XML 117 R84.htm IDEA: XBRL DOCUMENT v2.4.1.9
Bank segment (HEI only) Securities Sold Under Agreements to Repurchase (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Securities sold under agreements to repurchase      
Callable quarterly at par until maturity in 2016 $ 50,300,000he_AssetsSoldunderAgreementstoRepurchaseAmountCallableQuarterlyatParUntilMaturity    
Overnight      
Securities sold under agreements to repurchase      
Repurchase liability 84,758,000us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOvernightMember
   
Weighted-average interest rate 0.15%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOvernightMember
   
1 to 29 days      
Securities sold under agreements to repurchase      
Repurchase liability 0us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityUpTo30DaysMember
   
Weighted-average interest rate 0.00%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityUpTo30DaysMember
   
30 to 90 days      
Securities sold under agreements to repurchase      
Repurchase liability 0us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_Maturity30To90DaysMember
   
Weighted-average interest rate 0.00%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_Maturity30To90DaysMember
   
Over 90 days      
Securities sold under agreements to repurchase      
Repurchase liability 105,898,000us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOver90DaysMember
   
Weighted-average interest rate 2.50%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOver90DaysMember
   
Collateralized by mortgage-related securities and federal agency obligations      
Securities sold under agreements to repurchase      
Collateralized by mortgage-related securities and federal agency obligations at fair value plus accrued interest 230,725,000he_AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember
   
Collateralized by mortgage-related securities and federal agency obligations | Overnight      
Securities sold under agreements to repurchase      
Collateralized by mortgage-related securities and federal agency obligations at fair value plus accrued interest 114,883,000he_AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOvernightMember
   
Collateralized by mortgage-related securities and federal agency obligations | 1 to 29 days      
Securities sold under agreements to repurchase      
Collateralized by mortgage-related securities and federal agency obligations at fair value plus accrued interest 0he_AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityUpTo30DaysMember
   
Collateralized by mortgage-related securities and federal agency obligations | 30 to 90 days      
Securities sold under agreements to repurchase      
Collateralized by mortgage-related securities and federal agency obligations at fair value plus accrued interest 0he_AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_Maturity30To90DaysMember
   
Collateralized by mortgage-related securities and federal agency obligations | Over 90 days      
Securities sold under agreements to repurchase      
Collateralized by mortgage-related securities and federal agency obligations at fair value plus accrued interest 115,842,000he_AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_USGovernmentAgenciesDebtSecuritiesAndMortgageBackedSecuritiesMember
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis
= us-gaap_MaturityOver90DaysMember
   
Identical securities      
Securities sold under agreements to repurchase      
Repurchase liability $ 190,656,000us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember
$ 145,000,000us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember
$ 146,000,000us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember
Weighted-average interest rate 1.45%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember
1.75%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember
1.74%us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
/ us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis
= he_IdenticalSecuritiesMember