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Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Cost/Carrying Amounts and Fair Values of Long-Term Financial Instruments


In Millions
	June 30, 2011				December 31, 2010
	Cost or				Cost or
	Carrying				Carrying
	Amount		Fair Value		Amount		Fair Value

CMS Energy, including Consumers
Securities held to maturity	$	7	$	7	$	5	$	6
Securities available for sale		115		116		90		90
Notes receivable¹		398		417		386		407
Long-term debt²		7,283		8,074		7,174		7,861

Consumers
Securities available for sale	$	82	$	107	$	64	$	90
Long-term debt³		4,507		4,892		4,525		4,891


¹		Includes current portion of notes receivable of $13 million at June 30, 2011 and $11 million at December 31, 2010.

²		Includes current portion of long-term debt of $1,099 million at June 30, 2011 and $726 million at December 31, 2010.

³		Includes current portion of long-term debt of $338 million at June 30, 2011 and $37 million at December 31, 2010.

Schedule of Investment Securities


In Millions
	June 30, 2011								December 31, 2010
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value

CMS Energy, including consumers
Available for sale
SERP
Mutual fund	$	89	$	1	$	—	$	90	$	62	$	—	$	—	$	62
State and municipal bonds		26		—		—		26		28		—		—		28
Held to maturity
Debt securities		7		—		—		7		5		1		—		6

Consumers
Available for sale
SERP
Mutual fund	$	58	$	1	$	—	$	59	$	39	$	—	$	—	$	39
State and municipal bonds		17		—		—		17		17		—		—		17
CMS Energy common stock		7		24		—		31		8		26		—		34

Schedule of Proceeds and Gross Realized Gains/Losses from Sales of Available-for-Sale Securities


In Millions
	Three months ended				Six months ended
June 30	2011		2010		2011		2010

CMS Energy, including Consumers
Proceeds from sales of investment securities¹	$	1	$	—	$	1	$	1

Consumers
Proceeds from sales of investment securities¹	$	—	$	—	$	1	$	—


¹		All of the proceeds related to sales of state and municipal bonds that were held within the SERP and classified as available for sale. Realized losses on these sales were insignificant for both CMS Energy and Consumers during each period.

Schedule of Contractual Maturities of Investments


In Millions
	CMS Energy,
	including Consumers		Consumers

Due one year or less	$	1	$	1
Due after one year through five years		10		7
Due after five years through ten years		12		7
Due after ten years		3		2

Total	$	26	$	17

Consumers Energy Company [Member]

Schedule of Cost/Carrying Amounts and Fair Values of Long-Term Financial Instruments


In Millions
	June 30, 2011				December 31, 2010
	Cost or				Cost or
	Carrying				Carrying
	Amount		Fair Value		Amount		Fair Value

CMS Energy, including Consumers
Securities held to maturity	$	7	$	7	$	5	$	6
Securities available for sale		115		116		90		90
Notes receivable¹		398		417		386		407
Long-term debt²		7,283		8,074		7,174		7,861

Consumers
Securities available for sale	$	82	$	107	$	64	$	90
Long-term debt³		4,507		4,892		4,525		4,891


¹		Includes current portion of notes receivable of $13 million at June 30, 2011 and $11 million at December 31, 2010.

²		Includes current portion of long-term debt of $1,099 million at June 30, 2011 and $726 million at December 31, 2010.

³		Includes current portion of long-term debt of $338 million at June 30, 2011 and $37 million at December 31, 2010.

Schedule of Investment Securities


In Millions
	June 30, 2011								December 31, 2010
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value

CMS Energy, including consumers
Available for sale
SERP
Mutual fund	$	89	$	1	$	—	$	90	$	62	$	—	$	—	$	62
State and municipal bonds		26		—		—		26		28		—		—		28
Held to maturity
Debt securities		7		—		—		7		5		1		—		6

Consumers
Available for sale
SERP
Mutual fund	$	58	$	1	$	—	$	59	$	39	$	—	$	—	$	39
State and municipal bonds		17		—		—		17		17		—		—		17
CMS Energy common stock		7		24		—		31		8		26		—		34

Schedule of Proceeds and Gross Realized Gains/Losses from Sales of Available-for-Sale Securities


In Millions
	Three months ended				Six months ended
June 30	2011		2010		2011		2010

CMS Energy, including Consumers
Proceeds from sales of investment securities¹	$	1	$	—	$	1	$	1

Consumers
Proceeds from sales of investment securities¹	$	—	$	—	$	1	$	—


¹		All of the proceeds related to sales of state and municipal bonds that were held within the SERP and classified as available for sale. Realized losses on these sales were insignificant for both CMS Energy and Consumers during each period.

Schedule of Contractual Maturities of Investments


In Millions
	CMS Energy,
	including Consumers		Consumers

Due one year or less	$	1	$	1
Due after one year through five years		10		7
Due after five years through ten years		12		7
Due after ten years		3		2

Total	$	26	$	17

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Publisher FASB
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-Number 107
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Tabular disclosure of investments in certain debt and equity securities (and certain other trading assets) which include all debt and equity securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. Other trading assets include assets that are carried on the balance sheet at fair value and held for trading purposes. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities (and other trading assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Topic 320

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-Name Statement of Financial Accounting Standard (FAS)
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+ Details