Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
December 31	2020			2019			2020			2019
Assets1
Restricted cash equivalents		$	17		$	17		$	15		$	17
CMS Energy common stock		—			—			—			1
Nonqualified deferred compensation plan assets		23			18			18			14
Derivative instruments		1			1			1			1
Total assets		$	41		$	36		$	34		$	33
Liabilities1
Nonqualified deferred compensation plan liabilities		$	23		$	18		$	18		$	14
Derivative instruments		17			8			—			—
Total liabilities		$	40		$	26		$	18		$	14

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

Consumers Energy Company

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
December 31	2020			2019			2020			2019
Assets1
Restricted cash equivalents		$	17		$	17		$	15		$	17
CMS Energy common stock		—			—			—			1
Nonqualified deferred compensation plan assets		23			18			18			14
Derivative instruments		1			1			1			1
Total assets		$	41		$	36		$	34		$	33
Liabilities1
Nonqualified deferred compensation plan liabilities		$	23		$	18		$	18		$	14
Derivative instruments		17			8			—			—
Total liabilities		$	40		$	26		$	18		$	14

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