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Investment in ATC | 12 Months Ended
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Dec. 31, 2012
Investment in ATC [Abstract] |
Investment in ATC [Text Block] | INVESTMENT IN ATC Investment in ATC. Our wholly-owned subsidiary, Rainy River Energy, owns approximately 8 percent of ATC, a Wisconsin-based utility that owns and maintains electric transmission assets in parts of Wisconsin, Michigan, Minnesota, and Illinois. ATC rates are FERC-approved and are based on a 12.2 percent return on common equity dedicated to utility plant. We account for our investment in ATC under the equity method of accounting. As of December 31, 2012, our equity investment in ATC was $107.3 million ($98.9 million at December 31, 2011). On January 30, 2013, we invested an additional $0.4 million in ATC. In total, we expect to invest approximately $2.0 million throughout 2013.
ALLETE’s Interest in ATC |  |
Year Ended December 31 | 2012 | 2011
Millions |  |
Equity Investment Beginning Balance |  | $98.9 |  |  | $93.3 |
Cash Investments | 4.7 |  | 2.0 |
Equity in ATC Earnings | 19.4 |  | 18.4 |
Distributed ATC Earnings | (15.7 | ) | (14.8 | )
Equity Investment Ending Balance |  | $107.3 |  |  | $98.9 |
NOTE 6. INVESTMENT IN ATC (Continued)
ATC Summarized Financial Data |  |
Balance Sheet Data |  |
As of December 31 | 2012 | 2011
Millions |  |
Current Assets |  | $63.1 |  |  | $58.7 |
Non-Current Assets | 3,274.7 |  | 3,053.7 |
Total Assets |  | $3,337.8 |  |  | $3,112.4 |
Current Liabilities |  | $251.5 |  |  | $298.5 |
Long-Term Debt | 1,550.0 |  | 1,400.0 |
Other Non-Current Liabilities | 95.8 |  | 82.6 |
Members’ Equity | 1,440.5 |  | 1,331.3 |
Total Liabilities and Members’ Equity |  | $3,337.8 |  |  | $3,112.4 |
Income Statement Data |  |  |
Year Ended December 31 | 2012 | 2011 | 2010
Millions |  |  |
Revenue |  | $603.2 |  |  | $567.2 |  |  | $556.7 |
Operating Expense | 281.0 |  | 261.6 |  | 251.1 |
Other Expense | 84.8 |  | 81.7 |  | 85.9 |
Net Income |  | $237.4 |  |  | $223.9 |  |  | $219.7 |
ALLETE’s Equity in Net Income |  | $19.4 |  |  | $18.4 |  |  | $17.9 |

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32787-111569 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32847-111569 + Details
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