v3.24.4
Cover
Dec. 30, 2024
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 30, 2024
Entity File Number 1-8503
Entity Registrant Name Hawaiian Electric Industries, Inc.
Entity Central Index Key 0000354707
Entity Tax Identification Number 99-0208097
Entity Incorporation, State or Country Code HI
Entity Address, Address Line One 1001 Bishop Street
Entity Address, Address Line Two Suite 2900
Entity Address, City or Town Honolulu
Entity Address, State or Province HI
Entity Address, Postal Zip Code 96813
City Area Code 808
Local Phone Number 543-5662
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, Without Par Value
Trading Symbol HE
Security Exchange Name NYSE
Entity Emerging Growth Company false