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Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Net Benefit Costs

In Millions
		Pension
Three Months Ended March 31		2012				2011
CMS ENERGY, INCLUDING CONSUMERS
Net periodic pension cost
Service cost		$	12			$	12
Interest expense			25				25
Expected return on plan assets			(31	)			(28	)
Amortization of:
Net loss			19				16
Prior service cost			1				1
Net periodic pension cost		$	26			$	26
CONSUMERS
Net periodic pension cost
Service cost		$	12			$	12
Interest expense			24				24
Expected return on plan assets			(30	)			(27	)
Amortization of:
Net loss			18				15
Prior service cost			1				1
Net periodic pension cost		$	25			$	25

		In Millions
		OPEB
Three Months Ended March 31		2012				2011
CMS ENERGY, INCLUDING CONSUMERS
Net periodic OPEB cost
Service cost		$	8			$	7
Interest expense			21				19
Expected return on plan assets			(17	)			(17	)
Amortization of:
Net loss			11				8
Prior service credit			(5	)			(5	)
Net periodic OPEB cost		$	18			$	12
CONSUMERS
Net periodic OPEB cost
Service cost		$	8			$	6
Interest expense			20				18
Expected return on plan assets			(15	)			(15	)
Amortization of:
Net loss			11				8
Prior service credit			(5	)			(5	)
Net periodic OPEB cost		$	19			$	12

Consumers Energy Company [Member]

Schedule of Net Benefit Costs

		In Millions
		Pension
Three Months Ended March 31		2012				2011
CMS ENERGY, INCLUDING CONSUMERS
Net periodic pension cost
Service cost		$	12			$	12
Interest expense			25				25
Expected return on plan assets			(31	)			(28	)
Amortization of:
Net loss			19				16
Prior service cost			1				1
Net periodic pension cost		$	26			$	26
CONSUMERS
Net periodic pension cost
Service cost		$	12			$	12
Interest expense			24				24
Expected return on plan assets			(30	)			(27	)
Amortization of:
Net loss			18				15
Prior service cost			1				1
Net periodic pension cost		$	25			$	25

		In Millions
		OPEB
Three Months Ended March 31		2012				2011
CMS ENERGY, INCLUDING CONSUMERS
Net periodic OPEB cost
Service cost		$	8			$	7
Interest expense			21				19
Expected return on plan assets			(17	)			(17	)
Amortization of:
Net loss			11				8
Prior service credit			(5	)			(5	)
Net periodic OPEB cost		$	18			$	12
CONSUMERS
Net periodic OPEB cost
Service cost		$	8			$	6
Interest expense			20				18
Expected return on plan assets			(15	)			(15	)
Amortization of:
Net loss			11				8
Prior service credit			(5	)			(5	)
Net periodic OPEB cost		$	19			$	12

X

- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 715

-SubTopic 20

-Publisher FASB

-Number

-Article

-Subparagraph (h)

-Name Accounting Standards Codification

-Paragraph 1

-Section 50

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

+ Details

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