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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT- Balance Sheets (Details) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
ASSETS |  |  |  |
Cash and cash equivalents | 175,542,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 220,036,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 219,662,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 270,265,000 us-gaap_CashCashEquivalentsAndFederalFundsSold
Accounts receivable | 313,696,000 us-gaap_AccountsReceivableNet | 346,785,000 us-gaap_AccountsReceivableNet |  |
Property, plant and equipment, net | 4,148,774,000 us-gaap_PropertyPlantAndEquipmentNet | 3,865,514,000 us-gaap_PropertyPlantAndEquipmentNet |  |
Other assets | 541,542,000 us-gaap_OtherAssets | 512,627,000 us-gaap_OtherAssets |  |
Total assets | 11,184,161,000 us-gaap_Assets | 10,340,044,000 us-gaap_Assets |  |
Liabilities |  |  |  |
Accounts payable | 186,425,000 us-gaap_AccountsPayableCurrentAndNoncurrent | 212,331,000 us-gaap_AccountsPayableCurrentAndNoncurrent |  |
Long-term debt | 1,506,546,000 us-gaap_LongTermDebt | 1,492,945,000 us-gaap_LongTermDebt |  |
Retirement benefits liability | 632,845,000 us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent | 288,539,000 us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent |  |
Other | 531,230,000 us-gaap_OtherLiabilities | 524,224,000 us-gaap_OtherLiabilities |  |
Total liabilities | 9,358,440,000 us-gaap_Liabilities | 8,578,681,000 us-gaap_Liabilities |  |
Shareholders' equity |  |  |  |
Preferred stock, no par value, authorized 10,000,000 shares; issued: none | 0 us-gaap_PreferredStockValue | 0 us-gaap_PreferredStockValue |  |
Common stock, no par value, authorized 200,000,000 shares; issued and outstanding: 102,565,266 shares and 101,259,800 shares at December 31, 2014 and 2013, respectively | 1,521,297,000 us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount | 1,488,126,000 us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount |  |
Retained earnings | 297,509,000 us-gaap_RetainedEarningsAccumulatedDeficit | 255,694,000 us-gaap_RetainedEarningsAccumulatedDeficit |  |
Accumulated other comprehensive loss | (27,378,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (16,750,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (26,423,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (19,137,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Total shareholders' equity | 1,791,428,000 us-gaap_StockholdersEquity | 1,727,070,000 us-gaap_StockholdersEquity | 1,593,865,000 us-gaap_StockholdersEquity | 1,528,706,000 us-gaap_StockholdersEquity
Total liabilities and shareholders' equity | 11,184,161,000 us-gaap_LiabilitiesAndStockholdersEquity | 10,340,044,000 us-gaap_LiabilitiesAndStockholdersEquity |  |
Aggregate principal payments |  |  |  |
2015 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |  |  |
2016 | 200,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |  |  |
2017 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |  |  |
2018 | 50,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |  |  |
2019 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |  |  |
Preferred stock, authorized shares | 10,000,000 us-gaap_PreferredStockSharesAuthorized | 10,000,000 us-gaap_PreferredStockSharesAuthorized |  |
Common stock, authorized shares | 200,000,000 us-gaap_CommonStockSharesAuthorized | 200,000,000 us-gaap_CommonStockSharesAuthorized |  |
Common stock, issued shares | 102,565,266 us-gaap_CommonStockSharesIssued | 101,259,800 us-gaap_CommonStockSharesIssued |  |
Common stock, outstanding shares | 102,565,266 us-gaap_CommonStockSharesOutstanding | 101,259,800 us-gaap_CommonStockSharesOutstanding |  |
Deferred income taxes | 631,734,000 us-gaap_DeferredTaxLiabilitiesNoncurrent | 529,260,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
Self-insured United States longshore & Harbor bond |  |  |  |
Aggregate principal payments |  |  |  |
Guarantee obligation maximum exposure | 200,000 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_UnderlyingAssetClassAxis = he_SelfInsuredUnitedStatesLongshoreAndHorborBondMember |  |  |
Self-insured automobile bond |  |  |  |
Aggregate principal payments |  |  |  |
Guarantee obligation maximum exposure | 600,000 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_UnderlyingAssetClassAxis = he_SelfInsuredAutomobileBondMember |  |  |
HEI term loan LIBOR plus .90% due 2016 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 125,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_TermLoanLIBORPlus.90PercentDue2016Member | 0 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_TermLoanLIBORPlus.90PercentDue2016Member |  |
HEI medium-term note 6.51%, due 2014 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 0 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member | 100,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member | 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member |  |
HEI senior note 4.41%, due 2016 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 75,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member | 75,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 4.41%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member | 4.41%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member |  |
HEI senior note 5.67%, due 2021 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 50,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member | 50,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 5.67%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member | 5.67%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member |  |
HEI senior note 3.99%, due 2023 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 50,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member | 50,000,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 3.99%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member | 3.99%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member |  |
Hawaiian Electric Industries, Inc. |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 276,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 571,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 18,021,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,765,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Accounts receivable | 1,991,000 us-gaap_AccountsReceivableNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,661,000 us-gaap_AccountsReceivableNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Property, plant and equipment, net | 4,917,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,419,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred income tax assets | 15,922,000 us-gaap_DeferredTaxAssetsNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 10,057,000 us-gaap_DeferredTaxAssetsNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other assets | 11,070,000 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 9,550,000 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Investments in subsidiaries, at equity | 2,224,452,000 he_InvestmentInSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,122,841,000 he_InvestmentInSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total assets | 2,258,628,000 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,150,099,000 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Liabilities |  |  |  |
Accounts payable | 1,993,000 us-gaap_AccountsPayableCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 817,000 us-gaap_AccountsPayableCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Interest payable | 2,583,000 us-gaap_InterestPayableCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,630,000 us-gaap_InterestPayableCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Notes payable to subsidiaries | 7,857,000 he_NotesPayableToSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 7,936,000 he_NotesPayableToSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Commercial paper | 118,972,000 us-gaap_CommercialPaper / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 105,482,000 us-gaap_CommercialPaper / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Long-term debt | 300,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 275,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Retirement benefits liability | 32,030,000 us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 21,559,000 us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other | 3,765,000 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 7,605,000 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities | 467,200,000 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 423,029,000 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Shareholders' equity |  |  |  |
Preferred stock, no par value, authorized 10,000,000 shares; issued: none | 0 us-gaap_PreferredStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PreferredStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Common stock, no par value, authorized 200,000,000 shares; issued and outstanding: 102,565,266 shares and 101,259,800 shares at December 31, 2014 and 2013, respectively | 1,521,297,000 us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,488,126,000 us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Retained earnings | 297,509,000 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 255,694,000 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Accumulated other comprehensive loss | (27,378,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (16,750,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total shareholders' equity | 1,791,428,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,727,070,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities and shareholders' equity | 2,258,628,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,150,099,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Aggregate principal payments |  |  |  |
2015 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
2016 | 200,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
2017 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
2018 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
2019 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Preferred stock, authorized shares | 10,000,000 us-gaap_PreferredStockSharesAuthorized / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 10,000,000 us-gaap_PreferredStockSharesAuthorized / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Common stock, authorized shares | 200,000,000 us-gaap_CommonStockSharesAuthorized / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 200,000,000 us-gaap_CommonStockSharesAuthorized / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Common stock, issued shares | 102,565,266 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 101,259,800 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Common stock, outstanding shares | 102,565,266 us-gaap_CommonStockSharesOutstanding / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 101,259,800 us-gaap_CommonStockSharesOutstanding / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred income taxes |  | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Hawaiian Electric Industries, Inc. | HEI term loan LIBOR plus .90% due 2016 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 125,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_TermLoanLIBORPlus.90PercentDue2016Member | 0 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_TermLoanLIBORPlus.90PercentDue2016Member |  |
Hawaiian Electric Industries, Inc. | HEI medium-term note 6.51%, due 2014 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 0 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member | 100,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member | 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_MediumTermNotes6.51PercentDue2014Member |  |
Hawaiian Electric Industries, Inc. | HEI senior note 4.41%, due 2016 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 75,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member | 75,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 4.41%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member | 4.41%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes4.41PercentDue2016Member |  |
Hawaiian Electric Industries, Inc. | HEI senior note 5.67%, due 2021 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 50,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member | 50,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 5.67%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member | 5.67%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_SeniorNotes5.67PercentDue2021Member |  |
Hawaiian Electric Industries, Inc. | HEI senior note 3.99%, due 2023 |  |  |  |
Liabilities |  |  |  |
Long-term debt | 50,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member | 50,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member |  |
Shareholders' equity |  |  |  |
Interest rate of medium-term notes (as a percent) | 3.99%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member | 3.99%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_LongtermDebtTypeAxis = he_Series2013ASeniorNotes3.99PercentDue2023Member |  |
As previously filed | Hawaiian Electric Industries, Inc. |  |  |  |
ASSETS |  |  |  |
Deferred income tax assets |  | 1,594,000 us-gaap_DeferredTaxAssetsNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Other assets |  | 23,679,000 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Total assets |  | 2,155,765,000 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Liabilities |  |  |  |
Other |  | 1,886,000 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Total liabilities |  | 428,695,000 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Shareholders' equity |  |  |  |
Total liabilities and shareholders' equity |  | 2,155,765,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Aggregate principal payments |  |  |  |
Deferred income taxes |  | 11,385,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioPreviouslyReportedMember |  |
Difference |  |  |  |
ASSETS |  |  |  |
Other assets |  | (7,000,000)us-gaap_OtherAssets / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Difference | Hawaiian Electric Industries, Inc. |  |  |  |
ASSETS |  |  |  |
Deferred income tax assets |  | 8,463,000 us-gaap_DeferredTaxAssetsNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Other assets |  | (14,129,000)us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Total assets |  | (5,666,000)us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Liabilities |  |  |  |
Other |  | 5,719,000 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Total liabilities |  | (5,666,000)us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Shareholders' equity |  |  |  |
Total liabilities and shareholders' equity |  | (5,666,000)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
Aggregate principal payments |  |  |  |
Deferred income taxes |  | $ (11,385,000)us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_StatementScenarioAxis = us-gaap_RestatementAdjustmentMember |  |
LIBOR | HEI term loan LIBOR plus .90% due 2016 |  |  |  |
Aggregate principal payments |  |  |  |
Line of credit facility basis point spread (as a percent) | 0.90%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = he_TermLoanLIBORPlus.90PercentDue2016Member / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |

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Namespace Prefix: | he_
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