Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

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
	2016			2015			2016			2015
Assets1
Cash equivalents		$	136		$	158		$	-		$	-
Restricted cash equivalents			18			19			18			19
CMS Energy common stock			-			-			37			29
Nonqualified deferred    compensation plan assets			11			10			7			7
DB SERP
Cash equivalents			3			2			2			2
Mutual funds			143			146			102			104
Derivative instruments
Commodity contracts			3			1			3			1
Total		$	314		$	336		$	169		$	162
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	11		$	10		$	7		$	7
Derivative instruments
Commodity contracts			1			-			1			-
Total		$	12		$	10		$	8		$	7

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

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
	2016			2015			2016			2015
Assets1
Cash equivalents		$	136		$	158		$	-		$	-
Restricted cash equivalents			18			19			18			19
CMS Energy common stock			-			-			37			29
Nonqualified deferred    compensation plan assets			11			10			7			7
DB SERP
Cash equivalents			3			2			2			2
Mutual funds			143			146			102			104
Derivative instruments
Commodity contracts			3			1			3			1
Total		$	314		$	336		$	169		$	162
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	11		$	10		$	7		$	7
Derivative instruments
Commodity contracts			1			-			1			-
Total		$	12		$	10		$	8		$	7

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