|
Business Segments (Net Loss) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | $ 888 | $ 942 | $ 2,356 | $ 1,890 | ||||||
|
Other [Member]
|
||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | (92) | [1] | (64) | [1] | (269) | [1] | (278) | [1] | ||
|
Duke Energy Carolinas [Member] | Other [Member]
|
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | (19) | (26) | (67) | (69) | ||||||
|
Progress Energy [Member]
|
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | 329 | 327 | 739 | 467 | ||||||
|
Progress Energy [Member] | Other [Member]
|
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | (48) | (72) | (145) | (205) | ||||||
|
Duke Energy Progress [Member] | Other [Member]
|
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | (10) | (20) | (23) | (40) | ||||||
|
Duke Energy Florida [Member] | Other [Member]
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | (5) | (6) | (16) | (18) | ||||||
|
Duke Energy Indiana [Member] | Other [Member]
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| Segment Reporting Information [Line Items] | ||||||||||
| Segment income | $ (3) | $ (5) | $ (10) | $ (13) | ||||||
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