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Consolidated Statements of Comprehensive Income (Parenthetical) - HECO - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Foreign currency hedge net unrealized loss, (taxes) benefits | $ 0 | $ 0 | $ 179
Reclassification adjustment to net income, tax (benefits) |  | (289) | 76
Net gains (losses) arising during the period, (taxes) benefits | (9,810) | 41,129 | (27,703)
Amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, tax benefits | 7,317 | 10,041 | 9,267
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, (taxes) benefits | (2,887) | 49,523 | (18,206)
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |
Foreign currency hedge net unrealized loss, (taxes) benefits | 0 | 0 | 179
Reclassification adjustment to net income, tax (benefits) | 0 | (289) | 110
Net gains (losses) arising during the period, (taxes) benefits | (9,024) | 39,587 | (27,153)
Amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, tax benefits | 6,594 | 9,221 | 8,442
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, (taxes) benefits | $ (2,887) | $ 49,523 | $ (18,206)

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- Definition The amount of income taxes on the reclassification adjustments on pension and post retirement benefits for the accounting impact of the decisions issued by the Public Utilities Commission. + References No definition available. + Details
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- Definition Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580 + Details
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- Definition Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580 + Details
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- Definition Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580 + Details
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