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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2023
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 ConsumersConsumers
September 30
2023
December 31
2022
September 30
2023
December 31
2022
Assets1
Cash equivalents$$— $— $— 
Restricted cash equivalents27 18 27 17 
Nonqualified deferred compensation plan assets27 24 20 18 
Derivative instruments
Total assets$65 $44 $50 $37 
Liabilities1
Nonqualified deferred compensation plan liabilities$27 $24 $20 $18 
Total liabilities$27 $24 $20 $18 
1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 3.
Consumers Energy Company  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets And Liabilities Measured At Fair Value On A Recurring Basis
Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
In Millions
CMS Energy, including ConsumersConsumers
September 30
2023
December 31
2022
September 30
2023
December 31
2022
Assets1
Cash equivalents$$— $— $— 
Restricted cash equivalents27 18 27 17 
Nonqualified deferred compensation plan assets27 24 20 18 
Derivative instruments
Total assets$65 $44 $50 $37 
Liabilities1
Nonqualified deferred compensation plan liabilities$27 $24 $20 $18 
Total liabilities$27 $24 $20 $18 
1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 3.