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v2.4.1.9

Bank segment (HEI only) Investment Securities (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Amortized Cost |  |  |
Due in one year or less | $ 0 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost |  |
Due after one year through five years | 34,953,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost |  |
Due after five years through ten years | 47,131,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost |  |
Due after ten years | 37,423,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost |  |
Total amortized cost | 119,507,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis |  |
Mortgage-related securities-FNMA, FHLMC and GNMA - amortized cost | 430,120,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost |  |
Total available-for-sale securities, amortized cost | 549,627,000 us-gaap_AvailableForSaleSecuritiesAmortizedCost | 535,090,000 us-gaap_AvailableForSaleSecuritiesAmortizedCost |
Fair value |  |  |
Due in one year or less | 0 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue |  |
Due after one year through five years | 35,007,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue |  |
Due after five years through ten years | 47,885,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue |  |
Due after ten years | 36,668,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue |  |
Total fair value | 119,560,000 us-gaap_AvailableForSaleSecuritiesDebtSecurities |  |
Mortgage-related securities-FNMA, FHLMC and GNMA - fair value | 430,834,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue |  |
Estimated fair value | 550,394,000 us-gaap_AvailableForSaleSecurities | 529,007,000 us-gaap_AvailableForSaleSecurities |
Gains (losses) from sales of available-for-sale investments |  |  |
Proceeds | 79,564,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 71,367,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 3,548,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Available-for-sale securities pledged at carrying value | 88,600,000 he_AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateral | 87,100,000 he_AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateral |
Available-for-sale securities, pledged at carrying value as collateral for securities sold under agreements to repurchase | 230,200,000 he_AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateralForSecuritiesSoldUnderRepurchaseAgreement | 187,100,000 he_AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateralForSecuritiesSoldUnderRepurchaseAgreement |
Interest income from taxable and non-taxable investment securities |  |  |
Taxable | 11,666,000 us-gaap_InterestIncomeSecuritiesTaxable | 11,474,000 us-gaap_InterestIncomeSecuritiesTaxable | 12,309,000 us-gaap_InterestIncomeSecuritiesTaxable
Non-taxable | 279,000 us-gaap_InterestIncomeSecuritiesTaxExempt | 1,621,000 us-gaap_InterestIncomeSecuritiesTaxExempt | 1,513,000 us-gaap_InterestIncomeSecuritiesTaxExempt
Total | 11,945,000 us-gaap_InterestIncomeOperating | 13,095,000 us-gaap_InterestIncomeOperating | 13,822,000 us-gaap_InterestIncomeOperating
Mortgage-related securities - FNMA, FHLMC and GNMA |  |  |
Gains (losses) from sales of available-for-sale investments |  |  |
Proceeds | 79,600,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 71,400,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 3,500,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember
Gross gains | 2,800,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 1,200,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 100,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember
Gross losses | 0 us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 0 us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember | 0 us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesMember
U.S. Treasury and federal agency obligations |  |  |
Amortized Cost |  |  |
Total available-for-sale securities, amortized cost |  | 83,193,000 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember |
Fair value |  |  |
Estimated fair value |  | 80,973,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember |
Municipal bonds |  |  |
Amortized Cost |  |  |
Total available-for-sale securities, amortized cost |  | 76,904,000 us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MunicipalBondsMember |
Fair value |  |  |
Estimated fair value |  | 78,590,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MunicipalBondsMember |
FHLB Seattle |  |  |
Interest income from taxable and non-taxable investment securities |  |  |
Cost method investments | $ 69,300,000 us-gaap_CostMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = he_FHLBSeattleMember | $ 92,500,000 us-gaap_CostMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = he_FHLBSeattleMember |

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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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