Segments Of Business

6 Months Ended

Jun. 30, 2012

Segment Reporting Information [Line Items]

SEGMENTS OF BUSINESS

Alliant Energy - Certain financial information relating to Alliant Energy’s business segments is as follows. As of June 30, 2012, Alliant Energy’s RMT business qualified as assets and liabilities held for sale. The operating results of RMT have been separately classified and reported as discontinued operations in Alliant Energy’s Condensed Consolidated Statements of Income. As a result, Alliant Energy no longer reports “Non-regulated - RMT” segment information. Intersegment revenues were not material to Alliant Energy’s operations.



	Utility									Non-Regulated,			Alliant Energy
	Electric		Gas		Other			Total		Parent and Other			Consolidated
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$612.6		$50.0		$13.8			$676.4		$13.9			$690.3
Operating income	91.8		3.6		1.5			96.9		11.9			108.8
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								51.8		13.7			65.5
Income from discontinued operations, net of tax								—		0.4			0.4
Net income attributable to Alliant Energy common shareowners								51.8		14.1			65.9
Three Months Ended June 30, 2011
Operating revenues		$620.5		$67.1		$13.3			$700.9		$11.6			$712.5
Operating income	62.2		0.9		0.9			64.0		6.6			70.6
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								21.8		28.5			50.3
Income from discontinued operations, net of tax								—		0.8			0.8
Net income attributable to Alliant Energy common shareowners								21.8		29.3			51.1
Six Months Ended June 30, 2012
Operating revenues		$1,185.0		$217.1		$27.5			$1,429.6		$26.4			$1,456.0
Operating income	150.9		31.3		3.2			185.4		19.0			204.4
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								78.2		26.6			104.8
Loss from discontinued operations, net of tax								—		(4.0		)	(4.0		)
Net income attributable to Alliant Energy common shareowners								78.2		22.6			100.8
Six Months Ended June 30, 2011
Operating revenues		$1,240.8		$296.1		$30.0			$1,566.9		$22.8			$1,589.7
Operating income (loss)	151.5		36.8		(2.4		)	185.9		12.0			197.9
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								87.1		35.2			122.3
Income from discontinued operations, net of tax								—		2.3			2.3
Net income attributable to Alliant Energy common shareowners								87.1		37.5			124.6

IPL - Certain financial information relating to IPL’s business segments is as follows. Intersegment revenues were not material to IPL’s operations.



	Electric		Gas		Other		Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$321.0		$26.8		$12.9		$360.7
Operating income	33.1		0.8		1.5		35.4
Earnings available for common stock							16.6
Three Months Ended June 30, 2011
Operating revenues		$323.9		$38.7		$11.5		$374.1
Operating income	16.9		0.6		1.0		18.5
Loss for common stock							(2.3		)
Six Months Ended June 30, 2012
Operating revenues		$614.1		$119.6		$25.7		$759.4
Operating income	39.8		15.0		4.5		59.3
Earnings available for common stock							11.9
Six Months Ended June 30, 2011
Operating revenues		$654.1		$170.6		$26.9		$851.6
Operating income	44.8		16.4		4.4		65.6
Earnings available for common stock							19.4

WPL - Certain financial information relating to WPL’s business segments is as follows. Intersegment revenues were not material to WPL’s operations.



	Electric		Gas		Other			Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$291.6		$23.2		$0.9			$315.7
Operating income	58.7		2.8		—			61.5
Earnings available for common stock								35.2
Three Months Ended June 30, 2011
Operating revenues		$296.6		$28.4		$1.8			$326.8
Operating income (loss)	45.3		0.3		(0.1		)	45.5
Earnings available for common stock								24.1
Six Months Ended June 30, 2012
Operating revenues		$570.9		$97.5		$1.8			$670.2
Operating income (loss)	111.1		16.3		(1.3		)	126.1
Earnings available for common stock								66.3
Six Months Ended June 30, 2011
Operating revenues		$586.7		$125.5		$3.1			$715.3
Operating income (loss)	106.7		20.4		(6.8		)	120.3
Earnings available for common stock								67.7

IPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

SEGMENTS OF BUSINESS



	Utility									Non-Regulated,			Alliant Energy
	Electric		Gas		Other			Total		Parent and Other			Consolidated
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$612.6		$50.0		$13.8			$676.4		$13.9			$690.3
Operating income	91.8		3.6		1.5			96.9		11.9			108.8
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								51.8		13.7			65.5
Income from discontinued operations, net of tax								—		0.4			0.4
Net income attributable to Alliant Energy common shareowners								51.8		14.1			65.9
Three Months Ended June 30, 2011
Operating revenues		$620.5		$67.1		$13.3			$700.9		$11.6			$712.5
Operating income	62.2		0.9		0.9			64.0		6.6			70.6
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								21.8		28.5			50.3
Income from discontinued operations, net of tax								—		0.8			0.8
Net income attributable to Alliant Energy common shareowners								21.8		29.3			51.1
Six Months Ended June 30, 2012
Operating revenues		$1,185.0		$217.1		$27.5			$1,429.6		$26.4			$1,456.0
Operating income	150.9		31.3		3.2			185.4		19.0			204.4
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								78.2		26.6			104.8
Loss from discontinued operations, net of tax								—		(4.0		)	(4.0		)
Net income attributable to Alliant Energy common shareowners								78.2		22.6			100.8
Six Months Ended June 30, 2011
Operating revenues		$1,240.8		$296.1		$30.0			$1,566.9		$22.8			$1,589.7
Operating income (loss)	151.5		36.8		(2.4		)	185.9		12.0			197.9
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								87.1		35.2			122.3
Income from discontinued operations, net of tax								—		2.3			2.3
Net income attributable to Alliant Energy common shareowners								87.1		37.5			124.6

IPL - Certain financial information relating to IPL’s business segments is as follows. Intersegment revenues were not material to IPL’s operations.



	Electric		Gas		Other		Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$321.0		$26.8		$12.9		$360.7
Operating income	33.1		0.8		1.5		35.4
Earnings available for common stock							16.6
Three Months Ended June 30, 2011
Operating revenues		$323.9		$38.7		$11.5		$374.1
Operating income	16.9		0.6		1.0		18.5
Loss for common stock							(2.3		)
Six Months Ended June 30, 2012
Operating revenues		$614.1		$119.6		$25.7		$759.4
Operating income	39.8		15.0		4.5		59.3
Earnings available for common stock							11.9
Six Months Ended June 30, 2011
Operating revenues		$654.1		$170.6		$26.9		$851.6
Operating income	44.8		16.4		4.4		65.6
Earnings available for common stock							19.4

WPL - Certain financial information relating to WPL’s business segments is as follows. Intersegment revenues were not material to WPL’s operations.



	Electric		Gas		Other			Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$291.6		$23.2		$0.9			$315.7
Operating income	58.7		2.8		—			61.5
Earnings available for common stock								35.2
Three Months Ended June 30, 2011
Operating revenues		$296.6		$28.4		$1.8			$326.8
Operating income (loss)	45.3		0.3		(0.1		)	45.5
Earnings available for common stock								24.1
Six Months Ended June 30, 2012
Operating revenues		$570.9		$97.5		$1.8			$670.2
Operating income (loss)	111.1		16.3		(1.3		)	126.1
Earnings available for common stock								66.3
Six Months Ended June 30, 2011
Operating revenues		$586.7		$125.5		$3.1			$715.3
Operating income (loss)	106.7		20.4		(6.8		)	120.3
Earnings available for common stock								67.7

WPL [Member]

Segment Reporting Information [Line Items]

Segments Of Business

SEGMENTS OF BUSINESS



	Utility									Non-Regulated,			Alliant Energy
	Electric		Gas		Other			Total		Parent and Other			Consolidated
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$612.6		$50.0		$13.8			$676.4		$13.9			$690.3
Operating income	91.8		3.6		1.5			96.9		11.9			108.8
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								51.8		13.7			65.5
Income from discontinued operations, net of tax								—		0.4			0.4
Net income attributable to Alliant Energy common shareowners								51.8		14.1			65.9
Three Months Ended June 30, 2011
Operating revenues		$620.5		$67.1		$13.3			$700.9		$11.6			$712.5
Operating income	62.2		0.9		0.9			64.0		6.6			70.6
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								21.8		28.5			50.3
Income from discontinued operations, net of tax								—		0.8			0.8
Net income attributable to Alliant Energy common shareowners								21.8		29.3			51.1
Six Months Ended June 30, 2012
Operating revenues		$1,185.0		$217.1		$27.5			$1,429.6		$26.4			$1,456.0
Operating income	150.9		31.3		3.2			185.4		19.0			204.4
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								78.2		26.6			104.8
Loss from discontinued operations, net of tax								—		(4.0		)	(4.0		)
Net income attributable to Alliant Energy common shareowners								78.2		22.6			100.8
Six Months Ended June 30, 2011
Operating revenues		$1,240.8		$296.1		$30.0			$1,566.9		$22.8			$1,589.7
Operating income (loss)	151.5		36.8		(2.4		)	185.9		12.0			197.9
Amounts attributable to Alliant Energy common shareowners:
Income from continuing operations, net of tax								87.1		35.2			122.3
Income from discontinued operations, net of tax								—		2.3			2.3
Net income attributable to Alliant Energy common shareowners								87.1		37.5			124.6

IPL - Certain financial information relating to IPL’s business segments is as follows. Intersegment revenues were not material to IPL’s operations.



	Electric		Gas		Other		Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$321.0		$26.8		$12.9		$360.7
Operating income	33.1		0.8		1.5		35.4
Earnings available for common stock							16.6
Three Months Ended June 30, 2011
Operating revenues		$323.9		$38.7		$11.5		$374.1
Operating income	16.9		0.6		1.0		18.5
Loss for common stock							(2.3		)
Six Months Ended June 30, 2012
Operating revenues		$614.1		$119.6		$25.7		$759.4
Operating income	39.8		15.0		4.5		59.3
Earnings available for common stock							11.9
Six Months Ended June 30, 2011
Operating revenues		$654.1		$170.6		$26.9		$851.6
Operating income	44.8		16.4		4.4		65.6
Earnings available for common stock							19.4

WPL - Certain financial information relating to WPL’s business segments is as follows. Intersegment revenues were not material to WPL’s operations.



	Electric		Gas		Other			Total
	(in millions)
Three Months Ended June 30, 2012
Operating revenues		$291.6		$23.2		$0.9			$315.7
Operating income	58.7		2.8		—			61.5
Earnings available for common stock								35.2
Three Months Ended June 30, 2011
Operating revenues		$296.6		$28.4		$1.8			$326.8
Operating income (loss)	45.3		0.3		(0.1		)	45.5
Earnings available for common stock								24.1
Six Months Ended June 30, 2012
Operating revenues		$570.9		$97.5		$1.8			$670.2
Operating income (loss)	111.1		16.3		(1.3		)	126.1
Earnings available for common stock								66.3
Six Months Ended June 30, 2011
Operating revenues		$586.7		$125.5		$3.1			$715.3
Operating income (loss)	106.7		20.4		(6.8		)	120.3
Earnings available for common stock								67.7

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details