Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	March 31			December 31			March 31			December 31
	2014			2013			2014			2013
Assets1
Cash equivalents		$	548		$	87		$	80		$	-
Restricted cash equivalents			15			16			15			15
CMS Energy common stock			-			-			32			29
Nonqualified deferred    compensation plan assets			7			6			5			4
DB SERP
Cash equivalents			2			-			1			-
Mutual funds			133			136			94			95
Derivative instruments
Commodity contracts			2			5			-			4
Total		$	707		$	250		$	227		$	147
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	7		$	6		$	5		$	4
Derivative instruments
Commodity contracts			-			1			-			-
Total		$	7		$	7		$	5		$	4

1All assets and liabilities were classified as Level 1 with the exception of commodity contracts, which were classified as Level 2 or Level 3, and which were insignificant.

Consumers Energy Company [Member]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

In Millions
	CMS Energy, including Consumers						Consumers
	March 31			December 31			March 31			December 31
	2014			2013			2014			2013
Assets1
Cash equivalents		$	548		$	87		$	80		$	-
Restricted cash equivalents			15			16			15			15
CMS Energy common stock			-			-			32			29
Nonqualified deferred    compensation plan assets			7			6			5			4
DB SERP
Cash equivalents			2			-			1			-
Mutual funds			133			136			94			95
Derivative instruments
Commodity contracts			2			5			-			4
Total		$	707		$	250		$	227		$	147
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	7		$	6		$	5		$	4
Derivative instruments
Commodity contracts			-			1			-			-
Total		$	7		$	7		$	5		$	4

1All assets and liabilities were classified as Level 1 with the exception of commodity contracts, which were classified as Level 2 or Level 3, and which were insignificant.