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Gallatin Coal Combustion Residual Facilities Regulatory Accounting Treatment (Policies) | 9 Months Ended
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Jun. 30, 2019
Regulatory Asset Accounting Treatment [Abstract] |
Regulatory Asset Accounting Treatment [Table Text Block] |

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- Definition Regulatory Asset Accounting Treatment [Abstract] + References No definition available. + Details
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- Definition [Table Text Block] for Regulatory Asset Accounting Treatment [Table] + References No definition available. + Details
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