Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

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
	2017			2016			2017			2016
Assets1
Cash equivalents		$	50		$	44		$	-		$	-
Restricted cash equivalents			30			19			30			19
CMS Energy common stock			-			-			20			33
Nonqualified deferred    compensation plan assets			12			12			9			8
DB SERP
Cash equivalents			-			3			-			2
Mutual funds			143			141			102			102
Derivative instruments
Commodity contracts			-			1			-			1
Total		$	235		$	220		$	161		$	165
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	12		$	12		$	9		$	8
Derivative instruments
Commodity contracts			1			-			-			-
Total		$	13		$	12		$	9		$	8

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
	March 31			December 31			March 31			December 31
	2017			2016			2017			2016
Assets1
Cash equivalents		$	50		$	44		$	-		$	-
Restricted cash equivalents			30			19			30			19
CMS Energy common stock			-			-			20			33
Nonqualified deferred    compensation plan assets			12			12			9			8
DB SERP
Cash equivalents			-			3			-			2
Mutual funds			143			141			102			102
Derivative instruments
Commodity contracts			-			1			-			1
Total		$	235		$	220		$	161		$	165
Liabilities1
Nonqualified deferred    compensation plan liabilities		$	12		$	12		$	9		$	8
Derivative instruments
Commodity contracts			1			-			-			-
Total		$	13		$	12		$	9		$	8

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