1.0.0.3 false Merger Termination and Strategic Alternatives Costs false 1 $ false false shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 usd Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 usdPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 NOTES TO FINANCIAL STATEMENTS 0 ceg_NotesToFinancialStatementsAbstract ceg false na duration string Notes To Financial Statements [Abstract] false false false false false true false false false 1 false false 0 0 false false Notes To Financial Statements [Abstract] false 3 Merger Termination and Strategic Alternatives Costs 1 ceg_MergerAndStrategicAlternativeCostsTextBlock ceg false na duration string Description of costs related to the pending merger with MidAmerican Energy Holdings Company and our pursuit of other... false false false false false false false false false 1 false false 0 0 <table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> Merger Termination and Strategic Alternatives Costs We incurred costs during the quarter ended September 30, 2009 primarily related to the transactions related to EDF, and other strategic alternatives costs. For the nine months ended September 30, 2009, we incurred costs related to the terminated merger agreement with MidAmerican Energy Holdings Company (MidAmerican), the conversion of our Series A Preferred Stock, the transactions related to EDF, and other strategic alternatives costs. These costs totaled $4.9 million pre-tax and $51.2 million pre-tax for the quarter and nine months ended September 30, 2009, respectively, and primarily relate to the first quarter of 2009 write-off of the unamortized debt discount associated with the 14% Senior Notes (Senior Notes) that were repaid in full to MidAmerican in January 2009.</td></tr></table> Merger Termination and Strategic Alternatives Costs We incurred costs during the quarter ended September 30, 2009 primarily related to the transactions false false Description of costs related to the pending merger with MidAmerican Energy Holdings Company and our pursuit of other strategic alternatives to that merger. No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true