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Discontinued Operations (Tables) | 6 Months Ended
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Jun. 30, 2014
Discontinued Operations and Disposal Groups [Abstract] |
Components Of Discontinued Operations In Income Statements | A summary of the components of discontinued operations in Alliant Energy’s income statements for the three and six months ended June 30 was as follows (in millions):
| Three Months |  | Six Months
| 2014 |  | 2013 |  | 2014 |  | 2013
Operating revenues |  | $— |  |  |  | $— |  |  |  | $— |  |  |  | $0.9 |
Operating expenses | 0.6 |  |  | 0.9 |  |  | 0.6 |  |  | 6.5 |
Loss before income taxes | (0.6 | ) |  | (0.9 | ) |  | (0.6 | ) |  | (5.6 | )
Income tax benefit | (0.3 | ) |  | (0.3 | ) |  | (0.3 | ) |  | (2.0 | )
Loss from discontinued operations, net of tax |  | ($0.3 | ) |  |  | ($0.6 | ) |  |  | ($0.3 | ) |  |  | ($3.6 | )

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- Definition Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1510-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1474-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228 + Details
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