XML 85 R27.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Acquisition (Table) | 9 Months Ended
--- | ---
Sep. 30, 2014
Acquisition [Abstract] |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
Millions |
Assets Acquired |
Cash and Cash Equivalents |  | $3.8 |
Other Current Assets | 14.3 |
Property, Plant and Equipment – Net | 156.9 |
Other Non-Current Assets (a) | 7.5 |
Total Assets Acquired |  | $182.5 |
Liabilities Assumed |
Other Current Liabilities (b) |  | $15.2 |
Long-Term Debt Due Within One Year | 2.2 |
Long-Term Debt | 21.1 |
Power Purchase Agreements | 99.4 |
Other Non-Current Liabilities | 10.6 |
Non-Controlling Interest (c) | 7.1 |
Total Liabilities and Non-Controlling Interest Assumed | 155.6 |
Net Identifiable Assets Acquired |  | $26.9 |
(a) | Included in Other Non-Current Assets was $0.3 million for the option to purchase Armenia Mountain in 2015, and goodwill of $2.9 million; for tax purposes, the purchase price allocation resulted in no allocation to goodwill.
(b) | Other Current Liabilities included $12.4 million related to the current liabilities portion of the Power Purchase Agreements.
(c) | The purchase price accounting valued the non-controlling interest relating to Lake Benton, Storm Lake and Condon at fair value using the discounted cash flow method. The non-controlling interest related to Lake Benton and Storm Lake was subsequently purchased by ALLETE Clean Energy.

X
- Details
Name: | ale_AcquisitionAbstract
Namespace Prefix: | ale_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1486-128463 + Details
Name: | us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration