Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2013

Reconciliation Of Segments To Consolidated

In Millions
Three Months Ended March 31	2013			2012
CMS Energy, including Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Enterprises			44			54
Other			16			14
Total operating revenue – CMS Energy		$	1,979		$	1,743
Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Total operating revenue – Consumers		$	1,919		$	1,675
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	66		$	21
Gas utility			96			55
Enterprises			4			5
Other			(22)			(14)
Total net income available to common stockholders – CMS Energy		$	144		$	67
Consumers
Net income available to common stockholder
Electric utility		$	66		$	21
Gas utility			96			55
Total net income available to common stockholder – Consumers		$	162		$	76

In Millions
	March 31, 2013			December 31, 2012
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Enterprises			113			113
Other			38			38
Total plant, property, and equipment, gross – CMS Energy		$	15,732		$	15,592
Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Other			15			15
Total plant, property, and equipment, gross – Consumers		$	15,596		$	15,456
CMS Energy, including Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Enterprises			181			181
Other			1,750			1,511
Total assets – CMS Energy		$	17,269		$	17,131
Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Other			934			836
Total assets – Consumers		$	16,272		$	16,275

¹ Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

Consumers Energy Company [Member]

Reconciliation Of Segments To Consolidated

In Millions
Three Months Ended March 31	2013			2012
CMS Energy, including Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Enterprises			44			54
Other			16			14
Total operating revenue – CMS Energy		$	1,979		$	1,743
Consumers
Operating revenue
Electric utility		$	961		$	836
Gas utility			958			839
Total operating revenue – Consumers		$	1,919		$	1,675
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	66		$	21
Gas utility			96			55
Enterprises			4			5
Other			(22)			(14)
Total net income available to common stockholders – CMS Energy		$	144		$	67
Consumers
Net income available to common stockholder
Electric utility		$	66		$	21
Gas utility			96			55
Total net income available to common stockholder – Consumers		$	162		$	76

In Millions
	March 31, 2013			December 31, 2012
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Enterprises			113			113
Other			38			38
Total plant, property, and equipment, gross – CMS Energy		$	15,732		$	15,592
Consumers
Plant, property, and equipment, gross
Electric utility		$	11,118		$	11,041
Gas utility			4,463			4,400
Other			15			15
Total plant, property, and equipment, gross – Consumers		$	15,596		$	15,456
CMS Energy, including Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Enterprises			181			181
Other			1,750			1,511
Total assets – CMS Energy		$	17,269		$	17,131
Consumers
Total assets
Electric utility1		$	10,640		$	10,423
Gas utility1			4,698			5,016
Other			934			836
Total assets – Consumers		$	16,272		$	16,275

¹ Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.