Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2017

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Discontinued Operations in Income Statement

A summary of the components of discontinued operations in Alliant Energy’s income statements for the three months ended March 31 was as follows (in millions):

	2017			2016
Operating expenses (income)		($2.3	)		$1.9
Income (loss) before income taxes	2.3			(1.9		)
Income tax expense (benefit)	0.9			(0.8		)
Income (loss) from discontinued operations, net of tax		$1.4			($1.1	)