2104100 - Disclosure - Bank segment (HEI only) link:presentationLink link:calculationLink link:definitionLink 2404426 - Disclosure - Bank segment (HEI only) - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2404411 - Disclosure - Bank segment (HEI only) - Allowance For Loan Losses (Details) link:presentationLink link:calculationLink link:definitionLink 2404407 - Disclosure - Bank segment (HEI only) - Available For Sale Investment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2404406 - Disclosure - Bank segment (HEI only) - Balance Sheets Data (Details) link:presentationLink link:calculationLink link:definitionLink 2404427 - Disclosure - Bank segment (HEI only) - Capital And Ratio (Details) link:presentationLink link:calculationLink link:definitionLink 2404415 - Disclosure - Bank segment (HEI only) - Carrying Amount of Impaired Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2404414 - Disclosure - Bank segment (HEI only) - Credit Risk Profile Based on Aging Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2404413 - Disclosure - Bank segment (HEI only) - Credit Risk Profile Based on Payment Activity for Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2404412 - Disclosure - Bank segment (HEI only) - Credit Risk Profile by Internally Assigned Grade for Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2404422 - Disclosure - Bank segment (HEI only) - Deposit Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2404428 - Disclosure - Bank segment (HEI only) - Derivative Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2404425 - Disclosure - Bank segment (HEI only) - FHLB Advances (Details) link:presentationLink link:calculationLink link:definitionLink 2404408 - Disclosure - Bank segment (HEI only) - Investment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2404408 - Disclosure - Bank segment (HEI only) - Investment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2404421 - Disclosure - Bank segment (HEI only) - Key Assumptions Used in Estimating the Fair Value of ASB's Mortgage Servicing Rights (Details) link:presentationLink link:calculationLink link:definitionLink 2404417 - Disclosure - Bank segment (HEI only) - Loan Modifications (Details) link:presentationLink link:calculationLink link:definitionLink 2404409 - Disclosure - Bank segment (HEI only) - Loans Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 2404410 - Disclosure - Bank segment (HEI only) - Loans Receivable, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2404420 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights and Valuation Allowance Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 2404419 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights (Details) link:presentationLink link:calculationLink link:definitionLink 2404418 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2404429 - Disclosure - Bank segment (HEI only) - Off Balance Sheet Arrangements and Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Bank segment (HEI only) - Reconciliation of Income (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Bank segment (HEI only) - Reconciliation of Income (Details) link:presentationLink link:calculationLink link:definitionLink 2404424 - Disclosure - Bank segment (HEI only) - Securities Sold Under Agreements to Repurchase (Details) link:presentationLink link:calculationLink link:definitionLink 2404423 - Disclosure - Bank segment (HEI only) - Securities Sold Under Agreements to Repurchase, Including Related Collateral Received From or Pledged to Counterparties (Details) link:presentationLink link:calculationLink link:definitionLink 2404405 - Disclosure - Bank segment (HEI only) - Statements of Comprehensive Income - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2404404 - Disclosure - Bank segment (HEI only) - Statements of Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Bank segment (HEI only) - Statements of Income Data (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Bank segment (HEI only) (Tables) link:presentationLink link:calculationLink link:definitionLink 2404416 - Disclosure - Bank segment (HEI only) - TDR Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Cash flows link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - Cash flows (Details) link:presentationLink link:calculationLink link:definitionLink 2312301 - Disclosure - Cash flows (Tables) link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1008000 - Statement - Consolidated Balance Sheets - HECO link:presentationLink link:calculationLink link:definitionLink 1008501 - Statement - Consolidated Balance Sheets - HECO (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003501 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1009000 - Statement - Consolidated Statements of Capitalization - HECO link:presentationLink link:calculationLink link:definitionLink 1009000 - Statement - Consolidated Statements of Capitalization - HECO link:presentationLink link:calculationLink link:definitionLink 1009501 - Statement - Consolidated Statements of Capitalization - HECO (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 1011000 - Statement - Consolidated Statements of Cash Flows - HECO link:presentationLink link:calculationLink link:definitionLink 1010000 - Statement - Consolidated Statements of Changes in Common Stock Equity - HECO link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Consolidated Statements of Changes in Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 1004501 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 1007000 - Statement - Consolidated Statements of Comprehensive Income - HECO link:presentationLink link:calculationLink link:definitionLink 1002501 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1007501 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) - HECO link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 1006000 - Statement - Consolidated Statements of Income - HECO link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - Electric utility segment link:presentationLink link:calculationLink link:definitionLink 2403407 - Disclosure - Electric utility segment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2403409 - Disclosure - Electric utility segment - Annual Decoupling Filings (Details) link:presentationLink link:calculationLink link:definitionLink 2403412 - Disclosure - Electric utility segment - Consolidating Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 2403414 - Disclosure - Electric utility segment - Consolidating Statement of Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 2403411 - Disclosure - Electric utility segment - Consolidating Statement of Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 2403410 - Disclosure - Electric utility segment - Consolidating Statement of Income (Details) link:presentationLink link:calculationLink link:definitionLink 2403413 - Disclosure - Electric utility segment - Consolidating Statements of Changes in Common Stock Equity (Details) link:presentationLink link:calculationLink link:definitionLink 2403404 - Disclosure - Electric utility segment - Cumulative Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2403403 - Disclosure - Electric utility segment - Major Customers (Details) link:presentationLink link:calculationLink link:definitionLink 2403408 - Disclosure - Electric utility segment - Power Purchase Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - Electric utility segment - Regulatory Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2403405 - Disclosure - Electric utility segment - Related-Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Electric utility segment (Tables) link:presentationLink link:calculationLink link:definitionLink 2403406 - Disclosure - Electric utility segment - Unconsolidated Variable Interest Entities (Details) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - Fair value measurements link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - Fair value measurements - Fair Value Hierarchy of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2415404 - Disclosure - Fair value measurements - Fair Value Measurements on a Nonrecurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2415403 - Disclosure - Fair value measurements - Fair Value Measurements on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2415405 - Disclosure - Fair value measurements - Quantitative Information About Level 3 Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 2315301 - Disclosure - Fair value measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - Income taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2411406 - Disclosure - Income taxes - Changes in Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Income taxes - Components of Income Taxes Attributable to Net Income for Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2411404 - Disclosure - Income taxes - Deferred Tax Assets and Liabilities Due to Book/Tax Differences (Details) link:presentationLink link:calculationLink link:definitionLink 2411403 - Disclosure - Income taxes - Income Tax Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Income taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Long-term debt link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Long-term debt (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Long-term debt (Tables) link:presentationLink link:calculationLink link:definitionLink 2117100 - Disclosure - Quarterly information (unaudited) link:presentationLink link:calculationLink link:definitionLink 2417402 - Disclosure - Quarterly information (unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink 2317301 - Disclosure - Quarterly information (unaudited) (Tables) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - Regulatory restrictions on net assets link:presentationLink link:calculationLink link:definitionLink 2413401 - Disclosure - Regulatory restrictions on net assets (Details) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Retirement benefits link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Retirement benefits - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2409405 - Disclosure - Retirement benefits - Assets Held In Retirement Benefit Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 2409403 - Disclosure - Retirement benefits - Changes in Projected Benefit Obligations and Fair Value of Plan Assets and Amounts Recognized in OCI (Details) link:presentationLink link:calculationLink link:definitionLink 2409406 - Disclosure - Retirement benefits - Components of NPBC (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - Retirement benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 2409404 - Disclosure - Retirement benefits - Weighted Average Asset Allocation of Defined Benefit Retirement Plans and Weighted Average Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Revenues link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - Revenues (Tables) link:presentationLink link:calculationLink link:definitionLink 2121100 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT link:presentationLink link:calculationLink link:definitionLink 2421404 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2421401 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - BALANCE SHEETS (Details) link:presentationLink link:calculationLink link:definitionLink 2421403 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - STATEMENTS OF CASH FLOWS (Details) link:presentationLink link:calculationLink link:definitionLink 2421402 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - STATEMENTS OF INCOME AND CHANGES IN SHAREHOLDERS' EQUITY (Details) link:presentationLink link:calculationLink link:definitionLink 2122100 - Schedule - SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS link:presentationLink link:calculationLink link:definitionLink 2422401 - Schedule - SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - Segment financial information link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - Segment financial information (Details) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - Segment financial information (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Share-based compensation link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - Share-based compensation - The 2011 Director Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Share-based compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2410407 - Disclosure - Share-based compensation - Assumptions to Determine the Fair Value of LTIP Awards Linked to TRS (Details) link:presentationLink link:calculationLink link:definitionLink 2410408 - Disclosure - Share-based compensation - LTIP Awards Linked To Other Performance Conditions (Details) link:presentationLink link:calculationLink link:definitionLink 2410406 - Disclosure - Share-based compensation - LTIP Linked to TRS (Details) link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - Share-based compensation - Related Income Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - Share-based compensation - Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Share-based compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Shareholders' equity link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - Shareholders' equity - Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Shareholders' equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2407404 - Disclosure - Shareholders' equity - Reclassification Out Of AOCI (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Shareholders' equity (Tables) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Short-term borrowings link:presentationLink link:calculationLink link:definitionLink 2405401 - Disclosure - Short-term borrowings (Details) link:presentationLink link:calculationLink link:definitionLink 2114100 - Disclosure - Significant group concentrations of credit risk link:presentationLink link:calculationLink link:definitionLink 2414401 - Disclosure - Significant group concentrations of credit risk (Details) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Summary of significant accounting policies link:presentationLink link:calculationLink link:definitionLink 2401406 - Disclosure - Summary of significant accounting policies - Accounts Receivable and Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2401405 - Disclosure - Summary of significant accounting policies - Changes In Accounting Standard Updates (Details) link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - Summary of significant accounting policies - Depreciation (Details) link:presentationLink link:calculationLink link:definitionLink 2401404 - Disclosure - Summary of significant accounting policies - Leases and Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Summary of significant accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2401407 - Disclosure - Summary of significant accounting policies - Summary of Income Tax Expense Related to Investment (Details) link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - Summary of significant accounting policies (Tables) link:presentationLink link:calculationLink link:definitionLink 2116100 - Disclosure - Termination of proposed merger and other matters link:presentationLink link:calculationLink link:definitionLink 2416401 - Disclosure - Termination of proposed merger and other matters (Details) link:presentationLink link:calculationLink link:definitionLink