    <SEC-DOCUMENT>0001104659-22-127363-index.html : 20221215
    <SEC-HEADER>0001104659-22-127363.hdr.sgml : 20221215
    <ACCEPTANCE-DATETIME>20221215163026
    ACCESSION NUMBER:		0001104659-22-127363
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20221214
    ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20221215
    DATE AS OF CHANGE:		20221215

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST HAWAIIAN, INC.
    		CENTRAL INDEX KEY:			0000036377
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				990156159
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14585
    		FILM NUMBER:		221465192

    	BUSINESS ADDRESS:
    		STREET 1:		999 BISHOP STREET
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96813
    		BUSINESS PHONE:		808-525-7000

    	MAIL ADDRESS:
    		STREET 1:		999 BISHOP STREET
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96813

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BANCWEST CORP/HI
    		DATE OF NAME CHANGE:	19981105

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST HAWAIIAN INC
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>tm2232756d1_8k.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
    Document 1 - file: tm2232756d1_8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>tm2232756d1_ex99-1.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: tm2232756d1_ex99-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>fhb-20221214.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 3 - file: fhb-20221214.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>fhb-20221214_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 4 - file: fhb-20221214_lab.xml

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    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>fhb-20221214_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 5 - file: fhb-20221214_pre.xml

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tm2232756d1_ex99-1img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm2232756d1_ex99-1img001.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>7
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 7 - file: R1.htm

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>8
    <FILENAME>tm2232756d1_8k_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 8 - file: tm2232756d1_8k_htm.html

    Document 8 - RAW XML: tm2232756d1_8k_htm.xml

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>9
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 9 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>10
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: FilingSummary.html

    Document 12 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>14
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: MetaLinks.json

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    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>15
    <FILENAME>0001104659-22-127363-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: 0001104659-22-127363-xbrl.zip

    </DOCUMENT>
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