Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Change in Asset Retirement Obligation

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2014			Incurred			Settled			Accretion			Revisions			12/31/2015
CMS Energy, including Consumers
Consumers		$	339		$	11		$	(6)		$	20		$	74		$	438
Gas treating plant and gas wells			1			-			-			-			-			1
Total CMS Energy		$	340		$	11		$	(6)		$	20		$	74		$	439
Consumers
Coal ash disposal areas		$	120		$	-		$	-		$	6		$	74		$	200
Gas distribution cut, purge, and cap			162			11			(6)			11			-			178
Asbestos abatement			51			-			-			3			-			54
Wind parks			6			-			-			-			-			6
Total Consumers		$	339		$	11		$	(6)		$	20		$	74		$	438

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2013			Incurred			Settled			Accretion			Revisions			12/31/2014
CMS Energy, including Consumers
Consumers		$	324		$	9		$	(12)		$	18		$	-		$	339
Gas treating plant and gas wells			1			-			-			-			-			1
Total CMS Energy		$	325		$	9		$	(12)		$	18		$	-		$	340
Consumers
Coal ash disposal areas		$	118		$	-		$	(3)		$	5		$	-		$	120
Gas distribution cut, purge, and cap			154			6			(8)			10			-			162
Asbestos abatement			49			-			(1)			3			-			51
Wind parks			3			3			-			-			-			6
Total Consumers		$	324		$	9		$	(12)		$	18		$	-		$	339

Consumers Energy Company [Member]

Schedule of Change in Asset Retirement Obligation

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2014			Incurred			Settled			Accretion			Revisions			12/31/2015
CMS Energy, including Consumers
Consumers		$	339		$	11		$	(6)		$	20		$	74		$	438
Gas treating plant and gas wells			1			-			-			-			-			1
Total CMS Energy		$	340		$	11		$	(6)		$	20		$	74		$	439
Consumers
Coal ash disposal areas		$	120		$	-		$	-		$	6		$	74		$	200
Gas distribution cut, purge, and cap			162			11			(6)			11			-			178
Asbestos abatement			51			-			-			3			-			54
Wind parks			6			-			-			-			-			6
Total Consumers		$	339		$	11		$	(6)		$	20		$	74		$	438

In Millions
	ARO															ARO
	Liability												Cash flow			Liability
Company and ARO Description	12/31/2013			Incurred			Settled			Accretion			Revisions			12/31/2014
CMS Energy, including Consumers
Consumers		$	324		$	9		$	(12)		$	18		$	-		$	339
Gas treating plant and gas wells			1			-			-			-			-			1
Total CMS Energy		$	325		$	9		$	(12)		$	18		$	-		$	340
Consumers
Coal ash disposal areas		$	118		$	-		$	(3)		$	5		$	-		$	120
Gas distribution cut, purge, and cap			154			6			(8)			10			-			162
Asbestos abatement			49			-			(1)			3			-			51
Wind parks			3			3			-			-			-			6
Total Consumers		$	324		$	9		$	(12)		$	18		$	-		$	339