Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
December 31	2014			2013			2014			2013
Assets1
Cash equivalents		$	110		$	87		$	19		$	-
Restricted cash equivalents			38			16			38			15
CMS Energy common stock			-			-			38			29
Nonqualified deferred    compensation plan assets			8			6			6			4
DB SERP
Cash equivalents			4			-			3			-
Mutual funds			127			136			90			95
Derivative instruments
Commodity contracts			2			5			2			4
Total		$	289		$	250		$	196		$	147
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	8		$	6		$	6		$	4
Derivative instruments
Commodity contracts			1			1			1			-
Total		$	9		$	7		$	7		$	4

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 December 31, 2014 and 2013.

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

In Millions
Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Balance at beginning of period		$	4		$	2		$	(2)
Total gains included in earnings1			-			-			3
Total gains (losses) offset through regulatory accounting			(15)			3			6
Purchases			(1)			-			1
Settlements			13			(1)			(6)
Balance at end of period		$	1		$	4		$	2
Unrealized gains (losses) included in earnings relating to assets and liabilities
still held at end of period1		$	-		$	(1)		$	2
Consumers
Balance at beginning of period		$	4		$	2		$	2
Total gains (losses) offset through regulatory accounting			(15)			3			6
Purchases			(1)			-			1
Settlements			13			(1)			(7)
Balance at end of period		$	1		$	4		$	2

¹ CMS Energy records realized and unrealized gains and losses for Level 3 recurring fair value measurements in earnings as a component of operating revenue or maintenance and other operating expenses on its consolidated statements of income.

Consumers Energy Company [Member]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
December 31	2014			2013			2014			2013
Assets1
Cash equivalents		$	110		$	87		$	19		$	-
Restricted cash equivalents			38			16			38			15
CMS Energy common stock			-			-			38			29
Nonqualified deferred    compensation plan assets			8			6			6			4
DB SERP
Cash equivalents			4			-			3			-
Mutual funds			127			136			90			95
Derivative instruments
Commodity contracts			2			5			2			4
Total		$	289		$	250		$	196		$	147
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	8		$	6		$	6		$	4
Derivative instruments
Commodity contracts			1			1			1			-
Total		$	9		$	7		$	7		$	4

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 December 31, 2014 and 2013.

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

In Millions
Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Balance at beginning of period		$	4		$	2		$	(2)
Total gains included in earnings1			-			-			3
Total gains (losses) offset through regulatory accounting			(15)			3			6
Purchases			(1)			-			1
Settlements			13			(1)			(6)
Balance at end of period		$	1		$	4		$	2
Unrealized gains (losses) included in earnings relating to assets and liabilities
still held at end of period1		$	-		$	(1)		$	2
Consumers
Balance at beginning of period		$	4		$	2		$	2
Total gains (losses) offset through regulatory accounting			(15)			3			6
Purchases			(1)			-			1
Settlements			13			(1)			(7)
Balance at end of period		$	1		$	4		$	2

¹ CMS Energy records realized and unrealized gains and losses for Level 3 recurring fair value measurements in earnings as a component of operating revenue or maintenance and other operating expenses on its consolidated statements of income.