Condensed Consolidated Balance Sheets (unaudited) - HECO (parenthetical) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Shareholders’ equity
Common stock, authorized shares (in shares)	400,000,000	400,000,000
Common stock, shares outstanding (in shares)	172,620,476	172,465,608
Hawaiian Electric Company, Inc. and Subsidiaries
Utility property, plant and equipment
Accumulated depreciation on other property, plant and equipment	$ 1	$ 1
Shareholders’ equity
Common stock, par value (in dollars per share)	$ 6.67	$ 6.67
Common stock, authorized shares (in shares)	50,000,000	50,000,000
Common stock, shares outstanding (in shares)	17,854,278	17,854,278