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Regulatory Matters (Tables) - 2016 Electric Rate Case [Member] | 9 Months Ended
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Sep. 30, 2016
Public Utility, Property, Plant and Equipment [Line Items] |
Schedule of Requested Annual Rate Increase |
﻿ |  |  |  |
﻿ |  |  |  |
﻿In Millions
﻿Components of the rate increase |  |
﻿Investment in rate base |  | $ | 161 |
﻿Operating and maintenance costs |  |  | 21 |
﻿Gross margin |  |  | 17 |
﻿Cost of capital |  |  | 15 |
﻿Working capital |  |  | 11 |
﻿Total |  | $ | 225 |
﻿
Consumers Energy Company [Member] |
Public Utility, Property, Plant and Equipment [Line Items] |
Schedule of Requested Annual Rate Increase |
﻿ |  |  |  |
﻿ |  |  |  |
﻿In Millions
﻿Components of the rate increase |  |
﻿Investment in rate base |  | $ | 161 |
﻿Operating and maintenance costs |  |  | 21 |
﻿Gross margin |  |  | 17 |
﻿Cost of capital |  |  | 15 |
﻿Working capital |  |  | 11 |
﻿Total |  | $ | 225 |
﻿

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