Contingencies And Commitments (Tables)

6 Months Ended

Jun. 30, 2019

Site Contingency [Line Items]

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at June 30, 2019:

In Millions
Guarantee Description	Issue Date		Expiration Date		Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from stock and asset sale agreements1		various		indefinite		$	153		$	2
Guarantees2		various		indefinite		36			—
Consumers
Guarantee2		July 2011		indefinite		$	30		$	—

¹  These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

² 

At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee.

Consumers Energy Company

Site Contingency [Line Items]

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at June 30, 2019:

In Millions
Guarantee Description	Issue Date		Expiration Date		Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from stock and asset sale agreements1		various		indefinite		$	153		$	2
Guarantees2		various		indefinite		36			—
Consumers
Guarantee2		July 2011		indefinite		$	30		$	—

¹  These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

²  At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee.

Bay Harbor

Site Contingency [Line Items]

Expected Remediation Costs By Year

CMS Energy expects to pay the following amounts for long‑term liquid disposal and operating and maintenance costs during the remainder of 2019 and in each of the next five years:

In Millions
	2019			2020			2021			2022			2023			2024
CMS Energy
Long‑term liquid disposal and operating and maintenance costs		$	2		$	4		$	4		$	4		$	4		$	4

Gas Utility | Manufactured Gas Plant | Consumers Energy Company

Site Contingency [Line Items]

Expected Remediation Costs By Year

Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2019 and in each of the next five years: 

In Millions
	2019			2020			2021			2022			2023			2024
Consumers
Remediation and other response activity costs		$	8		$	16		$	21		$	7		$	2		$	2