XML 138 R49.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Segment financial information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 790,040 us-gaap_Revenues | $ 867,096 us-gaap_Revenues | $ 798,657 us-gaap_Revenues | $ 783,749 us-gaap_Revenues | $ 832,503 us-gaap_Revenues | $ 829,168 us-gaap_Revenues | $ 794,567 us-gaap_Revenues | $ 782,232 us-gaap_Revenues | $ 3,239,542 us-gaap_Revenues | $ 3,238,470 us-gaap_Revenues | $ 3,374,995 us-gaap_Revenues
Depreciation and amortization |  |  |  |  |  |  |  |  | 181,238 us-gaap_DepreciationDepletionAndAmortization | 164,728 us-gaap_DepreciationDepletionAndAmortization | 158,347 us-gaap_DepreciationDepletionAndAmortization
Interest expense |  |  |  |  |  |  |  |  | 87,160 us-gaap_InterestExpense | 85,556 us-gaap_InterestExpense | 89,443 us-gaap_InterestExpense
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 261,922 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 247,747 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 217,407 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income taxes (benefit) |  |  |  |  |  |  |  |  | 91,712 us-gaap_IncomeTaxExpenseBenefit | 84,341 us-gaap_IncomeTaxExpenseBenefit | 76,859 us-gaap_IncomeTaxExpenseBenefit
Net income | 33,630 us-gaap_ProfitLoss | 48,286 us-gaap_ProfitLoss | 41,894 us-gaap_ProfitLoss | 46,400 us-gaap_ProfitLoss | 39,486 us-gaap_ProfitLoss | 48,707 us-gaap_ProfitLoss | 41,061 us-gaap_ProfitLoss | 34,152 us-gaap_ProfitLoss | 170,210 us-gaap_ProfitLoss | 163,406 us-gaap_ProfitLoss | 140,548 us-gaap_ProfitLoss
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 1,890 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable | 1,890 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable | 1,890 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable
Net income for common stock | 33,157 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 47,815 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 41,421 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 45,927 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 39,013 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 48,236 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 40,588 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 33,679 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 168,320 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 161,516 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 138,658 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Capital expenditures |  |  |  |  |  |  |  |  | 339,721 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 353,879 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 325,480 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Assets | 11,184,161 he_TangibleAssets |  |  |  | 10,340,044 he_TangibleAssets |  |  |  | 11,184,161 he_TangibleAssets | 10,340,044 he_TangibleAssets | 10,149,132 he_TangibleAssets
Electric utility |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Number of entities involved |  |  |  |  |  |  |  |  | 3 he_NumberOfEntitiesInvolvedInSegment / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember |  |
Revenues |  |  |  |  |  |  |  |  | 2,987,323 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 2,980,172 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 3,109,439 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 174,478 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 159,102 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 151,496 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Interest expense |  |  |  |  |  |  |  |  | 64,757 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 59,279 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 62,055 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 220,361 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 194,041 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 162,319 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Income taxes (benefit) |  |  |  |  |  |  |  |  | 80,725 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 69,117 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 61,048 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Net income |  |  |  |  |  |  |  |  | 139,636 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 124,924 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 101,271 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 1,995 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 1,995 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 1,995 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Net income for common stock |  |  |  |  |  |  |  |  | 137,641 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 122,929 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 99,276 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Capital expenditures |  |  |  |  |  |  |  |  | 311,574 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 342,485 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 310,091 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Assets | 5,590,457 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember |  |  |  | 5,087,129 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember |  |  |  | 5,590,457 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 5,087,129 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 5,108,793 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Bank |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 252,497 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 258,147 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 265,539 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 5,399 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 4,230 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 5,334 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Interest expense |  |  |  |  |  |  |  |  | 10,808 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 10,077 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 11,292 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 75,619 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 87,059 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 89,021 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Income taxes (benefit) |  |  |  |  |  |  |  |  | 24,127 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 29,525 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 30,384 us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Net income |  |  |  |  |  |  |  |  | 51,492 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 57,534 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 58,637 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 0 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 0 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 0 us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Net income for common stock |  |  |  |  |  |  |  |  | 51,492 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 57,534 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 58,637 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Capital expenditures |  |  |  |  |  |  |  |  | 28,073 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 11,193 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 14,979 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Assets | 5,565,241 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember |  |  |  | 5,243,824 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember |  |  |  | 5,565,241 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 5,243,824 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 5,041,673 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Other |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (278)us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 151 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 17 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,361 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 1,396 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 1,517 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Interest expense |  |  |  |  |  |  |  |  | 11,595 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 16,200 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 16,096 us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (34,058)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (33,353)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (33,933)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Income taxes (benefit) |  |  |  |  |  |  |  |  | (13,140)us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (14,301)us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (14,573)us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Net income |  |  |  |  |  |  |  |  | (20,918)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (19,052)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (19,360)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | (105)us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (105)us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (105)us-gaap_NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Net income for common stock |  |  |  |  |  |  |  |  | (20,813)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (18,947)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (19,255)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Capital expenditures |  |  |  |  |  |  |  |  | 74 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 201 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 410 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Assets | 28,463 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |  |  | 9,091 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |  |  | 28,463 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 9,091 he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | (1,334)he_TangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 3,239,542 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 3,238,470 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 3,374,995 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating Segments | Electric utility |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,987,299 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 2,980,139 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 3,109,353 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Operating Segments | Bank |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 252,497 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 258,147 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 265,539 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Operating Segments | Other |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (254)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 184 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 103 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember
Intersegment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Intersegment eliminations | Electric utility |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 24 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 33 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember | 86 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_ElectricUtilitySegmentMember
Intersegment eliminations | Bank |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember | 0 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = he_BankingSegmentMember
Intersegment eliminations | Other |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (24)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | $ (33)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | $ (86)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember

X
- Definition Represents the number of entities involved in the business of segment. + References No definition available. + Details
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Namespace Prefix: | he_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Balance represents total tangible assets. + References No definition available. + Details
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Namespace Prefix: | he_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35710027&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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