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Cash flows (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Supplemental disclosures of cash flow information |  |
Interest paid to non-affiliates, net of amounts capitalized | $ 133 | $ 75
Income taxes paid (including refundable credits) | 18 | 28
Income taxes refunded (including refundable credits) | 0 | 1
Supplemental disclosures of noncash activities |  |
Estimated fair value of noncash contributions in aid of construction (investing) | 7 | 6
Unpaid invoices and accruals for capital expenditures, balance, end of period (investing) | 26 | 50
Right-of-use assets obtained in exchange for finance lease obligations (financing) | 108 | 76
Right-of-use assets obtained in exchange for operating lease obligations (investing) | 1 | 1
Common stock issued (gross) for director and executive/management compensation (financing) | 3 | 8
Obligations to fund low income housing investments (investing) | 0 | 7
Loans transferred from held for investment to held for sale (investing) | 29 | 72
Transfer of retail repurchase agreements to deposit liabilities (financing) | 0 | 98
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Supplemental disclosures of cash flow information |  |
Interest paid to non-affiliates, net of amounts capitalized | 44 | 33
Income taxes paid (including refundable credits) | 27 | 38
Income taxes refunded (including refundable credits) | 0 | 2
Supplemental disclosures of noncash activities |  |
Estimated fair value of noncash contributions in aid of construction (investing) | 7 | 6
Unpaid invoices and accruals for capital expenditures, balance, end of period (investing) | 25 | 49
Right-of-use assets obtained in exchange for finance lease obligations (financing) | $ 107 | $ 76

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