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Electric utility segment Cumulative Preferred Stock (Details) (USD $) | Dec. 31, 2014
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HECO | Multiple Series Preferred Stock |
Class of Stock [Line Items] |
Preferred Stock Voluntary Liquidation Preference | $ 20 he_PreferredStockVoluntaryLiquidationPreference / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = he_MultipleSeriesPreferredStockMember
Preferred Stock, Redemption Price Per Share | $ 21 us-gaap_PreferredStockRedemptionPricePerShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = he_MultipleSeriesPreferredStockMember
HECO | Series I Preferred Stock |
Class of Stock [Line Items] |
Preferred Stock Voluntary Liquidation Preference | $ 20 he_PreferredStockVoluntaryLiquidationPreference / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = he_SeriesIPreferredStockMember
Preferred Stock, Redemption Price Per Share | $ 20 us-gaap_PreferredStockRedemptionPricePerShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementClassOfStockAxis = he_SeriesIPreferredStockMember
Hawaii Electric Light Company, Inc. (HELCO) | Series G Preferred Stock |
Class of Stock [Line Items] |
Preferred Stock Voluntary Liquidation Preference | $ 100 he_PreferredStockVoluntaryLiquidationPreference / dei_LegalEntityAxis = he_SubsidiariesTwoMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesGPreferredStockMember
Preferred Stock, Redemption Price Per Share | $ 100 us-gaap_PreferredStockRedemptionPricePerShare / dei_LegalEntityAxis = he_SubsidiariesTwoMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesGPreferredStockMember
MECO | Series H Preferred Stock |
Class of Stock [Line Items] |
Preferred Stock Voluntary Liquidation Preference | $ 100 he_PreferredStockVoluntaryLiquidationPreference / dei_LegalEntityAxis = he_SubsidiariesThreeMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesHPreferredStockMember
Preferred Stock, Redemption Price Per Share | $ 100 us-gaap_PreferredStockRedemptionPricePerShare / dei_LegalEntityAxis = he_SubsidiariesThreeMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesHPreferredStockMember

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- Definition The per share voluntary liquidation preference of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). + References No definition available. + Details
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- Definition The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 + Details
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