Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2011

Schedule of Change in Asset Retirement Obligation Table

In Millions
Company and ARO Description		ARO Liability 12/31/10		Incurred			Settled			Accretion		Cash flow Revisions		ARO Liability 12/31/11
CMS ENERGY, INCLUDING CONSUMERS
Close gas treating plant and gas wells	$	1	$	-		$	-		$	-	$	-	$	1
Consumers		244		(2	)		(7	)		18		-		253
Total CMS Energy	$	245	$	(2	)	$	(7	)	$	18	$	-	$	254
CONSUMERS
Coal ash disposal areas	$	66	$	-		$	(2	)	$	6	$	-	$	70
Wells at gas storage fields		1		-			-			-		-		1
Indoor gas services relocations		1		-			(1	)		-		-		-
Asbestos abatement		40		-			(1	)		3		-		42
Gas distribution cut, purge, and cap		136		(2	)		(3	)		9		-		140
Total Consumers	$	244	$	(2	)	$	(7	)	$	18	$	-	$	253

In Millions
Company and ARO Description		ARO Liability 12/31/09		Incurred		Settled			Accretion		Cash flow Revisions		ARO Liability 12/31/10
CMS ENERGY, INCLUDING CONSUMERS
Close gas treating plant and gas wells	$	1	$	-	$	-		$	-	$	-	$	1
Consumers		228		6		(7	)		17		-		244
Total CMS Energy	$	229	$	6	$	(7	)	$	17	$	-	$	245
CONSUMERS
Coal ash disposal areas	$	64	$	-	$	(4	)	$	6	$	-	$	66
Wells at gas storage fields		1		-		-			-		-		1
Indoor gas services relocations		1		-		-			-		-		1
Asbestos abatement		38		-		(1	)		3		-		40
Gas distribution cut, purge, and cap		124		6		(2	)		8		-		136
Total Consumers	$	228	$	6	$	(7	)	$	17	$	-	$	244

Consumers Energy Company [Member]

Schedule of Change in Asset Retirement Obligation Table

In Millions
Company and ARO Description		ARO Liability 12/31/10		Incurred			Settled			Accretion		Cash flow Revisions		ARO Liability 12/31/11
CMS ENERGY, INCLUDING CONSUMERS
Close gas treating plant and gas wells	$	1	$	-		$	-		$	-	$	-	$	1
Consumers		244		(2	)		(7	)		18		-		253
Total CMS Energy	$	245	$	(2	)	$	(7	)	$	18	$	-	$	254
CONSUMERS
Coal ash disposal areas	$	66	$	-		$	(2	)	$	6	$	-	$	70
Wells at gas storage fields		1		-			-			-		-		1
Indoor gas services relocations		1		-			(1	)		-		-		-
Asbestos abatement		40		-			(1	)		3		-		42
Gas distribution cut, purge, and cap		136		(2	)		(3	)		9		-		140
Total Consumers	$	244	$	(2	)	$	(7	)	$	18	$	-	$	253

In Millions
Company and ARO Description		ARO Liability 12/31/09		Incurred		Settled			Accretion		Cash flow Revisions		ARO Liability 12/31/10
CMS ENERGY, INCLUDING CONSUMERS
Close gas treating plant and gas wells	$	1	$	-	$	-		$	-	$	-	$	1
Consumers		228		6		(7	)		17		-		244
Total CMS Energy	$	229	$	6	$	(7	)	$	17	$	-	$	245
CONSUMERS
Coal ash disposal areas	$	64	$	-	$	(4	)	$	6	$	-	$	66
Wells at gas storage fields		1		-		-			-		-		1
Indoor gas services relocations		1		-		-			-		-		1
Asbestos abatement		38		-		(1	)		3		-		40
Gas distribution cut, purge, and cap		124		6		(2	)		8		-		136
Total Consumers	$	228	$	6	$	(7	)	$	17	$	-	$	244