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Regulatory Matters - Conservation Improvement Program (CIP) (Details) - MPUC [Member] - USD ($) $ in Millions | Jul. 14, 2016 | Jun. 30, 2016
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Regulatory Matters [Line Items] |  |
CIP Spend Requirement |  | 1.50%
Subsequent Event [Member] | CIP Annual Filing [Member] | Minnesota Power [Member] |  |
Regulatory Matters [Line Items] |  |
CIP Financial Incentive | $ 7.5 |

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- Definition Conservation improvement program financial incentive approved by the public utilities commission. + References No definition available. + Details
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Balance Type: | credit
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- Definition Minnesota's Next Generation Act of 2007 introduced a spend goal of 1.5% of net gross operating revenues from service provided in the state on energy CIPs each year. + References No definition available. + Details
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Period Type: | instant

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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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- Details
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- Details
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- Details
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