    <SEC-DOCUMENT>0000354707-26-000017-index.html : 20260327
    <SEC-HEADER>0000354707-26-000017.hdr.sgml : 20260327
    <ACCEPTANCE-DATETIME>20260327163547
    ACCESSION NUMBER:		0000354707-26-000017
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20260327
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20260327
    DATE AS OF CHANGE:		20260327

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			HAWAIIAN ELECTRIC INDUSTRIES INC
    		CENTRAL INDEX KEY:			0000354707
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				990208097
    		STATE OF INCORPORATION:			HI
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-08503
    		FILM NUMBER:		26808005

    	BUSINESS ADDRESS:
    		STREET 1:		1001 BISHOP STREET, SUITE 2900
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96813
    		BUSINESS PHONE:		8085435662

    	MAIL ADDRESS:
    		STREET 1:		P.O. BOX 730
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96808-0730

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			HAWAIIAN ELECTRIC CO INC
    		CENTRAL INDEX KEY:			0000046207
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				990040500
    		STATE OF INCORPORATION:			HI
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-04955
    		FILM NUMBER:		26808006

    	BUSINESS ADDRESS:
    		STREET 1:		1099 ALAKEA STREET, SUITE 2200
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96813
    		BUSINESS PHONE:		8085437771

    	MAIL ADDRESS:
    		STREET 1:		1099 ALAKEA STREET, SUITE 2200
    		CITY:			HONOLULU
    		STATE:			HI
    		ZIP:			96813

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	HAWAIIAN ELECTRIC CO LTD
    		DATE OF NAME CHANGE:	19670212
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>he-20260327.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: he-20260327.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99
    <SEQUENCE>2
    <FILENAME>exhibit992025statsupp.htm
    <DESCRIPTION>EX-99
    <TEXT>
    Document 2 - file: exhibit992025statsupp.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>he-20260327.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: he-20260327.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>4
    <FILENAME>he-20260327_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: he-20260327_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>he-20260327_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: he-20260327_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>he-20260327_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: he-20260327_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>heii-53439_heix2025supplem.jpg
    <TEXT>
    Document 7 - file: heii-53439_heix2025supplem.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 9 - file: R1.htm

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

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 13 - file: FilingSummary.html

    Document 13 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>15
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>16
    <FILENAME>0000354707-26-000017-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: 0000354707-26-000017-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>17
    <FILENAME>he-20260327_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: he-20260327_htm.html

    Document 17 - RAW XML: he-20260327_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>