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Electric utility subsidiary - Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Revenue taxes |  |  |  |
Electric Utility Revenue Taxes Included in Operating Revenues and in Taxes Other than Income Taxes Expense | $ 50 | $ 64 | $ 101 | $ 129

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- Definition Represents the utility revenue taxes included in operating revenues and in taxes, other than income taxes expense. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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