Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Schedule Of Restricted Stock Activity

	CMS Energy, including Consumers				Consumers
Year Ended December 31, 2014	Number of Shares	Weighted-Average Grant Date Fair Value per Share			Number of Shares	Weighted-Average Grant Date Fair Value per Share
Nonvested at beginning of period	1,625,856		$	22.42	1,562,202		$	22.31
Granted	863,742			26.15	831,069			26.18
Vested	(756,310)			21.51	(727,737)			21.26
Forfeited	(53,693)			24.41	(50,850)			24.45
Nonvested at end of period	1,679,595		$	24.69	1,614,684		$	24.71

Year Ended December 31, 2014	CMS Energy, including  Consumers	Consumers
Shares Granted
Time-lapse awards	289,510	282,990
Market-based awards	169,409	162,264
Performance-based awards	169,409	162,264
Dividends on market-based awards	29,579	28,199
Dividends on performance-based awards	6,146	5,888
Additional market-based shares based on achievement of condition	199,689	189,464
Total shares granted	863,742	831,069

Schedule of Share-based Payment Award, Restricted Stock, Valuation Assumptions

Years Ended December 31	2014			2013			2012
Expected volatility		15.6	%		17.4	%		20.3	%
Expected dividend yield		3.7			3.9			4.1
Risk-free rate		0.8			0.4			0.3

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Weighted-average grant-date fair value per share
Restricted stock granted		$	26.15		$	16.65		$	12.32
Consumers
Weighted-average grant-date fair value per share
Restricted stock granted		$	26.18		$	16.76		$	12.28

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

In Millions
Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Fair value of shares that vested during the year		$	16		$	10		$	10
Compensation expense recognized			14			14			12
Income tax benefit recognized			5			5			5
Consumers
Fair value of shares that vested during the year		$	15		$	9		$	8
Compensation expense recognized			13			14			11
Income tax benefit recognized			5			5			4

Consumers Energy Company [Member]

Schedule Of Restricted Stock Activity

	CMS Energy, including Consumers				Consumers
Year Ended December 31, 2014	Number of Shares	Weighted-Average Grant Date Fair Value per Share			Number of Shares	Weighted-Average Grant Date Fair Value per Share
Nonvested at beginning of period	1,625,856		$	22.42	1,562,202		$	22.31
Granted	863,742			26.15	831,069			26.18
Vested	(756,310)			21.51	(727,737)			21.26
Forfeited	(53,693)			24.41	(50,850)			24.45
Nonvested at end of period	1,679,595		$	24.69	1,614,684		$	24.71

Year Ended December 31, 2014	CMS Energy, including  Consumers	Consumers
Shares Granted
Time-lapse awards	289,510	282,990
Market-based awards	169,409	162,264
Performance-based awards	169,409	162,264
Dividends on market-based awards	29,579	28,199
Dividends on performance-based awards	6,146	5,888
Additional market-based shares based on achievement of condition	199,689	189,464
Total shares granted	863,742	831,069

Schedule of Share-based Payment Award, Restricted Stock, Valuation Assumptions

Years Ended December 31	2014			2013			2012
Expected volatility		15.6	%		17.4	%		20.3	%
Expected dividend yield		3.7			3.9			4.1
Risk-free rate		0.8			0.4			0.3

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Weighted-average grant-date fair value per share
Restricted stock granted		$	26.15		$	16.65		$	12.32
Consumers
Weighted-average grant-date fair value per share
Restricted stock granted		$	26.18		$	16.76		$	12.28

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

In Millions
Years Ended December 31	2014			2013			2012
CMS Energy, including Consumers
Fair value of shares that vested during the year		$	16		$	10		$	10
Compensation expense recognized			14			14			12
Income tax benefit recognized			5			5			5
Consumers
Fair value of shares that vested during the year		$	15		$	9		$	8
Compensation expense recognized			13			14			11
Income tax benefit recognized			5			5			4