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Accounts Receivable (Tables) | 6 Months Ended
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Jun. 30, 2012
Accounts Receivable |
Schedule of Accounts Receivable |
|  | June 30, 2012 |  |  | December 31, 2011 |
|  | (millions) |
Accounts receivable (1): |  |  |
Utility customers: |  |  |  |  |  |
Trade receivables |  | $ | 82.8 |  |  | $ | 124.2 |
Uranium loaned to customer (2) |  |  | 53.6 |  |  |  | - |
|  |  | 136.4 |  |  |  | 124.2 |
Contract services, primarily Department of Energy (3): |  |  |  |  |  |  |  |
Billed revenue |  |  | 34.8 |  |  |  | 18.8 |
Unbilled revenue |  |  | 2.2 |  |  |  | 19.0 |
|  |  | 37.0 |  |  |  | 37.8 |
|  | $ | 173.4 |  |  | $ | 162.0 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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