Financings And Capitalization (Tables)

12 Months Ended

Dec. 31, 2015

Summary Of Long-Term Debt Outstanding

In Millions
	Interest Rate  (%)		Maturity	2015			2014
CMS Energy parent
Senior notes	6.550		2017		$	250		$	250
	5.050		2018			250			250
	8.750		2019			300			300
	6.250		2020			300			300
	5.050		2022			300			300
	3.875		2024			250			250
	3.600		2025			250			-
	4.700		2043			250			250
	4.875		2044			300			300
Total CMS Energy senior notes					$	2,450		$	2,200
Term loan facility	variable	1	2017			180			180
Total CMS Energy parent					$	2,630		$	2,380
Consumers					$	5,409		$	5,283
Other CMS Energy subsidiaries
EnerBank certificates of deposit	1.365	2	2016-2025		$	1,098		$	884
Total other CMS Energy subsidiaries					$	1,098		$	884
Total CMS Energy principal amount outstanding					$	9,137		$	8,547
Current amounts						(684)			(519)
Net unamortized discounts						(12)			(12)
Total CMS Energy long-term debt					$	8,441		$	8,016

¹ Outstanding borrowings bear interest at an annual interest rate of LIBOR plus 0.85 percent (1.19 percent at December 31, 2015).

² The weighted-average interest rate for EnerBank’s certificates of deposit was 1.36 percent at December 31, 2015 and 1.22 percent at December 31, 2014. EnerBank’s primary deposit product consists of brokered certificates of deposit with varying maturities and having a face value of $1,000.

Summary Of Major Long-Term Debt Transactions

	Principal					Issue/Retirement
	(In Millions)			Interest Rate		Date	Maturity Date
Debt issuances
CMS Energy parent
Senior notes		$	250	3.600	%	November 2015	November 2025
Total CMS Energy parent		$	250
Consumers
FMBs		$	250	4.100	%	November 2015	November 2045
Total Consumers		$	250
Total CMS Energy		$	500
Debt retirements
Consumers
FMBs		$	50	2.600	%	October 2015	October 2015
Total Consumers		$	50
Total CMS Energy		$	50

Debt Maturities

In Millions
	2016			2017			2018			2019			2020
CMS Energy, including Consumers
Long-term debt		$	684		$	1,010		$	911		$	1,288		$	801
Consumers
Long-term debt		$	198		$	375		$	523		$	876		$	426

Revolving Credit Facilities

In Millions
	Amount of			Amount			Letters of Credit			Amount
Expiration Date	Facility			Borrowed			Outstanding			Available
CMS Energy parent
May 27, 20201		$	550		$	-		$	1		$	549
Consumers
May 27, 20202		$	650		$	-		$	9		$	641
November 23, 20172,3			250			-			-			250
May 9, 20182			30			-			30			-

¹ Obligations under this facility are secured by Consumers common stock.  

² Obligations under this facility are secured by FMBs of Consumers.

³ In November 2015, Consumers entered into a new $250 million credit facility and terminated its $250 million accounts receivable sales program.

Consumers Energy Company [Member]

Summary Of Long-Term Debt Outstanding

In Millions
	Interest Rate  (%)		Maturity	2015			2014
Consumers
FMBs1	2.600		2015		$	-		$	50
	5.500		2016			173			173
	5.150		2017			250			250
	3.210		2017			100			100
	5.650		2018			250			250
	6.125		2019			350			350
	6.700		2019			500			500
	5.650		2020			300			300
	3.770		2020			100			100
	5.300		2022			250			250
	2.850		2022			375			375
	3.375		2023			325			325
	3.190		2024			52			52
	3.125		2024			250			250
	3.390		2027			35			35
	5.800		2035			175			175
	6.170		2040			50			50
	4.970		2040			50			50
	4.310		2042			263			263
	3.950		2043			425			425
	4.100		2045			250			-
	4.350		2064			250			250
					$	4,773		$	4,573
Securitization bonds	5.760		2015			-			49
	2.689	2	2020-2029	3		353			378
					$	353		$	427
Senior notes	6.875		2018			180			180
Tax-exempt pollution control revenue bonds	various		2018-2035			103			103
Total Consumers principal amount outstanding					$	5,409		$	5,283
Current amounts						(198)			(124)
Net unamortized discounts						(5)			(5)
Total Consumers long-term debt					$	5,206		$	5,154

¹ The weighted-average interest rate for Consumers’ FMBs was 4.73 percent at December 31, 2015 and 4.75 percent at December 31, 2014.

² The weighted-average interest rate for Consumers’ Securitization bonds issued through its subsidiary Consumers 2014 Securitization Funding was 2.69 percent at December 31, 2015 and 2.60 percent at December 31, 2014.

³ Principal and interest payments are made semiannually.

Summary Of Major Long-Term Debt Transactions

	Principal					Issue/Retirement
	(In Millions)			Interest Rate		Date	Maturity Date
Debt issuances
CMS Energy parent
Senior notes		$	250	3.600	%	November 2015	November 2025
Total CMS Energy parent		$	250
Consumers
FMBs		$	250	4.100	%	November 2015	November 2045
Total Consumers		$	250
Total CMS Energy		$	500
Debt retirements
Consumers
FMBs		$	50	2.600	%	October 2015	October 2015
Total Consumers		$	50
Total CMS Energy		$	50

Debt Maturities

In Millions
	2016			2017			2018			2019			2020
CMS Energy, including Consumers
Long-term debt		$	684		$	1,010		$	911		$	1,288		$	801
Consumers
Long-term debt		$	198		$	375		$	523		$	876		$	426

Revolving Credit Facilities

In Millions
	Amount of			Amount			Letters of Credit			Amount
Expiration Date	Facility			Borrowed			Outstanding			Available
CMS Energy parent
May 27, 20201		$	550		$	-		$	1		$	549
Consumers
May 27, 20202		$	650		$	-		$	9		$	641
November 23, 20172,3			250			-			-			250
May 9, 20182			30			-			30			-

¹ Obligations under this facility are secured by Consumers common stock.  

² Obligations under this facility are secured by FMBs of Consumers.

³ In November 2015, Consumers entered into a new $250 million credit facility and terminated its $250 million accounts receivable sales program.

Issuance Of Stock

				Optional			Number of	Balance
				Redemption			Shares	Outstanding
	Series			Price			Outstanding	(In Millions)
December 31								2015			2014
Cumulative, $100 par value, authorized 7,500,000 shares, with no mandatory    redemption		$	4.50		$	110.00	373,148		$	37		$	37