Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

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
	March 31 2021			December 31 2020			March 31 2021			December 31 2020
Assets1
Restricted cash equivalents		$	28		$	17		$	25		$	15
Nonqualified deferred compensation plan assets		24			23			19			18
Derivative instruments		—			1			—			1
Total assets		$	52		$	41		$	44		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	24		$	23		$	19		$	18
Derivative instruments		14			17			—			—
Total liabilities		$	38		$	40		$	19		$	18

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
	March 31 2021			December 31 2020			March 31 2021			December 31 2020
Assets1
Restricted cash equivalents		$	28		$	17		$	25		$	15
Nonqualified deferred compensation plan assets		24			23			19			18
Derivative instruments		—			1			—			1
Total assets		$	52		$	41		$	44		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	24		$	23		$	19		$	18
Derivative instruments		14			17			—			—
Total liabilities		$	38		$	40		$	19		$	18

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