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Derivatives and Hedging (Undesignated Contracts - Location and Amount of Pretax Gains and (Losses) Recognized in Income or As Regulatory Assets or Liabilities) (Details) (Not Designated as Hedging Instrument [Member], USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
9 Months Ended |
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings |
$ (278) |
$ (78) |
$ (807) |
$ (195) |
| Pretax gains (losses) recognized as regulatory assets or liabilities |
(15) |
(11) |
27 |
27 |
|
Commodity Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
3 |
(29) |
2 |
(34) |
|
Commodity Contracts [Member] | Regulatory Liability [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
1 |
6 |
|
10 |
|
Commodity Contracts [Member] | Revenue Regulated Electric [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
|
3 |
|
10 |
|
Commodity Contracts [Member] | Revenue Non Regulated Electric Natural Gas And Other [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
|
(7) |
|
(7) |
|
Commodity Contracts [Member] | Fuel Used In Electric Generation And Purchased Power Regulated [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
32 |
(68) |
18 |
(157) |
|
Commodity Contracts [Member] | Fuel Used In Electric Generation And Purchased Power Non Regulated [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
|
(2) |
|
|
|
Commodity Contracts [Member] | Income (loss) from Discontinued Operations [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
(319) |
|
(825) |
(28) |
|
Interest Rate Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
(7) |
12 |
9 |
51 |
|
Interest Rate Contracts [Member] | Regulatory Liability [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
(12) |
|
16 |
|
|
Interest Rate Contracts [Member] | Interest Expense [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
9 |
(4) |
|
(13) |
|
Progress Energy [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings |
33 |
(69) |
18 |
(160) |
| Pretax gains (losses) recognized as regulatory assets or liabilities |
3 |
(27) |
19 |
(21) |
|
Progress Energy [Member] | Commodity Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
3 |
(31) |
19 |
(34) |
|
Progress Energy [Member] | Commodity Contracts [Member] | Revenue Regulated Electric [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
1 |
3 |
|
10 |
|
Progress Energy [Member] | Commodity Contracts [Member] | Fuel Used In Electric Generation And Purchased Power Regulated [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
32 |
(68) |
18 |
(157) |
|
Progress Energy [Member] | Interest Rate Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
4 |
|
13 |
|
Progress Energy [Member] | Interest Rate Contracts [Member] | Interest Expense [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - interest |
|
(4) |
|
(13) |
|
Duke Energy Progress [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings |
14 |
(24) |
4 |
(52) |
| Pretax gains (losses) recognized as regulatory assets or liabilities |
(19) |
(8) |
21 |
(8) |
|
Duke Energy Progress [Member] | Commodity Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
(19) |
(11) |
21 |
(18) |
|
Duke Energy Progress [Member] | Commodity Contracts [Member] | Revenue Regulated Electric [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
1 |
3 |
|
10 |
|
Duke Energy Progress [Member] | Commodity Contracts [Member] | Fuel Used In Electric Generation And Purchased Power Regulated [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
13 |
(24) |
4 |
(53) |
|
Duke Energy Progress [Member] | Interest Rate Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
3 |
|
10 |
|
Duke Energy Progress [Member] | Interest Rate Contracts [Member] | Interest Expense [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - interest |
|
(3) |
|
(9) |
|
Duke Energy Florida [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings |
20 |
(46) |
14 |
(108) |
| Pretax gains (losses) recognized as regulatory assets or liabilities |
22 |
(18) |
(2) |
(13) |
|
Duke Energy Florida [Member] | Commodity Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
22 |
(19) |
(2) |
(16) |
|
Duke Energy Florida [Member] | Commodity Contracts [Member] | Fuel Used In Electric Generation And Purchased Power Regulated [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
20 |
(45) |
14 |
(105) |
|
Duke Energy Florida [Member] | Interest Rate Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
1 |
|
3 |
|
Duke Energy Florida [Member] | Interest Rate Contracts [Member] | Interest Expense [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - interest |
|
(1) |
|
(3) |
|
Duke Energy Ohio [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings |
(303) |
3 |
(888) |
(29) |
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
|
5 |
3 |
|
Duke Energy Ohio [Member] | Commodity Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
|
(1) |
|
|
Duke Energy Ohio [Member] | Commodity Contracts [Member] | Income (loss) from Discontinued Operations [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - commodities |
(303) |
3 |
(887) |
(28) |
|
Duke Energy Ohio [Member] | Interest Rate Contracts [Member] | Regulatory Asset [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
|
|
3 |
|
Duke Energy Ohio [Member] | Interest Rate Contracts [Member] | Regulatory Liability [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized as regulatory assets or liabilities |
|
|
6 |
|
|
Duke Energy Ohio [Member] | Interest Rate Contracts [Member] | Interest Expense [Member]
|
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Pretax gains (losses) recognized in earnings - interest |
|
|
$ (1) |
$ (1) |