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v2.3.0.11

Contingencies (Details) (USD $) | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2011 | Dec. 31, 2008 | Dec. 31, 2005 | Sep. 30, 2010 | Sep. 30, 2008 | Dec. 31, 2003
Loss Contingencies [Line Items] |  |  |  |  |  |
Customer refund for Trojan Investment, net of Interest |  |  |  |  | $ 15,400,000 |
Interest Rate Applied to Trojan Refund |  |  |  |  | 9.60% |
Refund to customers for Trojan Investment including interest |  |  |  |  | 33,100,000 |
Class action damages sought |  |  |  |  |  | 260,000,000
Annual charges for state and federal income taxes |  |  | 92,600,000 |  |  |
Deferred Liability Under Sb 408 For 2005 |  |  | 26,500,000 |  |  |
Daily Penalty Sought Per Violation Before March 15 2004 |  |  |  |  | 27,500 |
Daily Penalty Sought Per Violation After March 15 2004 |  |  |  |  | 32,500 |
Payable for environmental projects | 2,500,000 |  |  |  |  |
Payable for legal expenses | 1,000,000 |  |  |  |  |
Settlement Expenses For Sierra Club Claim | 2,000,000 |  |  |  |  |
Total penalties and damages asserted in Sierra Club Lawsuit |  |  |  |  | 60,000,000 |
Maximum civil penalties the EPA is authorized to impose under the CAA for violations of the NSPS |  |  |  | 25,000 |  |
Maximum civil penalties the EPA is authorized to impose under the CAA for violations of the NSPS - upper range |  |  |  | 37,500 |  |
Repayments of Pollution Control Bond |  | $ 5,800,000 |  |  |  |

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- Definition Maximum civil penalties the EPA is authorized to impose under the Clean Air Act for violations of the New Source Performance Standards - Lower Range + Details
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- Definition The cash outflow from settlement of a long-term debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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