v2.4.0.8

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 | 9 Months Ended |
--- | --- | ---
Sep. 30, 2014 MW | Dec. 31, 2013
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 2,297 |  |
Remaining net book value (in millions) | $ 69,595 |  | $ 69,490
Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | 256 | [1] |
Duke Energy Carolinas [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 200 | [2] |
Remaining net book value (in millions) | 25,126 |  | 23,012
Duke Energy Carolinas [Member] | Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | 19 | [1],[2] |
Progress Energy [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 873 |  |
Remaining net book value (in millions) | 24,399 |  | 23,382
Progress Energy [Member] | Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | 109 | [1] |
Duke Energy Florida [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 873 | [3] |
Remaining net book value (in millions) | 9,815 |  | 9,611
Duke Energy Florida [Member] | Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | 109 | [1],[3] |
Duke Energy Ohio [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 556 | [4] |
Remaining net book value (in millions) | 4,905 |  | 8,235
Duke Energy Ohio [Member] | Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | 9 | [1],[4] |
Duke Energy Indiana [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | 668 | [5] |
Remaining net book value (in millions) | 8,780 |  | 8,576
Duke Energy Indiana [Member] | Generation Facilities To Be Retired [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Remaining net book value (in millions) | $ 119 | [1],[5] |
[1] | Included in Property, plant and equipment, net as of September 30, 2014, on the Condensed Consolidated Balance Sheets.
[2] | Includes Lee Units 1 and 2. Excludes 170 MW Lee Unit 3 that is expected to be converted to gas in 2014. Duke Energy Carolinas expects to retire or convert these units by December 2020 in conjunction with a settlement agreement associated with the Cliffside Unit 6 air permit.
[3] | Includes Crystal River Units 1 and 2.
[4] | Includes Beckjord Units 5 and 6 and Miami Fort Unit 6. Beckjord units have no remaining book value and were retired October 1, 2014.
[5] | Includes Wabash River Units 2 through 6. Wabash River Unit 6 is being evaluated for potential conversion to gas. Duke Energy Indiana committed to retire or convert these units by June 2018 in conjunction with a settlement agreement associated with the Edwardsport air permit.

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