2106100 - Disclosure - Bank segment (HEI only) link:presentationLink link:calculationLink link:definitionLink 2406426 - Disclosure - Bank segment (HEI only) - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2406410 - Disclosure - Bank segment (HEI only) - Allowance For Loan Losses (Details) link:presentationLink link:calculationLink link:definitionLink 2406406 - Disclosure - Bank segment (HEI only) - Available For Sale Investment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2406405 - Disclosure - Bank segment (HEI only) - Balance Sheets Data (Details) link:presentationLink link:calculationLink link:definitionLink 2406415 - Disclosure - Bank segment (HEI only) - Carrying Amount of Impaired Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2406411 - Disclosure - Bank segment (HEI only) - Changes in the Allowance for Loan Losses (Details) link:presentationLink link:calculationLink link:definitionLink 2406414 - Disclosure - Bank segment (HEI only) - Credit Risk Profile Based on Aging Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2406413 - Disclosure - Bank segment (HEI only) - Credit Risk Profile Based on Payment Activity for Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2406412 - Disclosure - Bank segment (HEI only) - Credit Risk Profile by Internally Assigned Grade for Loans (Details) link:presentationLink link:calculationLink link:definitionLink 2406422 - Disclosure - Bank segment (HEI only) - Deposit Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2406427 - Disclosure - Bank segment (HEI only) - Derivative Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2406425 - Disclosure - Bank segment (HEI only) - FHLB Advances (Details) link:presentationLink link:calculationLink link:definitionLink 2406407 - Disclosure - Bank segment (HEI only) - Investment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2406421 - 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 2406417 - Disclosure - Bank segment (HEI only) - Loan Modifications (Details) link:presentationLink link:calculationLink link:definitionLink 2406408 - Disclosure - Bank segment (HEI only) - Loans Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 2406409 - Disclosure - Bank segment (HEI only) - Loans Receivable, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2406420 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights and Valuation Allowance Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 2406419 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights (Details) link:presentationLink link:calculationLink link:definitionLink 2406418 - Disclosure - Bank segment (HEI only) - Mortgage Servicing Rights, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2406428 - Disclosure - Bank segment (HEI only) - Off Balance Sheet Arrangements and Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2406424 - Disclosure - Bank segment (HEI only) - Securities Sold Under Agreements to Repurchase (Details) link:presentationLink link:calculationLink link:definitionLink 2406423 - 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 2406404 - Disclosure - Bank segment (HEI only) - Statements of Comprehensive Income - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - Bank segment (HEI only) - Statements of Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Bank segment (HEI only) - Statements of Income Data (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Bank segment (HEI only) (Tables) link:presentationLink link:calculationLink link:definitionLink 2406416 - Disclosure - Bank segment (HEI only) - TDR Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - Cash flows link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - Cash flows (Details) link:presentationLink link:calculationLink link:definitionLink 2315301 - 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 2105100 - Disclosure - Electric utility segment link:presentationLink link:calculationLink link:definitionLink 2405407 - Disclosure - Electric utility segment - 2014 Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 2405406 - Disclosure - Electric utility segment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2405410 - Disclosure - Electric utility segment - Consolidating Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 2405412 - Disclosure - Electric utility segment - Consolidating Statement of Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 2405409 - Disclosure - Electric utility segment - Consolidating Statement of Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 2405408 - Disclosure - Electric utility segment - Consolidating Statement of Income (Details) link:presentationLink link:calculationLink link:definitionLink 2405411 - Disclosure - Electric utility segment - Consolidating Statements of Changes in Common Stock Equity (Details) link:presentationLink link:calculationLink link:definitionLink 2405404 - Disclosure - Electric utility segment - Cumulative Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - Electric utility segment - Major Customers (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Electric utility segment - Regulatory Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2405405 - Disclosure - Electric utility segment - Related-Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Electric utility segment (Tables) link:presentationLink link:calculationLink link:definitionLink 2118100 - Disclosure - Fair value measurements link:presentationLink link:calculationLink link:definitionLink 2418402 - Disclosure - Fair value measurements - Fair Value Hierarchy of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2418404 - Disclosure - Fair value measurements - Fair Value Measurements on a Nonrecurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2418403 - Disclosure - Fair value measurements - Fair Value Measurements on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2418405 - Disclosure - Fair value measurements - Quantitative Information About Level 3 Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 2318301 - Disclosure - Fair value measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2114100 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 2414402 - Disclosure - Income taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2414406 - Disclosure - Income taxes - Changes in Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2414403 - Disclosure - Income taxes - Components of Income Taxes Attributable to Net Income for Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2414405 - Disclosure - Income taxes - Deferred Tax Assets and Liabilities Due to Book/Tax Differences (Details) link:presentationLink link:calculationLink link:definitionLink 2414404 - Disclosure - Income taxes - Income Tax Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 2314301 - Disclosure - Income taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Long-term debt link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Long-term debt (Details) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Long-term debt (Tables) link:presentationLink link:calculationLink link:definitionLink 2119100 - Disclosure - Other related-party transactions link:presentationLink link:calculationLink link:definitionLink 2419402 - Disclosure - Other related-party transactions (Details) link:presentationLink link:calculationLink link:definitionLink 2319301 - Disclosure - Other related-party transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 2120100 - Disclosure - Quarterly information (unaudited) link:presentationLink link:calculationLink link:definitionLink 2420402 - Disclosure - Quarterly information (unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink 2320301 - Disclosure - Quarterly information (unaudited) (Tables) link:presentationLink link:calculationLink link:definitionLink 2116100 - Disclosure - Regulatory restrictions on net assets link:presentationLink link:calculationLink link:definitionLink 2416401 - Disclosure - Regulatory restrictions on net assets (Details) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Retirement benefits link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - Retirement benefits - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2412403 - 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 2412406 - Disclosure - Retirement benefits - Components of NPBC (Details) link:presentationLink link:calculationLink link:definitionLink 2412405 - Disclosure - Retirement benefits Retirement benefits - Assets Held In Retirement Benefit Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 2312301 - Disclosure - Retirement benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 2412404 - Disclosure - Retirement benefits - Weighted Average Asset Allocation of Defined Benefit Retirement Plans and Weighted Average Assumptions(Details) link:presentationLink link:calculationLink link:definitionLink 2121100 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT 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- STATEMENT OF CASH FLOWS (Details) link:presentationLink link:calculationLink link:definitionLink 2421402 - Schedule - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT- STATEMENT 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 2104100 - Disclosure - Segment financial information link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Segment financial information (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Segment financial information (Tables) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - Share-based compensation link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - Share-based compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2413409 - Disclosure - Share-based compensation - Assumptions to Determine the Fair Value of LTIP Awards Linked to TRS (Details) link:presentationLink link:calculationLink link:definitionLink 2413410 - Disclosure - Share-based compensation - LTIP Awards Linked To Other Performance Conditions (Details) link:presentationLink link:calculationLink link:definitionLink 2413408 - Disclosure - Share-based compensation - LTIP Linked to TRS (Details) link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - Share-based compensation - Related Income Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2413406 - Disclosure - Share-based compensation - Restricted Shares and Restricted Stock Awards (Details) link:presentationLink link:calculationLink link:definitionLink 2413407 - Disclosure - Share-based compensation - Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - Share-based compensation Share-based compensation - The 2011 Director Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - Share-based compensation - Stock Appreciation Rights (Details) link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - Share-based compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Shareholders' equity link:presentationLink link:calculationLink link:definitionLink 2411403 - Disclosure - Shareholders' equity - Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Shareholders' equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2411404 - Disclosure - Shareholders' equity - Reclassification Out Of AOCI (Details) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Shareholders' equity (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Short-term borrowings link:presentationLink link:calculationLink link:definitionLink 2409401 - Disclosure - Short-term borrowings (Details) link:presentationLink link:calculationLink link:definitionLink 2117100 - Disclosure - Significant group concentrations of credit risk link:presentationLink link:calculationLink link:definitionLink 2417401 - 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 2401403 - Disclosure - Summary of significant accounting policies (Details) link:presentationLink link:calculationLink link:definitionLink 2401404 - Disclosure - Summary of significant accounting policies (Details 2) link:presentationLink link:calculationLink link:definitionLink 2401405 - Disclosure - Summary of significant accounting policies (Details 3) link:presentationLink link:calculationLink link:definitionLink 2401406 - Disclosure - Summary of significant accounting policies (Details 4) link:presentationLink link:calculationLink link:definitionLink 2401407 - Disclosure - Summary of significant accounting policies (Details 5) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Summary of significant accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - Summary of significant accounting policies (Tables) link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - Termination of proposed merger and other matters link:presentationLink link:calculationLink link:definitionLink 2403401 - Disclosure - Termination of proposed merger and other matters (Details) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Unconsolidated variable interest entities link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - Unconsolidated variable interest entities (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - Unconsolidated variable interest entities (Tables) link:presentationLink link:calculationLink link:definitionLink