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Discontinued Operations and Assets and Liabilities Held For Sale | 12 Months Ended
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Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract] |
Discontinued Operations | DISCONTINUED OPERATIONS AND ASSETS AND LIABILITIES HELD FOR SALE In 2011, Alliant Energy sold its IEA business and RMT’s environmental business unit to narrow its strategic focus and risk profile and received aggregate net proceeds of $17 million for these businesses. In 2013, Alliant Energy sold the remainder of its RMT business to further narrow its strategic focus and risk pr ofile. Alliant Energy did not recognize any material gains or losses related to the sales of these businesses. Allia nt Energy does not currently believe that adjustments to the gain or loss related to the sale of the remainder of RMT in periods after December 31, 2013 will be material. The operating results of RMT and IEA have been separately classified and reported as discontinued operations in Alliant Energy’s 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):
| 2013 |  | 2012 |  | 2011
Operating revenues |  | $0.9 |  |  |  | $289.2 |  |  |  | $445.0 |
Operating expenses | 9.9 |  |  | 297.0 |  |  | 476.9 |
Interest expense and other | — |  |  | 0.7 |  |  | — |
Loss before income taxes | (9.0 | ) |  | (8.5 | ) |  | (31.9 | )
Income tax benefit | (3.1 | ) |  | (3.4 | ) |  | (12.4 | )
Loss from discontinued operations, net of tax |  | ($5.9 | ) |  |  | ($5.1 | ) |  |  | ($19.5 | )
As of December 31, 2012, Alliant Energy’s Consolidated Balance Sheet included assets held for sale recorded in “Other current assets” and liabilities held for sale recorded in “Other current liabilities” as follows (in millions):
Current assets |  | $27.9 |
Current liabilities | 31.4 |
Net liabilities held for sale |  | ($3.5 | )

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- Definition The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, 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 segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230 Reference 2: 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 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1012-107759 Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1020-107759 Reference 7: 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 Reference 8: 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 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760 + Details
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