2104100 - Disclosure - Bank segment link:presentationLink link:calculationLink link:definitionLink 2404410 - Disclosure - Bank segment - Allowance for loan losses (Details) link:presentationLink link:calculationLink link:definitionLink 2404408 - Disclosure - Bank segment - Available-for-sale securities, narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2404405 - Disclosure - Bank segment - Balance sheet data (Details) link:presentationLink link:calculationLink link:definitionLink 2404406 - Disclosure - Bank segment - Components of investment securities (Details) link:presentationLink link:calculationLink link:definitionLink 2404404 - Disclosure - Bank segment - Comprehensive income data (Details) link:presentationLink link:calculationLink link:definitionLink 2404421 - Disclosure - Bank segment - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 2404407 - Disclosure - Bank segment - Contractual maturities of securities (Details) link:presentationLink link:calculationLink link:definitionLink 2404411 - Disclosure - Bank segment - Credit risk profile - assigned grades (Details) link:presentationLink link:calculationLink link:definitionLink 2404412 - Disclosure - Bank segment - Credit risk profile - payment activity (Details) link:presentationLink link:calculationLink link:definitionLink 2404413 - Disclosure - Bank segment - Credit risk profile - summary (Details) link:presentationLink link:calculationLink link:definitionLink 2404420 - Disclosure - Bank segment - Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Bank segment - Income statement data (Details) link:presentationLink link:calculationLink link:definitionLink 2404416 - Disclosure - Bank segment - Loan modifications (Details) link:presentationLink link:calculationLink link:definitionLink 2404409 - Disclosure - Bank segment - Loans receivable (Details) link:presentationLink link:calculationLink link:definitionLink 2404418 - Disclosure - Bank segment - Mortgage servicing rights (Details) link:presentationLink link:calculationLink link:definitionLink 2404418 - Disclosure - Bank segment - Mortgage servicing rights (Details) link:presentationLink link:calculationLink link:definitionLink 2404414 - Disclosure - Bank segment - Principal balance of impaired loans (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Bank segment - Reconciliation of Income (Details) link:presentationLink link:calculationLink link:definitionLink 2404419 - Disclosure - Bank segment - Repurchase Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Bank segment (Tables) link:presentationLink link:calculationLink link:definitionLink 2404415 - Disclosure - Bank segment - Troubled debt restructuring - narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2404417 - Disclosure - Bank segment - Troubled debt restructuring that subsequently defaulted (Details) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Basis of presentation link:presentationLink link:calculationLink link:definitionLink 2401402 - Disclosure - Basis of presentation (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Basis of presentation (Policies) 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 - Condensed Consolidated Balance Sheets (unaudited) link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Condensed Consolidated Balance Sheets (unaudited) link:presentationLink link:calculationLink link:definitionLink 1003501 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Condensed Consolidated Statements of Changes in Shareholders' Equity and Common Stock Equity (unaudited) link:presentationLink link:calculationLink link:definitionLink 1004501 - Statement - Condensed Consolidated Statements of Changes in Shareholders' Equity and Common Stock Equity (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) link:presentationLink link:calculationLink link:definitionLink 1002501 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Condensed Consolidated Statements of Income (unaudited) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Condensed Consolidated Statements of Income (unaudited) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Credit agreements and long-term debt link:presentationLink link:calculationLink link:definitionLink 2405401 - Disclosure - Credit agreements and long-term debt (Details) 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 - Annual decoupling filings summary (Details) link:presentationLink link:calculationLink link:definitionLink 2403404 - Disclosure - Electric utility segment - Commitments and contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 2403411 - Disclosure - Electric utility segment - Condensed consolidating balance sheet (Details) link:presentationLink link:calculationLink link:definitionLink 2403413 - Disclosure - Electric utility segment - Condensed consolidating statement of cash flows (Details) link:presentationLink link:calculationLink link:definitionLink 2403412 - Disclosure - Electric utility segment - Condensed consolidating statement of changes in common stock equity (Details) link:presentationLink link:calculationLink link:definitionLink 2403410 - Disclosure - Electric utility segment - Condensed consolidating statement of comprehensive income (loss) (Details) link:presentationLink link:calculationLink link:definitionLink 2403409 - Disclosure - Electric utility segment - Condensed consolidating statement of income (Details) link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - Electric utility segment - HECO Capital Trust III (Details) link:presentationLink link:calculationLink link:definitionLink 2403405 - Disclosure - Electric utility segment - Power purchase agreements (Details) link:presentationLink link:calculationLink link:definitionLink 2403408 - Disclosure - Electric utility segment - Rate proceedings (Details) link:presentationLink link:calculationLink link:definitionLink 2403406 - Disclosure - Electric utility segment - Regulatory Proceedings (Details) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Electric utility segment (Tables) link:presentationLink link:calculationLink link:definitionLink 2403403 - Disclosure - Electric utility segment - Unconsolidated variable interest entities (Details) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - Fair value measurements link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - Fair value measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - Fair value measurements - Assets and liabilities measured on a recurring basis (Details) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - Fair value measurements - Assets Measured on a Nonrecurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - Fair value measurements - Summary of financial assets and liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2413406 - Disclosure - Fair value measurements - Summary of Level 3 financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - Fair value measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 2411401 - Disclosure - Income taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Retirement benefits link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Retirement benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - Retirement benefits (Tables) 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 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 - 2011 Director Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2410406 - Disclosure - Share-based compensation - Fair value assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Share-based compensation - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - Share-based compensation - Summary of changes in share based compensation (Details) link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - Share-based compensation - Summary of income taxes (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 2407402 - Disclosure - Shareholders' equity - Accumulated other comprehensive income (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - 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