<SEC-DOCUMENT>0001628280-21-009536-index.html : 20210507
<SEC-HEADER>0001628280-21-009536.hdr.sgml : 20210507
<ACCEPTANCE-DATETIME>20210507161944
ACCESSION NUMBER:		0001628280-21-009536
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		62
CONFORMED PERIOD OF REPORT:	20210507
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210507
DATE AS OF CHANGE:		20210507

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MUFG Americas Holdings Corp
		CENTRAL INDEX KEY:			0001011659
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				941234979
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15081
		FILM NUMBER:		21902979

	BUSINESS ADDRESS:	
		STREET 1:		1251 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020
		BUSINESS PHONE:		212-782-5911

	MAIL ADDRESS:	
		STREET 1:		1251 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNIONBANCAL CORP
		DATE OF NAME CHANGE:	19960403
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>ub-20210507.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: ub-20210507.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a1q21muahinvestorpresent.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: a1q21muahinvestorpresent.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>ub-20210507.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
<TEXT>
Document 3 - file: ub-20210507.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.CAL
<SEQUENCE>4
<FILENAME>ub-20210507_cal.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
<TEXT>
Document 4 - file: ub-20210507_cal.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>5
<FILENAME>ub-20210507_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
<TEXT>
Document 5 - file: ub-20210507_def.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>6
<FILENAME>ub-20210507_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
<TEXT>
Document 6 - file: ub-20210507_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>7
<FILENAME>ub-20210507_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
Document 7 - file: ub-20210507_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>a1q21muahinvestorpresent001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: a1q21muahinvestorpresent001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>a1q21muahinvestorpresent002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: a1q21muahinvestorpresent002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>a1q21muahinvestorpresent003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: a1q21muahinvestorpresent003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>a1q21muahinvestorpresent004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: a1q21muahinvestorpresent004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>a1q21muahinvestorpresent005.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: a1q21muahinvestorpresent005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>a1q21muahinvestorpresent006.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: a1q21muahinvestorpresent006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>a1q21muahinvestorpresent007.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: a1q21muahinvestorpresent007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>a1q21muahinvestorpresent008.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: a1q21muahinvestorpresent008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>a1q21muahinvestorpresent009.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: a1q21muahinvestorpresent009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>a1q21muahinvestorpresent010.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: a1q21muahinvestorpresent010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>a1q21muahinvestorpresent011.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: a1q21muahinvestorpresent011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>a1q21muahinvestorpresent012.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: a1q21muahinvestorpresent012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>a1q21muahinvestorpresent013.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: a1q21muahinvestorpresent013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>a1q21muahinvestorpresent014.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: a1q21muahinvestorpresent014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>a1q21muahinvestorpresent015.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 22 - file: a1q21muahinvestorpresent015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>a1q21muahinvestorpresent016.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 23 - file: a1q21muahinvestorpresent016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>a1q21muahinvestorpresent017.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 24 - file: a1q21muahinvestorpresent017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>a1q21muahinvestorpresent018.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 25 - file: a1q21muahinvestorpresent018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>a1q21muahinvestorpresent019.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 26 - file: a1q21muahinvestorpresent019.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>a1q21muahinvestorpresent020.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 27 - file: a1q21muahinvestorpresent020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>a1q21muahinvestorpresent021.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 28 - file: a1q21muahinvestorpresent021.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>29
<FILENAME>a1q21muahinvestorpresent022.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 29 - file: a1q21muahinvestorpresent022.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>30
<FILENAME>a1q21muahinvestorpresent023.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 30 - file: a1q21muahinvestorpresent023.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>31
<FILENAME>a1q21muahinvestorpresent024.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 31 - file: a1q21muahinvestorpresent024.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>32
<FILENAME>a1q21muahinvestorpresent025.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 32 - file: a1q21muahinvestorpresent025.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>33
<FILENAME>a1q21muahinvestorpresent026.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 33 - file: a1q21muahinvestorpresent026.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>34
<FILENAME>a1q21muahinvestorpresent027.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 34 - file: a1q21muahinvestorpresent027.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>35
<FILENAME>a1q21muahinvestorpresent028.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 35 - file: a1q21muahinvestorpresent028.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>36
<FILENAME>a1q21muahinvestorpresent029.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 36 - file: a1q21muahinvestorpresent029.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>37
<FILENAME>a1q21muahinvestorpresent030.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 37 - file: a1q21muahinvestorpresent030.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>38
<FILENAME>a1q21muahinvestorpresent031.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 38 - file: a1q21muahinvestorpresent031.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>39
<FILENAME>a1q21muahinvestorpresent032.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 39 - file: a1q21muahinvestorpresent032.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>40
<FILENAME>a1q21muahinvestorpresent033.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 40 - file: a1q21muahinvestorpresent033.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>41
<FILENAME>a1q21muahinvestorpresent034.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 41 - file: a1q21muahinvestorpresent034.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>42
<FILENAME>a1q21muahinvestorpresent035.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 42 - file: a1q21muahinvestorpresent035.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>43
<FILENAME>a1q21muahinvestorpresent036.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 43 - file: a1q21muahinvestorpresent036.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>44
<FILENAME>a1q21muahinvestorpresent037.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 44 - file: a1q21muahinvestorpresent037.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>45
<FILENAME>a1q21muahinvestorpresent038.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 45 - file: a1q21muahinvestorpresent038.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>46
<FILENAME>a1q21muahinvestorpresent039.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 46 - file: a1q21muahinvestorpresent039.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>47
<FILENAME>a1q21muahinvestorpresent040.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 47 - file: a1q21muahinvestorpresent040.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>48
<FILENAME>a1q21muahinvestorpresent041.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 48 - file: a1q21muahinvestorpresent041.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>49
<FILENAME>a1q21muahinvestorpresent042.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 49 - file: a1q21muahinvestorpresent042.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>50
<FILENAME>a1q21muahinvestorpresent043.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 50 - file: a1q21muahinvestorpresent043.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>51
<FILENAME>a1q21muahinvestorpresent044.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 51 - file: a1q21muahinvestorpresent044.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>52
<FILENAME>a1q21muahinvestorpresent045.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 52 - file: a1q21muahinvestorpresent045.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>53
<FILENAME>a1q21muahinvestorpresent046.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 53 - file: a1q21muahinvestorpresent046.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>54
<FILENAME>a1q21muahinvestorpresent047.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 54 - file: a1q21muahinvestorpresent047.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>55
<FILENAME>ub-20210507_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 55 - file: ub-20210507_htm.html

Document 55 - RAW XML: ub-20210507_htm.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>56
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 56 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>57
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 57 - file: Financial_Report.xlsx

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>58
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 58 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>59
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 59 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>60
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 60 - file: FilingSummary.html

Document 60 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>62
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 62 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>63
<FILENAME>0001628280-21-009536-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 63 - file: 0001628280-21-009536-xbrl.zip

</DOCUMENT>
</SEC-DOCUMENT>