Discontinued Operations and Assets and Liabilities Held for Sale (Tables)

12 Months Ended

Dec. 31, 2012

Discontinued Operations and Disposal Groups [Abstract]

Components Of Discontinued Operations In Consolidated Statements Of Income

A summary of the components of discontinued operations in Alliant Energy’s Consolidated Statements of Income was as follows (in millions):

	2012			2011			2010
Operating revenues		$289.2			$445.0			$160.3
Operating expenses	297.0			476.9			166.8
Interest expense and other	0.7			—			1.0
Loss before income taxes	(8.5		)	(31.9		)	(7.5		)
Income tax benefit	(3.4		)	(12.4		)	(3.6		)
Loss from discontinued operations, net of tax		($5.1	)		($19.5	)		($3.9	)

Assets and Liabilities Held For Sale on Consolidated Balance Sheets

A summary of the assets and liabilities held for sale on Alliant Energy’s Consolidated Balance Sheets as of December 31 was as follows (in millions):

	2012			2011
Assets held for sale:
Property, plant and equipment, net		$—			$3.8
Current assets	27.9			115.5
Other assets	—			0.3
Total assets held for sale	27.9			119.6
Liabilities held for sale:
Current liabilities	31.4			62.0
Other long-term liabilities and deferred credits	—			0.1
Total liabilities held for sale	31.4			62.1
Net assets (liabilities) held for sale		($3.5	)		$57.5