Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	September 30			December 31			September 30			December 31
	2015			2014			2015			2014
Assets1
Cash equivalents		$	52		$	110		$	-		$	19
Restricted cash equivalents			52			38			52			38
CMS Energy common stock			-			-			28			38
Nonqualified deferred    compensation plan assets			9			8			6			6
DB SERP
Cash equivalents			1			4			1			3
Mutual funds			147			127			105			90
Derivative instruments
Commodity contracts			3			2			2			2
Total		$	264		$	289		$	194		$	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 September 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						Nine Months Ended
September 30	2015			2014			2015			2014
CMS Energy, including Consumers
Balance at beginning of period		$	3		$	1		$	1		$	4
Total gains (losses) offset through regulatory accounting			-			2			3			(16)
Purchases			-			-			-			(1)
Settlements			(1)			(2)			(2)			14
Balance at end of period		$	2		$	1		$	2		$	1
Unrealized losses included in earnings relating to assets and liabilities still held at end of period1		$	(1)		$	-		$	-		$	-
Consumers
Balance at beginning of period		$	3		$	1		$	1		$	4
Total gains (losses) offset through regulatory accounting			-			2			3			(16)
Purchases			-			-			-			(1)
Settlements			(1)			(2)			(2)			14
Balance at end of period		$	2		$	1		$	2		$	1

Consumers Energy Company [Member]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	September 30			December 31			September 30			December 31
	2015			2014			2015			2014
Assets1
Cash equivalents		$	52		$	110		$	-		$	19
Restricted cash equivalents			52			38			52			38
CMS Energy common stock			-			-			28			38
Nonqualified deferred    compensation plan assets			9			8			6			6
DB SERP
Cash equivalents			1			4			1			3
Mutual funds			147			127			105			90
Derivative instruments
Commodity contracts			3			2			2			2
Total		$	264		$	289		$	194		$	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 September 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						Nine Months Ended
September 30	2015			2014			2015			2014
CMS Energy, including Consumers
Balance at beginning of period		$	3		$	1		$	1		$	4
Total gains (losses) offset through regulatory accounting			-			2			3			(16)
Purchases			-			-			-			(1)
Settlements			(1)			(2)			(2)			14
Balance at end of period		$	2		$	1		$	2		$	1
Unrealized losses included in earnings relating to assets and liabilities still held at end of period1		$	(1)		$	-		$	-		$	-
Consumers
Balance at beginning of period		$	3		$	1		$	1		$	4
Total gains (losses) offset through regulatory accounting			-			2			3			(16)
Purchases			-			-			-			(1)
Settlements			(1)			(2)			(2)			14
Balance at end of period		$	2		$	1		$	2		$	1