Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	June 30			December 31			June 30			December 31
	2015			2014			2015			2014
Assets1
Cash equivalents		$	291		$	110		$	251		$	19
Restricted cash equivalents			40			38			40			38
CMS Energy common stock			-			-			26			38
Nonqualified deferred    compensation plan assets			9			8			6			6
DB SERP
Cash equivalents			2			4			2			3
Mutual funds			150			127			107			90
Derivative instruments
Commodity contracts			4			2			4			2
Total		$	496		$	289		$	436		$	196
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	9		$	8		$	6		$	6
Derivative instruments
Commodity contracts			1			1			1			1
Total		$	10		$	9		$	7		$	7

¹ All assets and liabilities were classified as Level 1 with the exception of some commodity contracts, which were classified as Level 2 or Level 3 and which were insignificant at June 30, 2015 and December 31, 2014.

Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Significant Level 3 Inputs

In Millions
	Three Months Ended						Six Months Ended
June 30	2015			2014			2015			2014
CMS Energy, including Consumers
Balance at beginning of period		$	1		$	-		$	1		$	4
Total gains (losses) offset through regulatory accounting			2			1			3			(18)
Purchases			-			-			-			(1)
Settlements			-			-			(1)			16
Balance at end of period		$	3		$	1		$	3		$	1
Consumers
Balance at beginning of period		$	1		$	-		$	1		$	4
Total gains (losses) offset through regulatory accounting			2			1			3			(18)
Purchases			-			-			-			(1)
Settlements			-			-			(1)			16
Balance at end of period		$	3		$	1		$	3		$	1

Consumers Energy Company [Member]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	June 30			December 31			June 30			December 31
	2015			2014			2015			2014
Assets1
Cash equivalents		$	291		$	110		$	251		$	19
Restricted cash equivalents			40			38			40			38
CMS Energy common stock			-			-			26			38
Nonqualified deferred    compensation plan assets			9			8			6			6
DB SERP
Cash equivalents			2			4			2			3
Mutual funds			150			127			107			90
Derivative instruments
Commodity contracts			4			2			4			2
Total		$	496		$	289		$	436		$	196
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	9		$	8		$	6		$	6
Derivative instruments
Commodity contracts			1			1			1			1
Total		$	10		$	9		$	7		$	7

¹ All assets and liabilities were classified as Level 1 with the exception of some commodity contracts, which were classified as Level 2 or Level 3 and which were insignificant at June 30, 2015 and December 31, 2014.

Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Significant Level 3 Inputs

In Millions
	Three Months Ended						Six Months Ended
June 30	2015			2014			2015			2014
CMS Energy, including Consumers
Balance at beginning of period		$	1		$	-		$	1		$	4
Total gains (losses) offset through regulatory accounting			2			1			3			(18)
Purchases			-			-			-			(1)
Settlements			-			-			(1)			16
Balance at end of period		$	3		$	1		$	3		$	1
Consumers
Balance at beginning of period		$	1		$	-		$	1		$	4
Total gains (losses) offset through regulatory accounting			2			1			3			(18)
Purchases			-			-			-			(1)
Settlements			-			-			(1)			16
Balance at end of period		$	3		$	1		$	3		$	1