Quarterly Financial Data (Unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | $ 5,322 | $ 6,483 | $ 5,589 | $ 6,065 | $ 5,559 | $ 6,395 | $ 5,708 | $ 6,263 | $ 23,459 | $ 23,925 | $ 22,756 |
Operating income (loss) | 977 | 1,688 | 1,246 | 1,456 | 988 | 1,619 | 1,289 | 1,362 | 5,367 | 5,258 | 4,854 |
Income (loss) from continuing operations | 491 | 940 | 604 | 776 | 98 | 891 | 726 | 750 | 2,811 | 2,465 | 2,590 |
Income (Loss) From Discontinued Operations, net of tax | (9) | (5) | (57) | 91 | 2 | 378 | (113) | (843) | 20 | (576) | 86 |
Net income (loss) | 482 | 935 | 547 | 867 | 100 | 1,269 | 613 | (93) | 2,831 | 1,889 | 2,676 |
Net income (loss) attributable to Parent | $ 477 | $ 932 | $ 543 | $ 864 | $ 97 | $ 1,274 | $ 609 | $ (97) | $ 2,816 | $ 1,883 | $ 2,665 |
Income (loss) from continuing operations attributable to Duke Energy Corporation common shareholders [Abstract] | |||||||||||
Basic | $ 0.70 | $ 1.36 | $ 0.87 | $ 1.09 | $ 0.14 | $ 1.25 | $ 1.02 | $ 1.05 | $ 4.02 | $ 3.46 | $ 3.64 |
Diluted | 0.70 | 1.36 | 0.87 | 1.09 | 0.14 | 1.25 | 1.02 | 1.05 | 4.02 | 3.46 | 3.63 |
Income (loss) from discontinued operations attributable To Duke Energy Corporation common shareholders [Abstract] | |||||||||||
Basic | (0.01) | (0.01) | (0.09) | 0.13 | 0.55 | (0.16) | (1.19) | 0.03 | (0.80) | 0.13 | |
Diluted | (0.01) | (0.01) | (0.09) | 0.13 | 0.55 | (0.16) | (1.19) | 0.03 | (0.80) | 0.13 | |
Net income attributable to Duke Energy Corporation common shareholders [Abstract] | |||||||||||
Basic | 0.69 | 1.35 | 0.78 | 1.22 | 0.14 | 1.80 | 0.86 | (0.14) | 4.05 | 2.66 | 3.77 |
Diluted | $ 0.69 | $ 1.35 | $ 0.78 | $ 1.22 | $ 0.14 | $ 1.80 | $ 0.86 | $ (0.14) | $ 4.05 | $ 2.66 | $ 3.76 |
Duke Energy Carolinas [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | $ 1,560 | $ 2,061 | $ 1,707 | $ 1,901 | $ 1,658 | $ 1,938 | $ 1,755 | $ 2,000 | $ 7,229 | $ 7,351 | $ 6,954 |
Operating income (loss) | 296 | 666 | 483 | 515 | 318 | 630 | 438 | 509 | 1,960 | 1,895 | 1,809 |
Net income (loss) | 141 | 383 | 265 | 292 | 139 | 377 | 270 | 286 | 1,081 | 1,072 | |
Net income (loss) attributable to Parent | 1,081 | 1,072 | 976 | ||||||||
Progress Energy [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | 2,336 | 2,929 | 2,476 | 2,536 | 2,341 | 2,863 | 2,421 | 2,541 | 10,277 | 10,166 | 9,533 |
Operating income (loss) | 351 | 756 | 504 | 549 | 388 | 665 | 488 | 477 | 2,160 | 2,018 | 1,618 |
Income (loss) from continuing operations | 132 | 452 | 217 | 264 | 139 | 330 | 207 | 204 | 1,065 | 880 | 659 |
Income (Loss) From Discontinued Operations, net of tax | (3) | (6) | 16 | ||||||||
Net income (loss) | 131 | 451 | 217 | 263 | 139 | 330 | 202 | 203 | 1,062 | 874 | 675 |
Net income (loss) attributable to Parent | 128 | 448 | 215 | 260 | 136 | 329 | 202 | 202 | 1,051 | 869 | 672 |
Duke Energy Progress [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | 1,160 | 1,488 | 1,193 | 1,449 | 1,196 | 1,367 | 1,191 | 1,422 | 5,290 | 5,176 | 4,992 |
Operating income (loss) | 130 | 394 | 184 | 316 | 180 | 285 | 212 | 258 | 1,024 | 935 | 932 |
Net income (loss) | 69 | 229 | 85 | 183 | 76 | 157 | 101 | 133 | 566 | 467 | 500 |
Net income (loss) attributable to Parent | 566 | 467 | 500 | ||||||||
Duke Energy Florida [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | 1,174 | 1,436 | 1,281 | 1,086 | 1,143 | 1,491 | 1,225 | 1,116 | 4,977 | 4,975 | 4,527 |
Operating income (loss) | 216 | 357 | 315 | 227 | 205 | 378 | 276 | 219 | 1,115 | 1,078 | 688 |
Net income (loss) | 105 | 216 | 165 | 113 | 93 | 205 | 142 | 108 | 599 | 548 | 325 |
Net income (loss) attributable to Parent | 599 | 548 | 325 | ||||||||
Duke Energy Ohio [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | 452 | 462 | 405 | 586 | 480 | 446 | 412 | 575 | 1,905 | 1,913 | 1,805 |
Operating income (loss) | 73 | 76 | 43 | 111 | 76 | 58 | 60 | (7) | 303 | 187 | 182 |
Income (loss) from continuing operations | 149 | 68 | 67 | ||||||||
Income (Loss) From Discontinued Operations, net of tax | (2) | (65) | 90 | 34 | 413 | (135) | (875) | 23 | (563) | 35 | |
Net income (loss) | 43 | 32 | (52) | 149 | 63 | 439 | (107) | (890) | 172 | (495) | 102 |
Net income (loss) attributable to Parent | 172 | (495) | 102 | ||||||||
Duke Energy Indiana [Member] | |||||||||||
Quarterly Financial Information Disclosure [Line Items] | |||||||||||
Operating revenues | 667 | 749 | 686 | 788 | 792 | 790 | 748 | 845 | 2,890 | 3,175 | 2,926 |
Operating income (loss) | 171 | 117 | 146 | 210 | 130 | 182 | 178 | 215 | 644 | 705 | 733 |
Net income (loss) | $ 94 | $ 46 | $ 68 | $ 108 | $ 58 | $ 101 | $ 87 | $ 113 | 316 | 359 | |
Net income (loss) attributable to Parent | $ 316 | $ 359 | $ 358 |