Regulatory Matters (Tables) - 2016 Electric Rate Case [Member]
|
9 Months Ended |
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
|
|
|