SEGMENTS OF BUSINESS (Tables)

9 Months Ended

Sep. 30, 2011

SEGMENTS OF BUSINESS

Schedule of segment revenues and net income (loss) attributed to common shareholders

	Regulated Operations											Nonutility and Nonregulated Operations
(Millions)	Natural Gas Utility			Electric Utility			Electric Transmission Investment		Total Regulated Operations			Integrys Energy Services			Holding Company and Other			Reconciling Eliminations			Integrys Energy Group Consolidated
Three Months Ended September 30, 2011
External revenues	$	235.0		$	361.2		$	—	$	596.2		$	337.1		$	5.4		$	—		$	938.7
Intersegment revenues	4.3			6.3			—		10.6			0.3			0.3			(11.2		)	—
Depreciation and amortization expense	31.7			22.0			—		53.7			3.1			5.7			(0.1		)	62.4
Miscellaneous income (expense)	0.2			0.1			19.9		20.2			(0.3		)	4.9			(3.9		)	20.9
Interest expense	11.8			9.4			—		21.2			0.7			13.4			(3.9		)	31.4
Provision (benefit) for income taxes	(13.5		)	24.0			7.7		18.2			6.0			(1.5		)	—			22.7
Net income (loss) from continuing operations	(19.9		)	40.1			12.2		32.4			10.9			(5.7		)	—			37.6
Discontinued operations	—			—			—		—			—			—			—			—
Preferred stock dividends of subsidiary	(0.1		)	(0.6		)	—		(0.7		)	—			—			—			(0.7		)
Net income (loss) attributed to common shareholders	(20.0		)	39.5			12.2		31.7			10.9			(5.7		)	—			36.9

	Regulated Operations											Nonutility and Nonregulated Operations
(Millions)	Natural Gas Utility			Electric Utility			Electric Transmission Investment		Total Regulated Operations			Integrys Energy Services			Holding Company and Other			Reconciling Eliminations			Integrys Energy Group Consolidated
Three Months Ended September 30, 2010
External revenues	$	234.1		$	364.5		$	—	$	598.6		$	396.3		$	3.0		$	—		$	997.9
Intersegment revenues	0.2			10.0			—		10.2			—			—			(10.2		)	—
Impairment losses on property, plant, and equipment	—			—			—		—			43.2			—			—			43.2
Restructuring expense	—			(0.2		)	—		(0.2		)	(0.1		)	—			—			(0.3		)
Net gain on Integrys Energy Services’ dispositions related to strategy change	—			—			—		—			(0.2		)	—			—			(0.2		)
Depreciation and amortization expense	34.9			22.8			—		57.7			4.8			6.5			—			69.0
Miscellaneous income	0.5			0.4			19.2		20.1			5.1			10.4			(9.3		)	26.3
Interest expense	12.5			10.8			—		23.3			1.0			20.2			(9.3		)	35.2
Provision (benefit) for income taxes	(16.8		)	24.6			7.7		15.5			(4.3		)	(2.0		)	—			9.2
Net income (loss) from continuing operations	(24.2		)	46.0			11.5		33.3			(7.5		)	(4.7		)	—			21.1
Preferred stock dividends of subsidiary	(0.2		)	(0.5		)	—		(0.7		)	—			—			—			(0.7		)
Net income (loss) attributed to common shareholders	(24.4		)	45.5			11.5		32.6			(7.5		)	(4.7		)	—			20.4

	Regulated Operations											Nonutility and Nonregulated Operations
(Millions)	Natural Gas Utility			Electric Utility			Electric Transmission Investment		Total Regulated Operations			Integrys Energy Services		Holding Company and Other			Reconciling Eliminations			Integrys Energy Group Consolidated
Nine Months Ended September 30, 2011
External revenues	$	1,447.5		$	988.2		$	—	$	2,435.7		$	1,128.5	$	12.4		$	—		$	3,576.6
Intersegment revenues	9.2			17.3			—		26.5			0.7		1.0			(28.2		)	—
Depreciation and amortization expense	94.2			66.1			—		160.3			9.6		17.4			(0.4		)	186.9
Miscellaneous income	1.6			0.6			59.0		61.2			1.0		17.1			(15.6		)	63.7
Interest expense	36.4			33.2			—		69.6			1.7		42.7			(15.6		)	98.4
Provision (benefit) for income taxes	39.6			46.6			23.4		109.6			16.7		(5.8		)	—			120.5
Net income (loss) from continuing operations	58.8			84.7			35.6		179.1			27.6		(14.9		)	—			191.8
Discontinued operations	—			—			—		—			0.1		(0.9		)	—			(0.8		)
Preferred stock dividends of subsidiary	(0.4		)	(1.9		)	—		(2.3		)	—		—			—			(2.3		)
Net income (loss) attributed to common shareholders	58.4			82.8			35.6		176.8			27.7		(15.8		)	—			188.7

	Regulated Operations											Nonutility and Nonregulated Operations
(Millions)	Natural Gas Utility			Electric Utility			Electric Transmission Investment		Total Regulated Operations			Integrys Energy Services			Holding Company and Other			Reconciling Eliminations			Integrys Energy Group Consolidated
Nine Months Ended September 30, 2010
External revenues	$	1,457.5		$	1,008.5		$	—	$	2,466.0		$	1,441.1		$	9.0		$	—		$	3,916.1
Intersegment revenues	0.5			21.7			—		22.2			1.0			—			(23.2		)	—
Impairment losses on property, plant, and equipment	—			—			—		—			43.2			—			—			43.2
Restructuring expense	(0.1		)	(0.3		)	—		(0.4		)	9.1			0.2			—			8.9
Net loss on Integrys Energy Services’ dispositions related to strategy change	—			—			—		—			14.6			—			—			14.6
Depreciation and amortization expense	98.2			71.8			—		170.0			13.8			17.1			—			200.9
Miscellaneous income	1.3			0.9			57.9		60.1			8.0			33.7			(30.7		)	71.1
Interest expense	38.4			32.3			—		70.7			5.8			65.4			(30.7		)	111.2
Provision (benefit) for income taxes	38.6			56.5			23.3		118.4			(5.6		)	(9.2		)	—			103.6
Net income (loss) from continuing operations	44.1			99.6			34.6		178.3			(10.4		)	(16.8		)	—			151.1
Discontinued operations	—			—			—		—			0.1			—			—			0.1
Preferred stock dividends of subsidiary	(0.5		)	(1.8		)	—		(2.3		)	—			—			—			(2.3		)
Noncontrolling interest in subsidiaries	—			—			—		—			0.3			—			—			0.3
Net income (loss) attributed to common shareholders	43.6			97.8			34.6		176.0			(10.0		)	(16.8		)	—			149.2