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Contingencies (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 claims | Jun. 30, 2014 claims | Dec. 31, 1997 | Dec. 31, 2013 claims | Sep. 30, 2008 | Sep. 30, 2000 | Dec. 31, 1993
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Investment in Trojan |  |  |  |  |  |  | 87.00%
Regulatory asset related to Trojan |  |  |  |  |  | $ 5,000,000 |
Refund to customers for Trojan Investment including interest |  |  |  |  | 33,100,000 |  |
Class action damages sought |  | 260,000,000 |  |  |  |  |
Contracts |  | 119 |  |  |  |  |
Site Contingency, Names of Other Potentially Responsible Parties |  | 100 | 69 |  |  |  |
Lower estimate of range of cost of Portland Harbor cleanup in total |  | 169,000,000 |  |  |  |  |
Upper estimated range of total cost of Portland Harbor cleanup |  | 1,800,000,000 |  |  |  |  |
Remediation cost estimate lower range |  | 3,000,000 |  | 3,000,000 |  |  |
Remediation cost estimate upper range |  |  |  | 8,000,000 |  |  |
Loss Contingency, Estimate of Possible Loss |  | 3,000,000 |  |  |  |  |
Regulatory asset for recovery of loss contingencies |  | 3,000,000 |  |  |  |  |
Civil Penalty Claim - Per day per violation through January 12, 2009 |  | 32,500 |  |  |  |  |
Civil Penalty Claim - Per day per violation after January 12, 2009 |  | 37,500 |  |  |  |  |
projects added to plaintiff's suit | 2 |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  | 13 |  | 40 |  |  |
Potential Income Tax Liability related to State Tax Court Ruling |  | $ 7,000,000 |  |  |  |  |

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- Definition The portion of the Company's remaining investment in its Trojan plant that the OPUC allowed the Company to recover. + References No definition available. + Details
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- Definition Lower end estimate of the range of cost of Portland Harbor cleanup, in total. This represents the cost to all parties, not PGE portion. + References No definition available. + Details
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