|
Fair Value Measurements (Fair Value Measurement Amounts for Assets and Liabilities) (Details) (USD $)
In Millions, unless otherwise specified
|
Sep. 30, 2014
|
Dec. 31, 2013
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
$ 85 |
$ 145 |
| Assets, fair value disclosure |
5,839 |
5,712 |
| Derivative liabilities |
(428) |
(321) |
| Net assets, fair value |
5,411 |
5,391 |
|
Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
6 |
33 |
| Assets, fair value disclosure |
4,170 |
4,057 |
| Derivative liabilities |
(119) |
11 |
| Net assets, fair value |
4,051 |
4,068 |
|
Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
45 |
70 |
| Assets, fair value disclosure |
1,448 |
1,515 |
| Derivative liabilities |
(253) |
(303) |
| Net assets, fair value |
1,195 |
1,212 |
|
Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
34 |
42 |
| Assets, fair value disclosure |
221 |
140 |
| Derivative liabilities |
(56) |
(29) |
| Net assets, fair value |
165 |
111 |
|
Equity Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
3,824 |
3,579 |
|
Equity Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
3,649 |
3,495 |
|
Equity Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
3 |
57 |
|
Equity Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
172 |
27 |
|
Equity Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
96 |
102 |
|
Equity Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
96 |
91 |
|
Equity Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
11 |
|
Equity Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Debt Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,550 |
1,553 |
|
Debt Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
388 |
402 |
|
Debt Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,162 |
1,100 |
|
Debt Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
51 |
|
Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
284 |
333 |
|
Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
31 |
36 |
|
Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
238 |
277 |
|
Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
15 |
20 |
|
Duke Energy Carolinas [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Assets, fair value disclosure |
|
2,837 |
| Derivative liabilities |
|
(2) |
| Net assets, fair value |
2,972 |
2,835 |
|
Duke Energy Carolinas [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Assets, fair value disclosure |
|
2,047 |
| Derivative liabilities |
|
|
| Net assets, fair value |
2,099 |
2,047 |
|
Duke Energy Carolinas [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Assets, fair value disclosure |
|
709 |
| Derivative liabilities |
|
|
| Net assets, fair value |
698 |
709 |
|
Duke Energy Carolinas [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Assets, fair value disclosure |
|
81 |
| Derivative liabilities |
|
(2) |
| Net assets, fair value |
175 |
79 |
|
Duke Energy Carolinas [Member] | Equity Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
2,124 |
1,964 |
|
Duke Energy Carolinas [Member] | Equity Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,949 |
1,879 |
|
Duke Energy Carolinas [Member] | Equity Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
3 |
58 |
|
Duke Energy Carolinas [Member] | Equity Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
172 |
27 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
845 |
870 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
150 |
168 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
695 |
651 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
51 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
3 |
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Carolinas [Member] | Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
3 |
3 |
|
Progress Energy [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
3 |
| Assets, fair value disclosure |
2,463 |
2,353 |
| Derivative liabilities |
(142) |
(187) |
| Net assets, fair value |
2,321 |
2,166 |
|
Progress Energy [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
1,953 |
1,867 |
| Derivative liabilities |
|
|
| Net assets, fair value |
1,953 |
1,867 |
|
Progress Energy [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
3 |
| Assets, fair value disclosure |
510 |
486 |
| Derivative liabilities |
(142) |
(187) |
| Net assets, fair value |
368 |
299 |
|
Progress Energy [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
|
|
| Derivative liabilities |
|
|
| Net assets, fair value |
|
|
|
Progress Energy [Member] | Equity Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,700 |
1,615 |
|
Progress Energy [Member] | Equity Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,700 |
1,615 |
|
Progress Energy [Member] | Equity Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Progress Energy [Member] | Equity Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Progress Energy [Member] | Debt Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
705 |
677 |
|
Progress Energy [Member] | Debt Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
238 |
233 |
|
Progress Energy [Member] | Debt Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
467 |
444 |
|
Progress Energy [Member] | Debt Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Progress Energy [Member] | Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
58 |
58 |
|
Progress Energy [Member] | Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
15 |
19 |
|
Progress Energy [Member] | Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
43 |
39 |
|
Progress Energy [Member] | Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Progress [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
1 |
| Assets, fair value disclosure |
1,625 |
1,543 |
| Derivative liabilities |
(45) |
(66) |
| Net assets, fair value |
1,580 |
1,477 |
|
Duke Energy Progress [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
1,283 |
1,209 |
| Derivative liabilities |
|
|
| Net assets, fair value |
1,283 |
1,209 |
|
Duke Energy Progress [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
1 |
| Assets, fair value disclosure |
342 |
334 |
| Derivative liabilities |
(45) |
(66) |
| Net assets, fair value |
297 |
268 |
|
Duke Energy Progress [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
|
|
| Derivative liabilities |
|
|
| Net assets, fair value |
|
|
|
Duke Energy Progress [Member] | Equity Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,126 |
1,069 |
|
Duke Energy Progress [Member] | Equity Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
1,126 |
1,069 |
|
Duke Energy Progress [Member] | Equity Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Progress [Member] | Equity Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Progress [Member] | Debt Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
497 |
470 |
|
Duke Energy Progress [Member] | Debt Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
155 |
137 |
|
Duke Energy Progress [Member] | Debt Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
342 |
333 |
|
Duke Energy Progress [Member] | Debt Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Progress [Member] | Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
2 |
3 |
|
Duke Energy Progress [Member] | Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
2 |
3 |
|
Duke Energy Progress [Member] | Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Progress [Member] | Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Florida [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
3 |
1 |
| Assets, fair value disclosure |
828 |
801 |
| Derivative liabilities |
(97) |
(116) |
| Net assets, fair value |
731 |
685 |
|
Duke Energy Florida [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
657 |
644 |
| Derivative liabilities |
|
|
| Net assets, fair value |
657 |
644 |
|
Duke Energy Florida [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
3 |
1 |
| Assets, fair value disclosure |
171 |
157 |
| Derivative liabilities |
(97) |
(116) |
| Net assets, fair value |
74 |
41 |
|
Duke Energy Florida [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Assets, fair value disclosure |
|
|
| Derivative liabilities |
|
|
| Net assets, fair value |
|
|
|
Duke Energy Florida [Member] | Equity Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
574 |
546 |
|
Duke Energy Florida [Member] | Equity Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
574 |
546 |
|
Duke Energy Florida [Member] | Equity Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Florida [Member] | Equity Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Florida [Member] | Debt Securities [Member] | Ndtf [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
208 |
214 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Ndtf [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
83 |
96 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Ndtf [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
125 |
118 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Ndtf [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Florida [Member] | Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
43 |
40 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
2 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
43 |
38 |
|
Duke Energy Florida [Member] | Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Investments |
|
|
|
Duke Energy Ohio [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
7 |
96 |
| Derivative liabilities |
(221) |
(95) |
| Net assets, fair value |
(214) |
1 |
|
Duke Energy Ohio [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
50 |
| Derivative liabilities |
(114) |
(1) |
| Net assets, fair value |
(114) |
49 |
|
Duke Energy Ohio [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
3 |
21 |
| Derivative liabilities |
(48) |
(65) |
| Net assets, fair value |
(45) |
(44) |
|
Duke Energy Ohio [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
4 |
25 |
| Derivative liabilities |
(59) |
(29) |
| Net assets, fair value |
(55) |
(4) |
|
Duke Energy Indiana [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
23 |
12 |
| Net assets, fair value |
122 |
106 |
|
Duke Energy Indiana [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
1 |
|
| Net assets, fair value |
70 |
65 |
|
Duke Energy Indiana [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
|
|
| Net assets, fair value |
30 |
29 |
|
Duke Energy Indiana [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Derivative assets |
22 |
12 |
| Net assets, fair value |
22 |
12 |
|
Duke Energy Indiana [Member] | Equity Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale equity securities |
69 |
65 |
|
Duke Energy Indiana [Member] | Equity Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale equity securities |
69 |
65 |
|
Duke Energy Indiana [Member] | Equity Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale equity securities |
|
|
|
Duke Energy Indiana [Member] | Equity Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale equity securities |
|
|
|
Duke Energy Indiana [Member] | Debt Securities [Member] | Other Classification [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale debt securities |
30 |
29 |
|
Duke Energy Indiana [Member] | Debt Securities [Member] | Other Classification [Member] | Level 1 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale debt securities |
|
|
|
Duke Energy Indiana [Member] | Debt Securities [Member] | Other Classification [Member] | Level 2 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale debt securities |
30 |
29 |
|
Duke Energy Indiana [Member] | Debt Securities [Member] | Other Classification [Member] | Level 3 [Member]
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
| Available-for-sale debt securities |
|
|