XML 61 R9.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common stock | Retained earnings | Accumulated other comprehensive income (loss) | Hawaiian Electric Company, Inc. and Subsidiaries | Hawaiian Electric Company, Inc. and Subsidiaries Common stock | Hawaiian Electric Company, Inc. and Subsidiaries Premium on capital stock | Hawaiian Electric Company, Inc. and Subsidiaries Retained earnings | Hawaiian Electric Company, Inc. and Subsidiaries Accumulated other comprehensive income (loss)
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2011 | $ 1,528,706 us-gaap_StockholdersEquity | $ 1,349,446 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | $ 198,397 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (19,137)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 1,402,841 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | $ 94,911 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 426,921 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 881,041 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (32)us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2011 |  | 96,038,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 14,234,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 138,658 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 138,658 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | 99,276 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | 99,276 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive income (loss), net of tax benefits | (7,286)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  | (7,286)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (938)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  | (938)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Issuance of common stock: Dividend reinvestment and stock purchase plan | 41,295 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan | 41,295 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  | 44,001 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan (in shares) |  | 1,560,000 he_StockIssuedDuringPeriodSharesDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans | 8,196 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther | 8,196 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans (in shares) |  | 330,000 he_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Expenses and other, net | 4,547 he_StockIssuedDuringPeriodValueExpensesandOtherNet | 4,547 he_StockIssuedDuringPeriodValueExpensesandOtherNet / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock, net of expenses |  |  |  |  |  | 431,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Issuance of common stock, net of expenses (in shares) |  |  |  |  | 44,001 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 2,877 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 41,124 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |
Dividend equivalents paid on equity-classified awards | (101)he_DividendAndDividendEquivalentsPaidOnEquityClassifiedAwards |  | (101)he_DividendAndDividendEquivalentsPaidOnEquityClassifiedAwards / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |  |  |
Common stock dividends | (120,150)us-gaap_DividendsCommonStockCash |  | (120,150)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (73,044)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | (73,044)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Ending Balance at Dec. 31, 2012 | 1,593,865 us-gaap_StockholdersEquity | 1,403,484 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | 216,804 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (26,423)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,472,136 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 97,788 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 468,045 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 907,273 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (970)us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2012 |  | 97,928,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 14,665,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 33,679 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 24,429 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Ending Balance at Mar. 31, 2013 |  |  |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2012 | 1,593,865 us-gaap_StockholdersEquity | 1,403,484 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | 216,804 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (26,423)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,472,136 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 97,788 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 468,045 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 907,273 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (970)us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2012 |  | 97,928,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 14,665,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 161,516 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 161,516 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | 122,929 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | 122,929 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive income (loss), net of tax benefits | 9,673 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  | 9,673 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,578 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  | 1,578 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Partial settlement of equity forward (in shares) |  | 1,300,000 he_StockIssuedDuringPeriodSharesPartialSettlementofEquityForward / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Partial settlement of equity forward | 33,409 he_StockIssuedDuringPeriodValuePartialSettlementofEquityForward | 33,409 he_StockIssuedDuringPeriodValuePartialSettlementofEquityForward / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan | 41,692 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan | 41,692 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  | 78,499 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan (in shares) |  | 1,612,000 he_StockIssuedDuringPeriodSharesDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans | 9,203 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther | 9,203 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans (in shares) |  | 420,000 he_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Expenses and other, net | 338 he_StockIssuedDuringPeriodValueExpensesandOtherNet | 338 he_StockIssuedDuringPeriodValueExpensesandOtherNet / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock, net of expenses |  |  |  |  |  | 764,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Issuance of common stock, net of expenses (in shares) |  |  |  |  | 78,499 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 5,092 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 73,407 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |
Common stock dividends | (122,626)us-gaap_DividendsCommonStockCash |  | (122,626)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (81,578)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | (81,578)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Ending Balance at Dec. 31, 2013 | 1,727,070 us-gaap_StockholdersEquity | 1,488,126 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | 255,694 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (16,750)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,593,564 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 102,880 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 541,452 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 948,624 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 608 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2013 | 101,259,800 us-gaap_CommonStockSharesIssued | 101,260,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 15,429,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Beginning Balance at Sep. 30, 2013 |  |  |  |  |  |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 39,013 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 31,990 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Ending Balance at Dec. 31, 2013 | 1,727,070 us-gaap_StockholdersEquity |  |  |  | 1,593,564 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Balance (in shares) at Dec. 31, 2013 | 101,259,800 us-gaap_CommonStockSharesIssued |  |  |  |  |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 45,927 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 35,420 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Ending Balance at Mar. 31, 2014 |  |  |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2013 | 1,727,070 us-gaap_StockholdersEquity | 1,488,126 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | 255,694 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (16,750)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,593,564 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 102,880 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 541,452 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 948,624 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 608 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2013 | 101,259,800 us-gaap_CommonStockSharesIssued | 101,260,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 15,429,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 168,320 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 168,320 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | 137,641 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | 137,641 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive income (loss), net of tax benefits | (10,628)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  | (10,628)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (563)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  | (563)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Partial settlement of equity forward (in shares) |  | 1,000,000 he_StockIssuedDuringPeriodSharesPartialSettlementofEquityForward / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Partial settlement of equity forward | 24,873 he_StockIssuedDuringPeriodValuePartialSettlementofEquityForward | 24,873 he_StockIssuedDuringPeriodValuePartialSettlementofEquityForward / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan | 2,461 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan | 2,461 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  | 39,994 he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Issuance of common stock: Dividend reinvestment and stock purchase plan (in shares) |  | 95,000 he_StockIssuedDuringPeriodSharesDividendReinvestmentAndStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans | 6,816 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther | 6,816 he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Retirement savings and other plans (in shares) |  | 210,000 he_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock: Expenses and other, net | (979)he_StockIssuedDuringPeriodValueExpensesandOtherNet | (979)he_StockIssuedDuringPeriodValueExpensesandOtherNet / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  |  |  |  |
Issuance of common stock, net of expenses |  |  |  |  |  | 376,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Issuance of common stock, net of expenses (in shares) |  |  |  |  | 39,994 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 2,508 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 37,486 us-gaap_StockIssuedDuringPeriodValueNewIssues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |
Common stock dividends | (126,505)us-gaap_DividendsCommonStockCash |  | (126,505)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (88,492)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  | (88,492)us-gaap_DividendsCommonStockCash / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Ending Balance at Dec. 31, 2014 | 1,791,428 us-gaap_StockholdersEquity | 1,521,297 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember | 297,509 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (27,378)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 1,682,144 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember | 105,388 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 578,938 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 997,773 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 45 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance (in shares) at Dec. 31, 2014 | 102,565,266 us-gaap_CommonStockSharesIssued | 102,565,000 us-gaap_CommonStockSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember |  |  |  | 15,805,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |
Beginning Balance at Sep. 30, 2014 |  |  |  |  |  |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income for common stock | 33,157 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 29,112 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Ending Balance at Dec. 31, 2014 | $ 1,791,428 us-gaap_StockholdersEquity |  |  |  | $ 1,682,144 us-gaap_StockholdersEquity / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember |  |  |  |
Balance (in shares) at Dec. 31, 2014 | 102,565,266 us-gaap_CommonStockSharesIssued |  |  |  |  |  |  |  |

X
- Definition This element represents amount of dividend and dividend equivalents paid on equity awards classified as equity. + References No definition available. + Details
Name: | he_DividendAndDividendEquivalentsPaidOnEquityClassifiedAwards
Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares that are newly issued during the period from a dividend reinvestment and stock purchase plan (DRIP). The DRIP allows the holder of the stock to reinvest dividends paid to them by the entity in stock of the entity and to make optional cash investments in stock of the entity. + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodSharesDividendReinvestmentAndStockPurchasePlan
Namespace Prefix: | he_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Issued During Period, Shares, Partial Settlement of Equity Forward + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodSharesPartialSettlementofEquityForward
Namespace Prefix: | he_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan, net of stock value of such awards forfeited, and other plans (e.g., retirement savings plans). Stock issued could result from the issuance of restricted stock, the exercise of stock options, and/or other employee benefit plans. + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodSharesShareBasedCompensationAndOther
Namespace Prefix: | he_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value of stock that is newly issued during the period from a dividend reinvestment and stock purchase plan (DRIP). The DRIP allows the holder of the stock to reinvest dividends paid to them by the entity in stock of the entity and to make optional cash investments in stock of the entity. + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan
Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Expenses and other activity related to the issuance of common stock, net. + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodValueExpensesandOtherNet
Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Stock Issued During Period, Value, Partial Settlement of Equity Forward + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodValuePartialSettlementofEquityForward
Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan, net of stock value of such awards forfeited, and other plans (e.g., retirement savings plans). Stock issued could result from the issuance of restricted stock, the exercise of stock options, and/or other employee benefit plans. + References No definition available. + Details
Name: | he_StockIssuedDuringPeriodValueShareBasedCompensationAndOther
Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_DividendsCommonStockCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncreaseDecreaseInStockholdersEquityRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
Name: | us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569643-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
Name: | us-gaap_StockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration