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Leases - Amounts Related to Lease Cost and Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 66,971 | $ 80,254 |
Variable lease cost | 250,130 | 271,832 |
Sublease income | (2,675) | (2,515) |
Total lease cost | 314,426 | 349,571 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 1,196 |  |
Interest on lease liabilities | 806 |  |
Total finance lease cost | 2,002 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 59,193 | $ 73,375 |
Operating cash flows from financing leases | 806 |  |
Financing cash flows from financing leases | $ 849 |  |
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 7 years 8 months 12 days | 6 years 1 month 6 days |
Finance leases | 19 years 2 months 12 days |  |
Weighted-average discount rate: |  |  |
Operating leases | 3.04% | 3.18% |
Finance leases | 3.92% |  |
Other leases |  |  |
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 20,811 | $ 14,184 |
Variable lease cost | 8,931 | 14,360 |
Sublease income | (2,675) | (2,515) |
Total lease cost | 27,067 | 26,029 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 188 |  |
Interest on lease liabilities | 20 |  |
Total finance lease cost | 208 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 19,143 | $ 11,239 |
Operating cash flows from financing leases | 20 |  |
Financing cash flows from financing leases | $ 179 |  |
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 8 years 1 month 6 days | 9 years 1 month 6 days |
Finance leases | 2 years 4 months 24 days |  |
Weighted-average discount rate: |  |  |
Operating leases | 2.96% | 2.84% |
Finance leases | 3.77% |  |
PPAs classified as leases |  |  |
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 46,160 | $ 66,070 |
Variable lease cost | 241,199 | 257,472 |
Sublease income | 0 | 0 |
Total lease cost | 287,359 | 323,542 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 1,008 |  |
Interest on lease liabilities | 786 |  |
Total finance lease cost | 1,794 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 40,050 | $ 62,136 |
Operating cash flows from financing leases | 786 |  |
Financing cash flows from financing leases | $ 670 |  |
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 5 years | 2 years 6 months |
Finance leases | 19 years 7 months 6 days |  |
Weighted-average discount rate: |  |  |
Operating leases | 3.50% | 3.63% |
Finance leases | 3.92% |  |
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 61,190 | $ 74,648 |
Variable lease cost | 247,351 | 269,058 |
Sublease income | (2,675) | (2,515) |
Total lease cost | 305,866 | 341,191 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 1,008 |  |
Interest on lease liabilities | 786 |  |
Total finance lease cost | 1,794 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 54,118 | 68,304 |
Operating cash flows from financing leases | 786 |  |
Financing cash flows from financing leases | $ 670 | $ 0 | $ 0
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 6 years 9 months 18 days | 5 years 10 months 24 days |
Finance leases | 19 years 7 months 6 days |  |
Weighted-average discount rate: |  |  |
Operating leases | 3.05% | 3.31% |
Finance leases | 3.92% |  |
Hawaiian Electric Company, Inc. and Subsidiaries | Other leases |  |  |
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 15,030 | $ 8,578 |
Variable lease cost | 6,152 | 11,586 |
Sublease income | (2,675) | (2,515) |
Total lease cost | 18,507 | 17,649 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 0 |  |
Interest on lease liabilities | 0 |  |
Total finance lease cost | 0 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 14,068 | $ 6,168 |
Operating cash flows from financing leases | 0 |  |
Financing cash flows from financing leases | $ 0 |  |
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 7 years 3 months 18 days | 10 years |
Finance leases | 0 years |  |
Weighted-average discount rate: |  |  |
Operating leases | 2.94% | 2.98% |
Finance leases | 0.00% |  |
Hawaiian Electric Company, Inc. and Subsidiaries | PPAs classified as leases |  |  |
Operating Lease Cost [Abstract] |  |  |
Operating lease cost | $ 46,160 | $ 66,070 |
Variable lease cost | 241,199 | 257,472 |
Sublease income | 0 | 0 |
Total lease cost | 287,359 | 323,542 |
Finance lease costs: |  |  |
Amortization of right-of-use assets | 1,008 |  |
Interest on lease liabilities | 786 |  |
Total finance lease cost | 1,794 |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Cash paid for amounts included in the measurement of lease liabilities—Operating cash flows from operating leases | 40,050 | $ 62,136 |
Operating cash flows from financing leases | 786 |  |
Financing cash flows from financing leases | $ 670 |  |
Weighted-average remaining lease term (in years): |  |  |
Operating leases | 5 years | 2 years 6 months |
Finance leases | 19 years 7 months 6 days |  |
Weighted-average discount rate: |  |  |
Operating leases | 3.50% | 3.63% |
Finance leases | 3.92% |  |

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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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