Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

In Millions
	March 31, 2018															December 31, 2017
				Fair Value															Fair Value
	Carrying						Level									Carrying						Level
	Amount			Total			1			2			3			Amount			Total			1			2			3
CMS Energy, including Consumers
Assets
Long-term    receivables1		$	20		$	20		$	-		$	-		$	20		$	21		$	21		$	-		$	-		$	21
Notes    receivable2			1,370			1,453			-			-			1,453			1,371			1,464			-			-			1,464
Securities held    to maturity			17			17			-			17			-			16			16			-			16			-
Liabilities
Long-term    debt3			10,261			10,273			-			8,971			1,302			10,204			10,715			-			9,363			1,352
Long-term    payables4			25			26			-			-			26			27			26			-			-			26
Consumers
Assets
Long-term    receivables1		$	20		$	20		$	-		$	-		$	20		$	21		$	21		$	-		$	-		$	21
Notes    receivable5			17			17			-			-			17			17			17			-			-			17
Liabilities
Long-term    debt6			5,904			6,034			-			4,732			1,302			5,904			6,236			-			4,883			1,353

1Includes current accounts receivable of $13 million at March 31, 2018 and $14 million at December 31, 2017.

2Includes current portion of notes receivable of $203 million at March 31, 2018 and $200 million at December 31, 2017.

3Includes current portion of long-term debt of $1.3 billion at March 31, 2018 and $ 1.1 billion at December 31, 2017.

4Includes current portion of long-term payables of $2 million at March 31, 2018 and $3 million at December 31, 2017.

5Includes current portion of notes receivable of $17 million at March 31, 2018 and $17 million at December 31, 2017.

6Includes current portion of long-term debt of $693million at March 31, 2018 and $343 million at December 31, 2017.

Schedule Of Investment Securities

In Millions
	March 31, 2018												December 31, 2017
				Unrealized			Unrealized			Fair						Unrealized			Unrealized			Fair
	Cost			Gains			Losses			Value			Cost			Gains			Losses			Value
CMS Energy, including Consumers
Available for sale
DB SERP
Debt securities		$	139		$	-		$	(2)		$	137		$	141		$	-		$	-		$	141
Held to maturity
Debt securities			17			-			-			17			16			-			-			16
Consumers
Available for sale
DB SERP
Debt securities		$	101		$	-		$	(1)		$	100		$	102		$	-		$	-		$	102
CMS Energy    common stock1			-			-			-			-			2			19			-			21

1In January 2018, Consumers implemented ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. In accordance with the standard, as of January 1, 2018, Consumers removed a $19 million unrealized gain on its investment in CMS Energy common stock from AOCI and recorded the gain in retained earnings. For further details on CMS Energy’s and Consumers’ accounting for this new standard, see Note 1, New Accounting Standards.

In January 2018, Consumers transferred substantially all of its shares in CMS Energy common stock to a related charitable foundation. Consumers’ remaining equity investment in CMS Energy common stock was $1 million at March 31, 2018. There were no material changes in the fair value of Consumers’ investment in CMS Energy common stock during the three months ended March 31, 2018.

Consumers Energy Company [Member]

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

In Millions
	March 31, 2018															December 31, 2017
				Fair Value															Fair Value
	Carrying						Level									Carrying						Level
	Amount			Total			1			2			3			Amount			Total			1			2			3
CMS Energy, including Consumers
Assets
Long-term    receivables1		$	20		$	20		$	-		$	-		$	20		$	21		$	21		$	-		$	-		$	21
Notes    receivable2			1,370			1,453			-			-			1,453			1,371			1,464			-			-			1,464
Securities held    to maturity			17			17			-			17			-			16			16			-			16			-
Liabilities
Long-term    debt3			10,261			10,273			-			8,971			1,302			10,204			10,715			-			9,363			1,352
Long-term    payables4			25			26			-			-			26			27			26			-			-			26
Consumers
Assets
Long-term    receivables1		$	20		$	20		$	-		$	-		$	20		$	21		$	21		$	-		$	-		$	21
Notes    receivable5			17			17			-			-			17			17			17			-			-			17
Liabilities
Long-term    debt6			5,904			6,034			-			4,732			1,302			5,904			6,236			-			4,883			1,353

1Includes current accounts receivable of $13 million at March 31, 2018 and $14 million at December 31, 2017.

2Includes current portion of notes receivable of $203 million at March 31, 2018 and $200 million at December 31, 2017.

3Includes current portion of long-term debt of $1.3 billion at March 31, 2018 and $ 1.1 billion at December 31, 2017.

4Includes current portion of long-term payables of $2 million at March 31, 2018 and $3 million at December 31, 2017.

5Includes current portion of notes receivable of $17 million at March 31, 2018 and $17 million at December 31, 2017.

6Includes current portion of long-term debt of $693million at March 31, 2018 and $343 million at December 31, 2017.

Schedule Of Investment Securities

In Millions
	March 31, 2018												December 31, 2017
				Unrealized			Unrealized			Fair						Unrealized			Unrealized			Fair
	Cost			Gains			Losses			Value			Cost			Gains			Losses			Value
CMS Energy, including Consumers
Available for sale
DB SERP
Debt securities		$	139		$	-		$	(2)		$	137		$	141		$	-		$	-		$	141
Held to maturity
Debt securities			17			-			-			17			16			-			-			16
Consumers
Available for sale
DB SERP
Debt securities		$	101		$	-		$	(1)		$	100		$	102		$	-		$	-		$	102
CMS Energy    common stock1			-			-			-			-			2			19			-			21

1In January 2018, Consumers implemented ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. In accordance with the standard, as of January 1, 2018, Consumers removed a $19 million unrealized gain on its investment in CMS Energy common stock from AOCI and recorded the gain in retained earnings. For further details on CMS Energy’s and Consumers’ accounting for this new standard, see Note 1, New Accounting Standards.

In January 2018, Consumers transferred substantially all of its shares in CMS Energy common stock to a related charitable foundation. Consumers’ remaining equity investment in CMS Energy common stock was $1 million at March 31, 2018. There were no material changes in the fair value of Consumers’ investment in CMS Energy common stock during the three months ended March 31, 2018.