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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Allowance for doubtful accounts - receivables | $ 17 | $ 14
Regulatory assets, current | 1,906 | 1,437
Other, current assets | 1,092 | 634
Regulatory assets, noncurrent | 12,616 | 12,442
Current maturities of long-term debt | 3,455 | 3,244
Long-Term Debt | $ 50,507 | $ 49,035
Common stock, par value | $ 0.001 | $ 0.001
Common stock, shares authorized | 2,000,000,000 | 2,000,000,000
Common stock, shares outstanding | 713,000,000 | 700,000,000
Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | $ 55 | $ 54
Regulatory assets, current | 52 | 51
Regulatory assets, noncurrent | 1,055 | 1,091
Current maturities of long-term debt | 228 | 225
Long-Term Debt | 4,015 | 4,306
Duke Energy Carolinas [Member] |  |
Allowance for doubtful accounts - receivables | 2 | 2
Regulatory assets, current | 435 | 299
Other, current assets | 55 | 19
Regulatory assets, noncurrent | 3,188 | 2,853
Current maturities of long-term debt | 506 | 1,205
Long-Term Debt | 9,589 | 8,598
Duke Energy Carolinas [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 7 | 7
Progress Energy [Member] |  |
Allowance for doubtful accounts - receivables | 5 | 4
Regulatory assets, current | 1,122 | 741
Other, current assets | 256 | 334
Regulatory assets, noncurrent | 5,987 | 6,010
Current maturities of long-term debt | 1,322 | 771
Long-Term Debt | $ 17,440 | $ 16,916
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 100 | 100
Common stock, shares outstanding | 100 | 100
Progress Energy [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | $ 8 | $ 7
Regulatory assets, current | 52 | 51
Regulatory assets, noncurrent | 1,055 | 1,091
Current maturities of long-term debt | 53 | 53
Long-Term Debt | 1,636 | 1,689
Duke Energy Progress [Member] |  |
Allowance for doubtful accounts - receivables | 2 | 1
Regulatory assets, current | 677 | 352
Other, current assets | 112 | 97
Regulatory assets, noncurrent | 3,822 | 3,507
Current maturities of long-term debt | 603 | 3
Long-Term Debt | 7,401 | 7,204
Duke Energy Progress [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 5 | 5
Duke Energy Florida [Member] |  |
Allowance for doubtful accounts - receivables | 3 | 3
Regulatory assets, current | 445 | 389
Other, current assets | 27 | 86
Regulatory assets, noncurrent | 2,165 | 2,503
Current maturities of long-term debt | 269 | 768
Long-Term Debt | 7,102 | 6,327
Duke Energy Florida [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 3 | 2
Regulatory assets, current | 52 | 51
Other, current assets | 14 | 40
Regulatory assets, noncurrent | 1,055 | 1,091
Current maturities of long-term debt | 53 | 53
Long-Term Debt | 1,336 | 1,389
Duke Energy Ohio [Member] |  |
Allowance for doubtful accounts - receivables | 3 | 3
Regulatory assets, current | 41 | 49
Other, current assets | 28 | 39
Regulatory assets, noncurrent | 427 | 445
Current maturities of long-term debt | 452 | 3
Long-Term Debt | $ 1,589 | $ 2,039
Common stock, par value | $ 8.50 | $ 8.50
Common stock, shares authorized | 120,000,000 | 120,000,000
Common stock, shares outstanding | 90,000,000 | 90,000,000
Duke Energy Indiana [Member] |  |
Allowance for doubtful accounts - receivables | $ 2 | $ 2
Regulatory assets, current | 190 | 165
Other, current assets | 64 | 30
Regulatory assets, noncurrent | 950 | 978
Current maturities of long-term debt | 62 | 3
Long-Term Debt | 3,571 | 3,630
Piedmont Natural Gas [Member] |  |
Allowance for doubtful accounts - receivables | 1 | 2
Regulatory assets, current | 38 | 95
Other, current assets | 48 | 52
Regulatory assets, noncurrent | 305 | 283
Current maturities of long-term debt | 350 | 250
Long-Term Debt | $ 1,788 | $ 1,787
Common stock, shares authorized | 100 | 100
Common stock, shares outstanding | 100 | 100

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