v2.4.0.8
Condensed Consolidated Statements of Changes in Equity (USD $)
In Millions, except Share data, unless otherwise specified
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]
Common Stock [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 Florida [Member]
Duke Energy Florida [Member]
Common Stock [Member]
Duke Energy Florida [Member]
Retained Earnings [Member]
Duke Energy Florida [Member]
Net Gains (Losses) on Cash Flow Hedges [Member]
Duke Energy Florida [Member]
Pension and OPEB Related Adjustments [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 Ohio [Member]
Pension and OPEB Related Adjustments [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]
Beginning member's equity at Dec. 31, 2012                     $ 9,872 $ 9,888 $ (15) $ (1)                                                      
Balance at Dec. 31, 2012 40,941 1 39,279 1,889 (116) (100)    (90) 40,863 78         10,185    7,465 2,783 (42)   (25) 10,181 4 5,127 2,159 2,968 4,799 1,762 3,037      5,166 762 4,882 (477) (1) 3,708 1 1,384 2,318 5
Balance, in shares at Dec. 31, 2012   704,000,000                                                                              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                                  
Net income (loss) 1,984     1,977         1,977           479     477       477 2                                        
Net Income (Loss) Attributable to Noncontrolling Interest 7                           2                                                    
Net Income (Loss) Attributable to Parent 1,977                   767 767       477                 362   362 250   250     96     96   276     276  
Other comprehensive income (loss), net of tax (78)       (133) 56 (2) 5 (74) (4) 1   1   8       3   5 8         (1)       (1) 1        1 (2)          (2)
Common stock issuances, including dividend reinvestment and employee benefits 38   38           38                                                                
Common stock issuances, including dividend reinvestment and employee benefits, shares   2,000,000                                                                              
Common stock dividends (1,636)     (1,636)         (1,636)                                   (225)   (225)               (125)     (125)  
Distributions to parent                     (500) (500)                                                          
Premium on the redemption of preferred stock of subsidiaries (3)     (3)         (3)           (3)     (3)       (3)   (2)    (2) (1)   (1)                        
Changes in noncontrolling interest in subsidiaries (9)                 (9)                                                              
Distributions to noncontrolling interest in subsidiaries                             (2)               (2)                                    
Ending member's equity at Sep. 30, 2013                     10,140 10,155 (14) (1)                                                      
Balance at Sep. 30, 2013 41,237 1 39,317 2,227 (249) (44) (2) (85) 41,165 72         10,667    7,465 3,257 (39)   (20) 10,663 4 5,487 2,159 3,328 4,822 1,762 3,061    (1) 5,263 762 4,882 (381)    3,857 1 1,384 2,469 3
Balance, in shares at Sep. 30, 2013   706,000,000                                                                              
Beginning member's equity at Jun. 30, 2013                                                                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                                  
Net income (loss) 1,008                           342                                                    
Net Income (Loss) Attributable to Noncontrolling Interest 4                           1                                                    
Net Income (Loss) Attributable to Parent 1,004                   342       341                 175     197         59         104        
Other comprehensive income (loss), net of tax (4)                           4                       (1)                            
Ending member's equity at Sep. 30, 2013                     10,140                                                            
Balance at Sep. 30, 2013 41,237                           10,667    7,465             5,487     4,822 1,762        5,263 762 4,882     3,857        
Beginning member's equity at Dec. 31, 2013                     10,350 10,365 (14) (1)                                                      
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 706,000,000 706,000,000                         100                 160,000,000     100         89,663,086         53,913,701        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                                  
Net income (loss) 1,789     1,786         1,786           735     733       733 2                                        
Net Income (Loss) Attributable to Noncontrolling Interest 3                 3         2                                                    
Net Income (Loss) Attributable to Parent 1,786                   933 933       733                 391   391 455         (558)     (558)   301     301  
Other comprehensive income (loss), 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 23   23           23                                                                
Common stock issuances, including dividend reinvestment and employee benefits, shares   1,000,000                                                                              
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)                                      
Ending member's equity at Sep. 30, 2014                     10,909 10,922 (12) (1)                                                      
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 707,000,000 707,000,000                         100                 160,000,000     100         89,663,086         53,913,701        
Beginning member's equity at Jun. 30, 2014                                                                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                                                  
Net income (loss) 1,269                           330                                                    
Net Income (Loss) Attributable to Noncontrolling Interest (5)                           1                                                    
Net Income (Loss) Attributable to Parent 1,274                   377       329                 157     205         439         101        
Other comprehensive income (loss), net of tax (97)                           3                       0                            
Ending member's equity at Sep. 30, 2014                     10,909                                                            
Balance at Sep. 30, 2014 $ 41,453                           $ 11,032    $ 7,467             $ 5,792     $ 5,129 $ 1,762       $ 4,611 $ 762        $ 3,789        
Balance, in shares at Sep. 30, 2014 707,000,000                           100                 160,000,000     100         89,663,086         53,913,701