Regulatory Matters (Tables) (Consumers Energy Company [Member])

12 Months Ended

Dec. 31, 2014

Consumers Energy Company [Member]

Public Utility, Property, Plant and Equipment [Line Items]

Schedule of Regulatory Assets and Liabilities

In Millions
December 31	End of Recovery  or Refund Period	2014			2013
Regulatory assets
Current
Securitized costs – electric utility restructuring legislation1	2015		$	61		$	-
Energy optimization plan incentive2	2015			17			17
Major maintenance1	2015			8			-
Cancelled coal-fueled plant costs1	2015			2			5
Gas revenue decoupling mechanism2	2014			-			17
Other1	2015			1			1
Total current regulatory assets			$	89		$	40
Non-current
Postretirement benefits3	various		$	1,195		$	634
Securitized costs – electric generating units to be retired1	2029			370			362
MGP sites4	various			147			148
ARO4	various			139			129
Unamortized debt costs4	various			66			74
Gas storage inventory adjustments4	various			21			23
Energy optimization plan incentive2	2016			17			18
Securitized costs – electric utility restructuring legislation1	2015			-			129
Major maintenance1	2015			-			10
Other1	various			1			3
Total non-current regulatory assets			$	1,956		$	1,530
Total regulatory assets			$	2,045		$	1,570
Regulatory liabilities
Current
Income taxes, net	2015		$	64		$	64
Renewable energy grant	2015			2			2
Other	2015			1			1
Total current regulatory liabilities			$	67		$	67
Non-current
Cost of removal	various		$	1,673		$	1,599
Renewable energy plan	2028			131			159
Income taxes, net	various			103			157
ARO	various			83			93
Renewable energy grant	2043			63			65
Energy optimization plan	various			32			31
Postretirement benefits	various			-			98
Other	various			10			13
Total non-current regulatory liabilities			$	2,095		$	2,215
Total regulatory liabilities			$	2,162		$	2,282

¹ These regulatory assets either are included in rate base (or are expected to be included, for costs incurred subsequent to the most recently approved rate case), thereby providing a return on expenditures, or provide a specific return on investment authorized by the MPSC.

² These regulatory assets have arisen from alternative revenue programs and are not associated with incurred costs or capital investments.  Therefore, the MPSC has provided for recovery without a return.

³ This regulatory asset is offset partially by liabilities.  The net amount is included in rate base, thereby providing a return.

⁴ These regulatory assets represent incurred costs for which the MPSC has provided, or Consumers expects, recovery without a return on investment.

Schedule of Assets and Liabilities for PSCR and GCR Underrecoveries and Overrecoveries

In Millions
December 31	2014			2013
Accrued gas revenue		$	27		$	-
Accrued rate refunds			6			12