liabilities		0		1
Fair Value, Measurements, Recurring [Member] | Level 1 | Equity securities
Fair value measurements
Securities available for sale		8		8
Fair Value, Measurements, Recurring [Member] | Level 2
Fair value measurements
Trading account assets		2,013		1,692
Securities available for sale		11,390		12,733
Other assets		274		77
Total assets		$ 13,677		$ 14,502
Percentage of Total		94.00%		94.00%
Percentage of Total Company Assets		11.00%		12.00%
Trading account liabilities		$ 1,823		$ 1,429
Other liabilities		1		14
Total liabilities		$ 1,824		$ 1,443
Percentage of Total		211.00%		159.00%
Percentage of Total Company Liabilities		2.00%		1.00%
Fair Value, Measurements, Recurring [Member] | Level 2 | U.S. Treasury
Fair value measurements
Trading account assets		$ 36		$ 37
Securities available for sale		152		594
Fair Value, Measurements, Recurring [Member] | Level 2 | U.S. government-sponsored agencies
Fair value measurements
Trading account assets		97		106
Fair Value, Measurements, Recurring [Member] | Level 2 | State and municipal
Fair value measurements
Trading account assets		8		3
Fair Value, Measurements, Recurring [Member] | Level 2 | Commercial Paper
Fair value measurements
Trading account assets				25
Fair Value, Measurements, Recurring [Member] | Level 2 | Interest rate derivative contracts
Fair value measurements
Trading account assets		1,394		998
Trading account liabilities		1,344		947
Fair Value, Measurements, Recurring [Member] | Level 2 | Commodity derivative contracts
Fair value measurements
Trading account assets		367		408
Trading account liabilities		330		368
Fair Value, Measurements, Recurring [Member] | Level 2 | Foreign exchange derivative contracts
Fair value measurements
Trading account assets		111		115
Trading account liabilities		130		91
Fair Value, Measurements, Recurring [Member] | Level 2 | Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Fair value measurements
Securities available for sale		6,308		7,201
Fair Value, Measurements, Recurring [Member] | Level 2 | Residential mortgage-backed securities, Privately issued
Fair value measurements
Securities available for sale		203		151
Fair Value, Measurements, Recurring [Member] | Level 2 | Privately issued commercial mortgage-backed securities
Fair value measurements
Securities available for sale		1,492		1,546
Fair Value, Measurements, Recurring [Member] | Level 2 | Collateralized loan obligations
Fair value measurements
Securities available for sale		3,227		3,233
Fair Value, Measurements, Recurring [Member] | Level 2 | Other Asset Liability Management Securities
Fair value measurements
Securities available for sale		7		7
Fair Value, Measurements, Recurring [Member] | Level 2 | Other debt securities, Other
Fair value measurements
Securities available for sale		1		1
Fair Value, Measurements, Recurring [Member] | Level 2 | Interest rate hedging contracts
Fair value measurements
Other assets		271		73
Other liabilities				14
Fair Value, Measurements, Recurring [Member] | Level 2 | Other derivative contracts
Fair value measurements
Other assets		3		4
Other liabilities		1		0
Fair Value, Measurements, Recurring [Member] | Level 2 | Securities sold, not yet purchased
Fair value measurements
Trading account liabilities		19		23
Fair Value, Measurements, Recurring [Member] | Level 3
Fair value measurements
Trading account assets		189		228
Securities available for sale		1,613		1,603
Other assets		15		1
Total assets		$ 1,817		$ 1,832
Percentage of Total		13.00%		12.00%
Percentage of Total Company Assets		2.00%		2.00%
Trading account liabilities		$ 187		$ 223
FDIC clawback liability				112
Other liabilities		116		114
Total liabilities		$ 303		$ 337
Percentage of Total		35.00%		37.00%
Percentage of Total Company Liabilities		0.00%		0.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Interest rate derivative contracts
Fair value measurements
Trading account assets		$ 2		$ 4
Fair Value, Measurements, Recurring [Member] | Level 3 | Commodity derivative contracts
Fair value measurements
Trading account assets		3		1
Trading account liabilities		3		1
Fair Value, Measurements, Recurring [Member] | Level 3 | Foreign exchange derivative contracts
Fair value measurements
Trading account assets		1		1
Trading account liabilities		1		1
Fair Value, Measurements, Recurring [Member] | Level 3 | Equity Derivative contracts
Fair value measurements
Trading account assets		183		222
Trading account liabilities		183		221
Fair Value, Measurements, Recurring [Member] | Level 3 | Other debt securities, Direct bank purchase bonds
Fair value measurements
Securities available for sale		1,581		1,572
Fair Value, Measurements, Recurring [Member] | Level 3 | Other debt securities, Other
Fair value measurements
Securities available for sale		32		31
Fair Value, Measurements, Recurring [Member] | Level 3 | Mortgage servicing rights [Domain]
Fair value measurements
Other assets		13
Fair Value, Measurements, Recurring [Member] | Level 3 | Other derivative contracts
Fair value measurements
Other assets		2		1
Other liabilities		$ 1		$ 2
Fair Value, Measurements, Recurring [Member] | Netting [Member]
Fair value measurements
Percentage of Total		(7.00%)	[1]	(6.00%)	[2]
Percentage of Total Company Assets		(1.00%)	[1]	(1.00%)	[2]
Percentage of Total		(146.00%)	[1]	(96.00%)	[2]
Percentage of Total Company Liabilities		(1.00%)	[1]	(1.00%)	[2]
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Interest rate derivative contracts
Fair value measurements
Trading account assets		$ (254)	[1]	$ (163)	[2]
Trading account liabilities		(1,150)	[1]	(775)	[2]
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Commodity derivative contracts
Fair value measurements
Trading account assets		(351)	[1]	(384)	[2]
Trading account liabilities		(78)	[1]	(61)	[2]
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Foreign exchange derivative contracts
Fair value measurements
Trading account assets		(54)	[1]	(70)	[2]
Trading account liabilities		(38)	[1]	(22)	[2]
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Equity Derivative contracts
Fair value measurements
Trading account assets		(175)	[1]	(217)	[2]
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Interest rate hedging contracts
Fair value measurements
Other assets		(205)	[1]	(71)	[2]
Trading account liabilities	[2]			(14)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Other derivative contracts
Fair value measurements
Other assets		(3)	[1]	(4)	[2]
Fair Value
Fair value measurements
Other assets				17
Fair Value | Fair Value, Measurements, Recurring [Member]
Fair value measurements
Trading account assets		1,370		1,087
Securities available for sale		13,011		14,344
Other assets		81		3
Total assets		14,462		$ 15,434
Percentage of Total				100.00%
Percentage of Total Company Assets				13.00%
Trading account liabilities		747		$ 796
FDIC clawback liability		115		112
Other liabilities		117		114
Total liabilities		864		$ 910
Percentage of Total				100.00%
Percentage of Total Company Liabilities				0.00%
Fair Value | Fair Value, Measurements, Recurring [Member] | U.S. Treasury
Fair value measurements
Trading account assets		36		$ 37
Securities available for sale		152		594
Fair Value | Fair Value, Measurements, Recurring [Member] | U.S. government-sponsored agencies
Fair value measurements
Trading account assets		97		106
Fair Value | Fair Value, Measurements, Recurring [Member] | State and municipal
Fair value measurements
Trading account assets		8		3
Fair Value | Fair Value, Measurements, Recurring [Member] | Commercial Paper
Fair value measurements
Trading account assets				25
Fair Value | Fair Value, Measurements, Recurring [Member] | Interest rate derivative contracts
Fair value measurements
Trading account assets		1,143		839
Trading account liabilities		197		173
Fair Value | Fair Value, Measurements, Recurring [Member] | Commodity derivative contracts
Fair value measurements
Trading account assets		19		25
Trading account liabilities		255		308
Fair Value | Fair Value, Measurements, Recurring [Member] | Foreign exchange derivative contracts
Fair value measurements
Trading account assets		59		47
Trading account liabilities		93		71
Fair Value | Fair Value, Measurements, Recurring [Member] | Equity Derivative contracts
Fair value measurements
Trading account assets		8		5
Trading account liabilities		183		221
Fair Value | Fair Value, Measurements, Recurring [Member] | Residential mortgage-backed securities, U.S. government agency and government-sponsored agencies
Fair value measurements
Securities available for sale		6,308		7,201
Fair Value | Fair Value, Measurements, Recurring [Member] | Residential mortgage-backed securities, Privately issued
Fair value measurements
Securities available for sale		203		151
Fair Value | Fair Value, Measurements, Recurring [Member] | Privately issued commercial mortgage-backed securities
Fair value measurements
Securities available for sale		1,492		1,546
Fair Value | Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations
Fair value measurements
Securities available for sale		3,227		3,233
Fair Value | Fair Value, Measurements, Recurring [Member] | Other Asset Liability Management Securities
Fair value measurements
Securities available for sale		7		7
Fair Value | Fair Value, Measurements, Recurring [Member] | Other debt securities, Direct bank purchase bonds
Fair value measurements
Securities available for sale		1,581		1,572
Fair Value | Fair Value, Measurements, Recurring [Member] | Other debt securities, Other
Fair value measurements
Securities available for sale		33		32
Fair Value | Fair Value, Measurements, Recurring [Member] | Equity securities
Fair value measurements
Securities available for sale		8		8
Fair Value | Fair Value, Measurements, Recurring [Member] | Mortgage servicing rights [Domain]
Fair value measurements
Other assets		13
Fair Value | Fair Value, Measurements, Recurring [Member] | Interest rate hedging contracts
Fair value measurements
Other assets		66		2
Other liabilities				0
Fair Value | Fair Value, Measurements, Recurring [Member] | Other derivative contracts
Fair value measurements
Other assets		2		1
Other liabilities		2		2
Fair Value | Fair Value, Measurements, Recurring [Member] | Securities sold, not yet purchased
Fair value measurements
Trading account liabilities		19		$ 23
Fdic | Fair Value, Measurements, Recurring [Member] | Level 3
Fair value measurements
FDIC clawback liability		$ 115

[1] Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

[2] Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

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Fair Value Measurement and Fair Value of Financial Instruments (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Trading Liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liability balance,(trading and other) beginning of period	$ (223)	$ (305)
Trading and other liabilities, Included in income before taxes	17	(10)
Settlements, trading and others liabilities	19	14
Liability balance,(trading and other) end of period	(187)	(301)
Changes in unrealized gains (losses) included in income before taxes for assets still held at end of period, laibilities	17	(10)
Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liability balance,(trading and other) beginning of period	(114)	(107)
Trading and other liabilities, Included in income before taxes	(2)	(2)
Liability balance,(trading and other) end of period	(116)	(109)
Changes in unrealized gains (losses) included in income before taxes for assets still held at end of period, laibilities	(2)	(2)
Trading Assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets balance,(trading and other) beginning of period	228	311
Trading and other assets, Included in income before taxes	(18)	8
Purchases/additions, assets	0
Settlements	(21)	(13)
Assets balance,(trading and other) end of period	189	306
Changes in unrealized gains (losses) included in income before taxes for assets still held at end of period, assets	(18)	8
Securities Available for Sale
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets balance,(trading and other) beginning of period	1,603	1,790
Total gains (losses) (realized/unrealized) included in other comprehensive income	(2)	(3)
Purchases/additions, assets	78	9
Settlements	(66)	(102)
Assets balance,(trading and other) end of period	1,613	1,694
Other assets
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets balance,(trading and other) beginning of period	1	2
Trading and other assets, Included in income before taxes	1	1
Assets balance,(trading and other) end of period	15	3
Changes in unrealized gains (losses) included in income before taxes for assets still held at end of period, assets	1	$ 1
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	$ 13

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Fair Value Measurement and Fair Value of Financial Instruments (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Unobservable Input(s) Level 3
Securities available for sale	$ 13,011	$ 14,344
Other liabilities	$ 2,203	2,017	$ 1,891
Fdic | Minimum | Discounted cash flow
Unobservable Input(s) Level 3
Probability of default (as a percent)	0.10%
Loss severity (as a percent)	0.00%
Fdic | Maximum | Discounted cash flow
Unobservable Input(s) Level 3
Probability of default (as a percent)	100.00%
Loss severity (as a percent)	100.00%
Fdic | Weighted Average | Discounted cash flow
Unobservable Input(s) Level 3
Probability of default (as a percent)	56.60%
Loss severity (as a percent)	30.80%
Level 3 | Fdic
Unobservable Input(s) Level 3
Other liabilities	$ 115
Other debt securities, Direct bank purchase bonds
Unobservable Input(s) Level 3
Securities available for sale	$ 1,581	$ 1,572
Other debt securities, Direct bank purchase bonds | Minimum | Return on equity
Unobservable Input(s) Level 3
Market-required return on capital (as a percent)	8.00%
Probability of default (as a percent)	0.00%
Loss severity (as a percent)	10.00%
Other debt securities, Direct bank purchase bonds | Maximum | Return on equity
Unobservable Input(s) Level 3
Market-required return on capital (as a percent)	10.00%
Probability of default (as a percent)	25.00%
Loss severity (as a percent)	60.00%
Other debt securities, Direct bank purchase bonds | Weighted Average | Return on equity
Unobservable Input(s) Level 3
Market-required return on capital (as a percent)	9.80%
Probability of default (as a percent)	0.40%
Loss severity (as a percent)	29.20%
Other debt securities, Direct bank purchase bonds | Level 3
Unobservable Input(s) Level 3
Securities available for sale	$ 1,581

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Fair Value Measurement and Fair Value of Financial Instruments (Details 4) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015	Dec. 31, 2015
Fair value measurements
Trading account assets	$ 1,370			$ 1,087
Impairment of Loans Held for Sale	(3)
Loans:
Impaired loans	1,054			833
Loss Impaired loans	(127)		$ (6)
Impairment of Premises and Equipment	4
Other assets:
Loss on OREO	(1)		0
Loss on Private equity investments	(12)		(5)
Impairment of Intangible Assets, Finite-lived	(1)
Loss, Total	(148)		(11)
Fair Value, Measurements, Recurring [Member]
Fair value measurements
Trading account assets	(834)	[1]		(834)	[2]
Fair Value, Measurements, Recurring [Member] | Level 3
Fair value measurements
Trading account assets	189			228
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair value measurements
Trading account assets	2			1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair value measurements
Trading account assets	2,013			1,692
Fair Value Measurements, Nonrecurring
Fair value measurements
Loans Held-for-sale, Fair Value Disclosure	5
Loans:
Impaired loans	375		46
Property, Plant, and Equipment, Fair Value Disclosure	0
Other assets:
OREO	2		9
Private Equity Investments	10		7
Total	392		62
Finite-lived Intangible Assets, Fair Value Disclosure	0
Fair Value Measurements, Nonrecurring | Level 3
Fair value measurements
Loans Held-for-sale, Fair Value Disclosure	5
Loans:
Impaired loans	375		46
Property, Plant, and Equipment, Fair Value Disclosure	0
Other assets:
OREO	2		9
Private Equity Investments	10		7
Total	392		$ 62
Finite-lived Intangible Assets, Fair Value Disclosure	0
Interest rate derivative contracts | Fair Value, Measurements, Recurring [Member] | Level 3
Fair value measurements
Trading account assets	2			4
Interest rate derivative contracts | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Fair value measurements
Trading account assets	1			0
Interest rate derivative contracts | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Fair value measurements
Trading account assets	$ 1,394			$ 998

[1] Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

[2] Amounts represent the impact of legally enforceable master netting agreements between the same counterparties that allow the Company to net settle all contracts.

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Fair Value Measurement and Fair Value of Financial Instruments (Details 5) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Assets
Fair value of securities held to maturity		$ 10,848	$ 10,207
Level 1
Assets
Cash and cash equivalents		8,324	4,529
Level 2
Assets
Fair value of securities held to maturity		10,848	10,207
Liabilities
Deposits		89,548	84,375
Commercial paper and other short-term borrowings		647	1,038
Long-term debt		11,900	12,351
Level 3
Assets
Loans held for investment, net of allowance for loan losses	[1]	79,411	77,640
Other assets			17
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit		241	243
Carrying Amount
Assets
Cash and cash equivalents		8,324	4,529
Fair value of securities held to maturity		10,605	10,158
Loans held for investment, net of allowance for loan losses	[1]	77,697	76,150
Other assets			16
Liabilities
Deposits		89,500	84,340
Commercial paper and other short-term borrowings		647	1,038
Long-term debt		11,843	12,349
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit		241	243
Fair Value
Assets
Cash and cash equivalents		8,324	4,529
Fair value of securities held to maturity		10,848	10,207
Loans held for investment, net of allowance for loan losses	[1]	79,411	77,640
Other assets			17
Liabilities
Deposits		89,548	84,375
Commercial paper and other short-term borrowings		647	1,038
Long-term debt		11,900	12,351
Off-Balance Sheet Instruments
Commitments to extend credit and standby and commercial letters of credit		$ 241	$ 243

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Derivative Instruments and Other Financial Instruments Used For Hedging (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	$ 128,725		$ 129,600
Fair Value, Asset Derivatives	2,339		1,828
Fair Value, Liability Derivatives	1,996		1,647
Not designated as hedging instruments | Trading derivatives
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	113,642		113,599
Fair Value, Asset Derivatives	2,063		1,750
Fair Value, Liability Derivatives	1,994		1,631
Not designated as hedging instruments | Other risk management
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	283		251
Fair Value, Asset Derivatives	5		5
Fair Value, Liability Derivatives	2		2
Net losses on derivatives included in other noninterest income	1	$ (1)
Interest rate derivative contracts | Not designated as hedging instruments | Trading derivatives
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	100,017		100,932
Fair Value, Asset Derivatives	1,397		1,002
Fair Value, Liability Derivatives	1,347		948
Interest rate derivative contracts | Cash Flow Hedges | Designated as Hedging Instrument
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	14,300		15,250
Fair Value, Asset Derivatives	259		68
Fair Value, Liability Derivatives	0		14
Interest rate derivative contracts | Fair value hedges | Designated as Hedging Instrument
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	500		500
Fair Value, Asset Derivatives	12		5
Fair Value, Liability Derivatives	0		0
Commodity derivative contracts | Not designated as hedging instruments | Trading derivatives
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	3,410		3,775
Fair Value, Asset Derivatives	370		409
Fair Value, Liability Derivatives	333		369
Foreign exchange derivative contracts | Not designated as hedging instruments | Trading derivatives
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	7,060		5,541
Fair Value, Asset Derivatives	113		117
Fair Value, Liability Derivatives	131		93
Equity Derivative contracts | Not designated as hedging instruments | Trading derivatives
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	3,155		3,351
Fair Value, Asset Derivatives	183		222
Fair Value, Liability Derivatives	$ 183		$ 221

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Derivative Instruments and Other Financial Instruments Used For Hedging (Details 2) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2017	Dec. 31, 2015
Cash flow hedges
Derivative Notional Amount	$ 128,725			$ 129,600
Cash Flow Hedges
Cash flow hedges
Weighted average remaining life of the currently active cash flow hedges	3 years 5 months 1 day
Interest rate derivative contracts | Fair value hedges
Cash flow hedges
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 7	$ 5
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(7)	(4)
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	0	1
Designated as Hedging Instrument | Interest rate derivative contracts | Fair value hedges
Cash flow hedges
Gain (Loss) on Fair Value Hedges Recognized in Earnings	7	5
Derivative Notional Amount	500			500
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(7)	(4)
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	0	$ 1
Designated as Hedging Instrument | Interest rate derivative contracts | Cash Flow Hedges
Cash flow hedges
Derivative Notional Amount	14,300			$ 15,250
Libor Indexed Loans [Member] | Designated as Hedging Instrument | Interest Rate Swap [Member] | Cash Flow Hedges
Cash flow hedges
Derivative Notional Amount	$ 14,300
Scenario, Forecast [Member]
Cash flow hedges
Income from accumulated other comprehensive income expected to be reclassified to net interest income			$ 140

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Derivative Instruments and Other Financial Instruments Used For Hedging (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flow Hedges
Amount and location of net gains and losses
Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)	$ 266	$ 119
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	43	33
Cash Flow Hedges | Interest rate derivative contracts
Amount and location of net gains and losses
Amount of Gain or (Loss) Recognized in OCI on Derivative Instruments (Effective Portion)	266	119
Cash Flow Hedges | Interest rate derivative contracts | Interest income
Amount and location of net gains and losses
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	43	32
Cash Flow Hedges | Interest rate derivative contracts | Interest expense
Amount and location of net gains and losses
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0	1
Cash Flow Hedges | Interest rate derivative contracts | Noninterest expense | Maximum
Amount and location of net gains and losses
Gain or (Loss) Recognized in Income on Derivative Instruments (Ineffective Portion and Amount Excluded from Effectiveness Testing)	1	1
Fair value hedges | Interest rate derivative contracts
Amount and location of net gains and losses
Derivative	7	5
Hedged Item	(7)	(4)
Hedge Ineffectiveness	0	1
Designated as Hedging Instrument | Fair value hedges | Interest rate derivative contracts
Amount and location of net gains and losses
Derivative	7	5
Hedged Item	(7)	(4)
Hedge Ineffectiveness	$ 0	$ 1

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Derivative Instruments and Other Financial Instruments Used For Hedging (Details 4) - Trading Derivatives - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Trading Derivatives
Gain or (Loss) Recognized in Income on Derivative Instruments	$ 11	$ 5
Interest rate derivative contracts
Trading Derivatives
Gain or (Loss) Recognized in Income on Derivative Instruments	2	(2)
Foreign exchange derivative contracts
Trading Derivatives
Gain or (Loss) Recognized in Income on Derivative Instruments	9	6
Commodity contracts
Trading Derivatives
Gain or (Loss) Recognized in Income on Derivative Instruments	$ 0	$ 1

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Derivative Instruments and Other Financial Instruments Used For Hedging (Details 5) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Financial Assets
Gross Amounts of Recognized Assets, Derivative assets	$ 2,339	$ 1,828
Gross Amounts Offset in Balance Sheet, Derivative assets	1,042	909
Net Amounts Presented in Balance Sheet, Derivative assets	1,297	919
Gross Amounts Not Offset In Balance Sheet, Financial Instruments, Derivative assets	55	60
Net Amount, Derivative assets	1,240	859
Gross Amounts of Recognized Assets, Securities purchased under resale agreements	29	24
Net Amounts Presented in Balance Sheet, Securities purchased under resale agreements	29	24
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Securities purchased under repurchase agreements	28	24
Net Amount, Securities purchased under repurchase agreements	1	0
Gross Amounts of Recognized Assets, Financial Assets	2,368	1,852
Gross Amounts Offset in Balance Sheet, Financial Assets	1,042	909
Net Amounts Presented in Balance Sheet, Financial Assets	1,326	943
Gross Amounts Not Offset In Balance Sheet, Financial Instruments, Financial Assets	83	84
Net Amount, Financial Assets	1,241	859
Financial Liabilities
Gross Amounts of Recognized Liabilities, Derivative liabilities	1,996	1,647
Gross Amounts Offset in Balance Sheet, Derivative liabilities	1,266	872
Net Amounts Presented in Balance Sheet, Derivative liabilities	730	775
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Derivative liabilities	229	180
Derivative, Collateral, Obligation to Return Cash	1	0
Derivative, Collateral, Right to Reclaim Cash	2	0
Net Amount, Derivative liabilities	500	595
Gross Amounts of Recognized Liabilities, Securities sold under repurchase agreements	2	36
Net Amounts Presented in Balance Sheet, Securities sold under repurchase agreements	2	36
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Securities sold under repurchase agreements	2	36
Gross Amounts of Recognized Liabilities, Financial Liabilities	1,998	1,683
Gross Amounts Offset in Balance Sheet, Financial Liabilities	1,266	872
Net Amounts Presented in Balance Sheet, Financial Liabilities	732	811
Gross Amount Not Offset in Balance Sheet, Financial Instruments, Financial Liabilities	231	216
Net Amount, Financial Liabilities	$ 500	$ 595

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustment	$ 4	$ (7)
Unrealized net gains (losses) on hedges arising during the period, Before Tax Amount	266	119
Less: Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt, Before Tax Amount	(43)	(33)
Net change, Before Tax Amount	223	86
Unrealized holding gains (losses) arising during the period on securities available for sale, Before Tax Amount	158	120
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net, Before Tax Amount	(13)	(3)
Less: accretion of fair value adjustment on securities available for sale, Before Tax Amount		(2)
Less: amortization of net unrealized (gains) losses on held to maturity securities, Before Tax Amount	5	5
Net change, Before Tax Amount	150	120
Foreign currency translation adjustment, Before Tax Amount	7	(12)
Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	(6)	(6)
Recognized net actuarial (gain) loss, Before Tax Amount	22	29
Net change, Before Tax Amount	(16)	23
Net change in accumulated other comprehensive loss, Before Tax Amount	394	217
Unrealized net gains (losses) on hedges arising during the period, Tax Effect	(105)	(47)
Less: Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt, Tax Effect	17	13
Net change, Tax Effect	88	(34)
Unrealized holding gains (losses) arising during the period on securities available for sale, Tax Effect	(62)	(47)
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net, Tax Effect	5	1
Less: accretion of fair value adjustment on securities available for sale, Tax Effect		1
Less: amortization of net unrealized (gains) losses on held to maturity securities, Tax Effect	(2)	(2)
Net change, Tax Effect	59	(47)
Foreign currency translation adjustment, Tax Effect	(3)	5
Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Tax	3	2
Recognized net actuarial (gain) loss, Tax Effect	(9)	(11)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	13	18
Net change, Tax Effect	(6)	(9)
Net change in accumulated other comprehensive loss, Tax Effect	155	(85)
Unrealized net gains (losses) on hedges arising during the period, Net of Tax	161	72
Less: Reclassification adjustment for net (gains) losses on hedges included in interest income for loans and interest expense on long-term debt, Net of Tax	(26)	(20)
Net change, Net of Tax	135	52
Unrealized holding gains (losses) arising during the period on securities available for sale, Net of Tax	96	73
Reclassification adjustment for net (gains) losses on securities available for sale included in securities gains, net, Net of Tax	(8)	(2)
Less: accretion of fair value adjustment on securities available for sale, Net of Tax		(1)
Less: amortization of net unrealized (gains) losses on held to maturity securities, Net of Tax	3	3
Net change, Net of Tax	91	73
Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	(3)	(4)
Net change, Net of Tax	10	14
Other Comprehensive Income Other Before Tax	(2)
Other Comprehensive Income Other Tax	1
Other Comprehensive Income, Other, Net of Tax	(1)
Total other comprehensive income (loss)	$ 239	$ 132

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Accumulated Other Comprehensive Loss (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Change in accumulated other comprehensive loss balances:
Beginning Balance	$ (752)	$ (729)
Other comprehensive income (loss) before reclassifications	263	140
Amounts reclassified from AOCI	24	(8)
Ending Balance	(513)	(597)
Net Unrealized Gains (Losses) on Cash Flow Hedges
Change in accumulated other comprehensive loss balances:
Beginning Balance	36	21
Other comprehensive income (loss) before reclassifications	161	72
Amounts reclassified from AOCI	(26)	(20)
Ending Balance	171	73
Net Unrealized Gains (Losses) on Securities
Change in accumulated other comprehensive loss balances:
Beginning Balance	(151)	(145)
Other comprehensive income (loss) before reclassifications	99	75
Amounts reclassified from AOCI	(8)	(2)
Ending Balance	(60)	(72)
Foreign Currency Translation Adjustment
Change in accumulated other comprehensive loss balances:
Beginning Balance	(25)	(10)
Other comprehensive income (loss) before reclassifications	4	(7)
Amounts reclassified from AOCI	0	0
Ending Balance	(21)	(17)
Pension and Other Benefits Adjustment
Change in accumulated other comprehensive loss balances:
Beginning Balance	(612)	(595)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI	10	14
Ending Balance	(602)	(581)
Accumulated Other [Member]
Change in accumulated other comprehensive loss balances:
Beginning Balance	0	0
Other comprehensive income (loss) before reclassifications	(1)	0
Amounts reclassified from AOCI	0	0
Ending Balance	$ (1)	$ 0

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Employee Pension and Other Postretirement Benefits (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Pension Benefits
Components of net periodic benefit cost:
Service cost	$ 23	$ 25
Interest cost	26	27
Expected return on plan assets	(60)	(54)
Amortization of prior service cost	(4)	(4)
Recognized net actuarial loss	19	27
Total net periodic benefit cost	4	21
Other Postretirement Benefits
Components of net periodic benefit cost:
Service cost	2	2
Interest cost	3	3
Expected return on plan assets	(5)	(5)
Amortization of prior service cost	(2)	(2)
Recognized net actuarial loss	2	1
Total net periodic benefit cost	0	(1)
Superannuation, SERP and ESBP
Components of net periodic benefit cost:
Service cost	1	0
Interest cost	0	0
Expected return on plan assets	0	0
Amortization of prior service cost	0	0
Recognized net actuarial loss	1	1
Total net periodic benefit cost	$ 2	$ 1

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Commitments, Contingencies and Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Commitments to extend credit
Commitment, Contingencies and Guarantees disclosures
Commitments	$ 35,864
Issued standby and commercial letters of credit
Commitment, Contingencies and Guarantees disclosures
Commitments	$ 5,796
Maximum term	1 year
Carrying value	$ 4
Other commitments
Commitment, Contingencies and Guarantees disclosures
Commitments	115
Oil and Gas [Member] | Commitments to extend credit
Commitment, Contingencies and Guarantees disclosures
Commitments	$ 3,296	$ 6,832

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Commitments, Contingencies and Guarantees (Details 2) $ in Millions	Mar. 31, 2016 USD ($)
Financial guarantee | Interest rate swap contracts
Guarantee disclosures
Current exposure to loss	$ 41
Future exposure to loss	65
Letter of Credit [Member]
Guarantee disclosures
Loss Contingency, Estimate of Possible Loss	4
Other Commitment	5,796
Commitments to extend credit
Guarantee disclosures
Other Commitment	$ 35,864

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Business Segments (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) branch
Regional Bank | Maximum
Business segments
Servicing Level, Deposits and Investment Balances	$ 500,000,000
Consumer and Business Banking Division | California
Business segments
Number of full-service branches | branch	330
Consumer and Business Banking Division | Washington and Oregon
Business segments
Number of full-service branches | branch	26
Commercial Banking | Maximum
Business segments
Corporate customers revenues	$ 500,000,000
U.S. Wholesale Banking | Minimum
Business segments
Corporate customers revenues	500,000,000
Retail Banking Division [Member] | Regional Bank | Maximum
Business segments
Servicing Level, Deposits and Investment Balances	3,000,000
Wealth Markets Division [Member] | Regional Bank | Minimum
Business segments
Servicing Level, Deposits and Investment Balances	$ 3,000,000

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Business Segments (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Business segments
Net interest income (expense)	$ 697	$ 683
Noninterest income (expense)	395	335
Total revenue	1,092	1,018
Noninterest expense	876	849
Provision for Loan and Lease Losses	158	(3)
Provision for credit losses	162	3
Income before income taxes and including noncontrolling interests	54	166
Income tax expense (benefit)	17	34
Net Income Including Noncontrolling Interests	37	132
Deduct: net loss from noncontrolling interests	12	5
Net Income Attributable to MUAH	49	137
Total assets, end of period	120,909	113,698	$ 116,216
Operating segments
Business segments
Total revenue	136
Reconciling Items
Business segments
Net interest income (expense)	(100)	(91)
Noninterest income (expense)	(50)	(48)
Total revenue	(150)	(139)
Noninterest expense	(48)	(45)
Provision for credit losses	0	(2)
Income before income taxes and including noncontrolling interests	(102)	(92)
Income tax expense (benefit)	(40)	(36)
Net Income Including Noncontrolling Interests	(62)	(56)
Net Income Attributable to MUAH	(62)	(56)
Total assets, end of period	(2,144)	(2,168)
Retail Banking and Wealth Markets | Operating segments
Business segments
Net interest income (expense)	482	479
Noninterest income (expense)	114	111
Total revenue	596	590
Noninterest expense	399	425
Provision for credit losses	(2)	6
Income before income taxes and including noncontrolling interests	199	159
Income tax expense (benefit)	61	45
Net Income Including Noncontrolling Interests	138	114
Net Income Attributable to MUAH	138	114
Total assets, end of period	62,322	62,224
Corporate Banking | Operating segments
Business segments
Net interest income (expense)	108	100
Noninterest income (expense)	28	32
Total revenue		132
Noninterest expense	37	43
Provision for credit losses	126	2
Income before income taxes and including noncontrolling interests	(27)	87
Income tax expense (benefit)	(11)	34
Net Income Including Noncontrolling Interests	(16)	53
Net Income Attributable to MUAH	(16)	53
Total assets, end of period	15,039	13,263
Transaction Banking | Operating segments
Business segments
Net interest income (expense)	121	115
Noninterest income (expense)	46	43
Total revenue	167	158
Noninterest expense	111	100
Provision for credit losses	2	1
Income before income taxes and including noncontrolling interests	54	57
Income tax expense (benefit)	21	22
Net Income Including Noncontrolling Interests	33	35
Net Income Attributable to MUAH	33	35
Total assets, end of period	2,524	1,624
Investment Banking & Markets | Operating segments
Business segments
Net interest income (expense)	59	60
Noninterest income (expense)	25	31
Total revenue	84	91
Noninterest expense	35	30
Provision for credit losses	31	(7)
Income before income taxes and including noncontrolling interests	18	68
Income tax expense (benefit)	(12)	13
Net Income Including Noncontrolling Interests	30	55
Net Income Attributable to MUAH	30	55
Total assets, end of period	11,971	11,149
Other | Operating segments
Business segments
Net interest income (expense)	27	20
Noninterest income (expense)	232	166
Total revenue	259	186
Noninterest expense	342	296
Provision for credit losses	5	3
Income before income taxes and including noncontrolling interests	(88)	(113)
Income tax expense (benefit)	(2)	(44)
Net Income Including Noncontrolling Interests	(86)	(69)
Deduct: net loss from noncontrolling interests	12	5
Net Income Attributable to MUAH	(74)	(64)
Total assets, end of period	$ 31,197	$ 27,606