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Debt And Credit Facilities (Tables)
9 Months Ended
Sep. 30, 2012
Schedule Of Line Of Credit Facilities
    September 30, 2012
(in millions) Duke Energy (Parent) Duke Energy Carolinas Progress Energy Carolinas Progress Energy Florida  Duke Energy Ohio Duke Energy IndianaTotal Duke Energy
Facility Size $ 1,750 $ 1,250 $ 750 $ 750 $ 750 $ 750 $ 6,000
 Notes Payable and Commercial Paper   (57)   (300)   (134)   (121)     (150)   (762)
 Outstanding Letters of Credit   (51)   (7)   (2)   (1)       (61)
 Tax-Exempt Bonds     (95)       (84)   (81)   (260)
Available Capacity $ 1,642 $ 848 $ 614 $ 628 $ 666 $ 519 $ 4,917
Schedule Of Money Pool Balances
 September 30, 2012 December 31, 2011
(in millions)Notes receivable from affiliated companies Notes payable to affiliated companies Long-term debt payable to affiliated companies Notes receivable from affiliated companies Notes payable to affiliated companies Long-term debt payable to affiliated companies
Duke Energy Carolinas$ 811 $ $ 300 $ 923 $ $ 300
Duke Energy Ohio  84   2     311    
Duke Energy Indiana    55   150     300   150