Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions |
Total |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Foreign Currency Translation Adjustments [Member] |
Net Gains (Losses) on Cash Flow Hedges [Member] |
Net Gains (Losses) on Available for Sale Securities [Member] |
Pension and OPEB Related Adjustments [Member] |
Common Stockholders' Equity [Member] |
Noncontrolling Interest [Member] |
Duke Energy Carolinas [Member] |
Duke Energy Carolinas [Member]
Members Equity [Member]
|
Duke Energy Carolinas [Member]
Net Gains (Losses) on Cash Flow Hedges [Member]
|
Duke Energy Carolinas [Member]
Net Gains (Losses) on Available for Sale Securities [Member]
|
Progress Energy [Member] |
Progress Energy [Member]
Additional Paid-in Capital [Member]
|
Progress Energy [Member]
Retained Earnings [Member]
|
Progress Energy [Member]
Net Gains (Losses) on Cash Flow Hedges [Member]
|
Progress Energy [Member]
Net Gains (Losses) on Available for Sale Securities [Member]
|
Progress Energy [Member]
Pension and OPEB Related Adjustments [Member]
|
Progress Energy [Member]
Common Stockholders' Equity [Member]
|
Progress Energy [Member]
Noncontrolling Interest [Member]
|
Duke Energy Progress [Member] |
Duke Energy Progress [Member]
Common Stock [Member]
|
Duke Energy Progress [Member]
Retained Earnings [Member]
|
Duke Energy Progress [Member]
Members Equity [Member]
|
Duke Energy Florida [Member] |
Duke Energy Florida [Member]
Common Stock [Member]
|
Duke Energy Florida [Member]
Retained Earnings [Member]
|
Duke Energy Florida [Member]
Members Equity [Member]
|
Duke Energy Florida [Member]
Net Gains (Losses) on Cash Flow Hedges [Member]
|
Duke Energy Ohio [Member] |
Duke Energy Ohio [Member]
Common Stock [Member]
|
Duke Energy Ohio [Member]
Additional Paid-in Capital [Member]
|
Duke Energy Ohio [Member]
Retained Earnings [Member]
|
Duke Energy Indiana [Member] |
Duke Energy Indiana [Member]
Common Stock [Member]
|
Duke Energy Indiana [Member]
Additional Paid-in Capital [Member]
|
Duke Energy Indiana [Member]
Retained Earnings [Member]
|
Duke Energy Indiana [Member]
Net Gains (Losses) on Cash Flow Hedges [Member]
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2013 | $ 41,408 | $ 1 | $ 39,365 | $ 2,363 | $ (307) | $ (40) | $ (52) | $ 41,330 | $ 78 | $ 10,864 | $ 7,467 | $ 3,452 | $ (43) | $ (16) | $ 10,860 | $ 4 | $ 5,625 | $ 2,159 | $ 3,466 | $ 4,797 | $ 1,762 | $ 3,036 | $ (1) | $ 5,269 | $ 762 | $ 4,882 | $ (375) | $ 3,939 | $ 1 | $ 1,384 | $ 2,551 | $ 3 | ||||||||
| Balance, in shares at Dec. 31, 2013 | 706,000,000 | |||||||||||||||||||||||||||||||||||||||
| Beginning member's equity at Dec. 31, 2013 | $ 10,350 | $ 10,365 | $ (14) | $ (1) | ||||||||||||||||||||||||||||||||||||
| Net income (loss) | 1,789 | 1,786 | 1,786 | 3 | 735 | 733 | 733 | 2 | ||||||||||||||||||||||||||||||||
| Net Income (Loss) Attributable to Parent | 1,786 | 933 | 933 | 733 | 391 | 391 | 455 | 455 | (558) | (558) | 301 | 301 | ||||||||||||||||||||||||||||
| Other comprehensive (loss) income, net of tax | (52) | (55) | (5) | $ 2 | 1 | (57) | 5 | 2 | 2 | 8 | 5 | $ 1 | 2 | 8 | 1 | $ 1 | ||||||||||||||||||||||||
| Common stock issuances, including dividend reinvestment and employee benefits, shares | 1,000,000 | |||||||||||||||||||||||||||||||||||||||
| Common stock issuances, including dividend reinvestment and employee benefits | 23 | 23 | 23 | |||||||||||||||||||||||||||||||||||||
| Common stock dividends | (1,670) | (1,670) | (1,670) | (224) | (224) | (124) | (124) | (100) | (100) | (451) | (451) | |||||||||||||||||||||||||||||
| Distributions to parent | (376) | (376) | ||||||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest in subsidiaries | (45) | (45) | (37) | (37) | ||||||||||||||||||||||||||||||||||||
| Transfer of service company net assets to Duke Energy | (538) | (538) | (538) | |||||||||||||||||||||||||||||||||||||
| Balance at Sep. 30, 2014 | 41,453 | $ 1 | 39,388 | 2,479 | (362) | (45) | 2 | (51) | 41,412 | 41 | 11,032 | 7,467 | 3,647 | (38) | 1 | (14) | 11,063 | (31) | 5,792 | 2,159 | 3,633 | 5,129 | 1,762 | 3,367 | 4,611 | 762 | 4,782 | (933) | 3,789 | 1 | 1,384 | 2,401 | 3 | |||||||
| Balance, in shares at Sep. 30, 2014 | 707,000,000 | |||||||||||||||||||||||||||||||||||||||
| Ending member's equity at Sep. 30, 2014 | 10,909 | 10,922 | (12) | (1) | ||||||||||||||||||||||||||||||||||||
| Balance at Dec. 31, 2014 | $ 40,899 | $ 1 | 39,405 | 2,012 | (439) | (59) | 3 | (48) | 40,875 | 24 | $ 11,176 | 7,467 | 3,782 | (35) | 1 | (7) | 11,208 | (32) | $ 5,867 | 2,159 | 3,708 | $ 5,222 | 1,762 | 3,460 | $ 4,674 | 762 | 4,782 | (870) | $ 3,848 | 1 | 1,384 | 2,460 | 3 | |||||||
| Balance, in shares at Dec. 31, 2014 | 707,000,000 | 707,000,000 | 100 | 160,000,000 | 100 | 89,663,086 | 53,913,701 | |||||||||||||||||||||||||||||||||
| Beginning member's equity at Dec. 31, 2014 | 10,924 | 10,937 | (12) | (1) | ||||||||||||||||||||||||||||||||||||
| Net income (loss) | $ 2,349 | 2,339 | 2,339 | 10 | $ 931 | 923 | 923 | 8 | ||||||||||||||||||||||||||||||||
| Net Income (Loss) Attributable to Parent | 2,339 | 940 | 940 | 923 | $ 497 | 355 | $ 142 | $ 494 | 351 | $ 143 | $ 129 | 129 | $ 222 | 222 | ||||||||||||||||||||||||||
| Other comprehensive (loss) income, net of tax | (245) | (228) | (1) | (5) | (1) | (235) | (10) | 2 | 1 | $ 1 | 0 | 2 | $ (1) | (1) | (2) | (2) | ||||||||||||||||||||||||
| Common stock issuances, including dividend reinvestment and employee benefits, shares | 1,000,000 | |||||||||||||||||||||||||||||||||||||||
| Common stock issuances, including dividend reinvestment and employee benefits | $ 48 | 48 | 48 | |||||||||||||||||||||||||||||||||||||
| Stock repurchase, Shares | (19,800,000) | (20,000,000) | ||||||||||||||||||||||||||||||||||||||
| Stock Repurchase | $ (1,500) | (1,500) | (1,500) | |||||||||||||||||||||||||||||||||||||
| Common stock dividends | (1,685) | (1,685) | (1,685) | (350) | (350) | (149) | (149) | (150) | (150) | |||||||||||||||||||||||||||||||
| Distributions to parent | (401) | (401) | (350) | (350) | ||||||||||||||||||||||||||||||||||||
| Distributions to noncontrolling interest in subsidiaries | (7) | (7) | (4) | (4) | ||||||||||||||||||||||||||||||||||||
| Other | 9 | (10) | (10) | 19 | 1 | (2) | (2) | 3 | $ (2,159) | $ (4,063) | 6,222 | $ (1,762) | $ (3,461) | 5,223 | ||||||||||||||||||||||||||
| Contributions from parent | 625 | 625 | 625 | 625 | 625 | |||||||||||||||||||||||||||||||||||
| Distribution of membership interest of Duke Energy SAM, LLC to parent | (1,912) | (1,912) | ||||||||||||||||||||||||||||||||||||||
| Balance at Sep. 30, 2015 | $ 39,868 | $ 1 | $ 37,953 | $ 2,656 | $ (667) | $ (60) | $ (2) | $ (49) | $ 39,832 | $ 36 | $ 12,729 | $ 8,092 | $ 4,703 | $ (33) | $ (8) | $ 12,754 | $ (25) | $ 2,742 | $ 762 | $ 2,721 | $ (741) | $ 3,918 | $ 1 | $ 1,384 | $ 2,532 | $ 1 | ||||||||||||||
| Balance, in shares at Sep. 30, 2015 | 688,000,000 | 688,000,000 | 100 | 89,663,086 | 53,913,701 | |||||||||||||||||||||||||||||||||||
| Ending member's equity at Sep. 30, 2015 | $ 11,465 | $ 11,476 | $ (11) | $ 6,989 | $ 6,989 | $ 5,016 | $ 5,016 |