v2.4.0.6

Regulatory Matters (Schedule Of Net Carrying Value Of Facilities As Well As The Remaining Non-current Regulatory Assets) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 MW | Dec. 31, 2012
Megawatt of potential plants to be retired | 3,954 |  |
Remaining net book value of potential plants to be retired | $ 415 | [1] |
Generation Facilities To Be Retired Net | 130 |  | 136
Duke Energy Carolinas [Member] |  |  |
Megawatt of potential plants to be retired | 910 | [2] |
Remaining net book value of potential plants to be retired | 98 | [1],[2],[3] |
Generation Facilities To Be Retired Net | 68 |  | 73
Retired MW | 587 |  |
Megawatts committed to be retired | 1,667 |  |
Progress Energy [Member] |  |  |
Megawatt of potential plants to be retired | 1,448 |  |
Remaining net book value of potential plants to be retired | 175 | [1] |
Generation Facilities To Be Retired Net | 62 |  | 63
Duke Energy Progress [Member] |  |  |
Megawatt of potential plants to be retired | 575 | [4] |
Remaining net book value of potential plants to be retired | 62 | [1],[3],[4] |
Generation Facilities To Be Retired Net | 62 |  | 63
Duke Energy Florida [Member] |  |  |
Megawatt of potential plants to be retired | 873 | [5] |
Remaining net book value of potential plants to be retired | 113 | [1],[5] |
Duke Energy Ohio [Member] |  |  |
Megawatt of potential plants to be retired | 928 | [6] |
Remaining net book value of potential plants to be retired | 12 | [1],[6] |
Duke Energy Indiana [Member] |  |  |
Megawatt of potential plants to be retired | 668 | [7] |
Remaining net book value of potential plants to be retired | $ 130 | [1],[7] |
[1] | Included in Property, plant and equipment, net as of March 31, 2013, on the Condensed Consolidated Balance Sheets, unless otherwise noted.
[2] | Includes Riverbend Units 4 through 7, Lee Units 1 and 2 and Buck Units 5 and 6. Duke Energy Carolinas has committed to retire 1,667 MW in conjunction with a Cliffside air permit settlement, of which 587 MW have already been retired as of March 31, 2013. Duke Energy Carolinas retired 710 MW for Riverbend Units 4 through 7 and Buck Units 5 and 6 on April 1, 2013. Excludes 170 MW Lee Unit 3 that is expected to be converted to gas in 2014. The Lee Unit 3 conversion will be considered a retirement toward meeting the 1,667 MW retirement commitment.
[3] | Net book value of Duke Energy Carolinas' Buck Units 5 and 6 of $68 million, and Duke Energy Progress' Sutton Station of $62 million is included in Generation facilities to be retired, net, on the Condensed Consolidated Balance Sheets at March 31, 2013.
[4] | Includes Sutton Station, which is expected to be retired by the end of 2013.
[5] | Includes Crystal River Units 1 and 2.
[6] | Includes Beckjord Station Units 2 through 6 and Miami Fort Unit 6. Beckjord has no remaining book value. Beckjord Unit 1 was retired May 1, 2012.
[7] | Includes Wabash River Units 2 through 6.

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