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Cash And Cash Equivalents
 9 Months Ended
Sep. 30, 2021
Cash and Cash Equivalents [Line Items]  
Cash And Cash Equivalents Cash and Cash Equivalents
Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
In Millions
September 30, 2021December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents$102 $32 
Restricted cash and cash equivalents30 17 
Current assets held for sale104 136 
Cash and cash equivalents, including restricted amounts – CMS Energy$236 $185 
Consumers
Cash and cash equivalents$29 $20 
Restricted cash and cash equivalents26 15 
Cash and cash equivalents, including restricted amounts – Consumers$55 $35 
Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.
Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.
Current Assets Held for Sale: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s cash and cash equivalents are presented as assets held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.
Consumers Energy Company  
Cash and Cash Equivalents [Line Items]  
Cash And Cash Equivalents Cash and Cash Equivalents
Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
In Millions
September 30, 2021December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents$102 $32 
Restricted cash and cash equivalents30 17 
Current assets held for sale104 136 
Cash and cash equivalents, including restricted amounts – CMS Energy$236 $185 
Consumers
Cash and cash equivalents$29 $20 
Restricted cash and cash equivalents26 15 
Cash and cash equivalents, including restricted amounts – Consumers$55 $35 
Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.
Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.
Current Assets Held for Sale: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s cash and cash equivalents are presented as assets held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.