Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

In Millions
	March 31, 2015															December 31, 2014
				Fair Value															Fair Value
	Carrying						Level									Carrying						Level
	Amount			Total			1			2			3			Amount			Total			1			2			3
CMS Energy, including Consumers
Securities held    to maturity		$	12		$	12		$	-		$	12		$	-		$	11		$	11		$	-		$	11		$	-
Notes    receivable1			967			1,028			-			-			1,028			938			995			-			-			995
Long-term    debt2			8,664			9,562			-			8,508			1,054			8,535			9,285			-			8,252			1,033
Consumers
Long-term    debt3		$	5,267		$	5,823		$	-		$	4,769		$	1,054		$	5,278		$	5,749		$	-		$	4,716		$	1,033

¹ Includes current portion of notes receivable of $151 million at March 31, 2015 and $138 million at December31,2014.

² Includes current portion of long-term debt of $521 million at March 31, 2015 and $519 million at December31,2014.

³ Includes current portion of long-term debt of $113 million at March 31, 2015 and $124 million at December31,2014.

Schedule Of Investment Securities

In Millions
	March 31, 2015												December 31, 2014
				Unrealized			Unrealized			Fair						Unrealized			Unrealized			Fair
	Cost			Gains			Losses			Value			Cost			Gains			Losses			Value
CMS Energy, including Consumers
Available for sale
DB SERP
Mutual funds		$	153		$	-		$	2		$	151		$	129		$	-		$	2		$	127
Held to maturity
Debt securities			12			-			-			12			11			-			-			11
Consumers
Available for sale
DB SERP
Mutual funds		$	109		$	-		$	2		$	107		$	92		$	-		$	2		$	90
CMS Energy    common stock			4			24			-			28			5			33			-			38

Consumers Energy Company [Member]

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

In Millions
	March 31, 2015															December 31, 2014
				Fair Value															Fair Value
	Carrying						Level									Carrying						Level
	Amount			Total			1			2			3			Amount			Total			1			2			3
CMS Energy, including Consumers
Securities held    to maturity		$	12		$	12		$	-		$	12		$	-		$	11		$	11		$	-		$	11		$	-
Notes    receivable1			967			1,028			-			-			1,028			938			995			-			-			995
Long-term    debt2			8,664			9,562			-			8,508			1,054			8,535			9,285			-			8,252			1,033
Consumers
Long-term    debt3		$	5,267		$	5,823		$	-		$	4,769		$	1,054		$	5,278		$	5,749		$	-		$	4,716		$	1,033

¹ Includes current portion of notes receivable of $151 million at March 31, 2015 and $138 million at December31,2014.

² Includes current portion of long-term debt of $521 million at March 31, 2015 and $519 million at December31,2014.

³ Includes current portion of long-term debt of $113 million at March 31, 2015 and $124 million at December31,2014.

Schedule Of Investment Securities

In Millions
	March 31, 2015												December 31, 2014
				Unrealized			Unrealized			Fair						Unrealized			Unrealized			Fair
	Cost			Gains			Losses			Value			Cost			Gains			Losses			Value
CMS Energy, including Consumers
Available for sale
DB SERP
Mutual funds		$	153		$	-		$	2		$	151		$	129		$	-		$	2		$	127
Held to maturity
Debt securities			12			-			-			12			11			-			-			11
Consumers
Available for sale
DB SERP
Mutual funds		$	109		$	-		$	2		$	107		$	92		$	-		$	2		$	90
CMS Energy    common stock			4			24			-			28			5			33			-			38