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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Allowance for doubtful accounts - receivables | $ 16 | $ 16
Regulatory assets, current | 1,918 | 2,005
Other, current assets | 1,267 | 1,049
Regulatory assets, noncurrent | 13,393 | 13,617
Other, noncurrent assets | 2,975 | 2,935
Current maturities of long-term debt | 2,698 | 3,406
Long-Term Debt | $ 54,342 | $ 51,123
Common stock, par value (in usd per share) | $ 0.001 | $ 0.001
Common stock, shares authorized | 2,000,000,000 | 2,000,000,000
Common stock, shares outstanding | 728,000,000 | 727,000,000
Preferred stock, par value (in usd per share) | $ 0.001 |
Preferred stock, depositary shares authorized | 40,000,000 |
Preferred stock, depositary shares outstanding | 40,000,000 |
Other | $ 1,583 | $ 1,650
Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 55 | 55
Regulatory assets, current | 52 | 52
Other, current assets | 140 | 162
Regulatory assets, noncurrent | 1,019 | 1,041
Other, noncurrent assets | 289 | 261
Current maturities of long-term debt | 232 | 227
Long-Term Debt | 4,070 | 3,998
Other | 222 | 212
Duke Energy Carolinas [Member] |  |
Allowance for doubtful accounts - receivables | 2 | 2
Regulatory assets, current | 605 | 520
Other, current assets | 17 | 72
Regulatory assets, noncurrent | 3,392 | 3,457
Other, noncurrent assets | 1,085 | 1,027
Current maturities of long-term debt | 456 | 6
Long-Term Debt | 10,208 | 10,633
Other | 645 | 671
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 | 6 | 5
Regulatory assets, current | 1,024 | 1,137
Other, current assets | 107 | 125
Regulatory assets, noncurrent | 6,423 | 6,564
Other, noncurrent assets | 982 | 974
Current maturities of long-term debt | 1,026 | 1,672
Long-Term Debt | $ 18,023 | $ 17,089
Common stock, par value (in usd per share) | $ 0.01 | $ 0.01
Common stock, shares authorized | 100 | 100
Common stock, shares outstanding | 100 | 100
Other | $ 352 | $ 351
Progress Energy [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 8 | 8
Regulatory assets, current | 52 | 52
Other, current assets | 31 | 39
Regulatory assets, noncurrent | 1,019 | 1,041
Current maturities of long-term debt | 54 | 53
Long-Term Debt | 1,657 | 1,636
Duke Energy Progress [Member] |  |
Allowance for doubtful accounts - receivables | 2 | 2
Regulatory assets, current | 572 | 703
Other, current assets | 34 | 62
Regulatory assets, noncurrent | 4,124 | 4,111
Other, noncurrent assets | 586 | 612
Current maturities of long-term debt | 6 | 603
Long-Term Debt | 8,893 | 7,451
Other | 91 | 106
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 | 452 | 434
Other, current assets | 46 | 46
Regulatory assets, noncurrent | 2,299 | 2,454
Other, noncurrent assets | 311 | 311
Current maturities of long-term debt | 671 | 270
Long-Term Debt | 6,542 | 7,051
Other | 104 | 93
Duke Energy Florida [Member] | Variable Interest Entity [Member] |  |
Allowance for doubtful accounts - receivables of VIEs | 3 | 3
Regulatory assets, current | 52 | 52
Other, current assets | 31 | 39
Regulatory assets, noncurrent | 1,019 | 1,041
Current maturities of long-term debt | 54 | 53
Long-Term Debt | 1,332 | 1,336
Duke Energy Ohio [Member] |  |
Allowance for doubtful accounts - receivables | 3 | 2
Regulatory assets, current | 47 | 33
Other, current assets | 32 | 24
Regulatory assets, noncurrent | 545 | 531
Other, noncurrent assets | 46 | 41
Current maturities of long-term debt | 100 | 551
Long-Term Debt | $ 2,384 | $ 1,589
Common stock, par value (in usd per share) | $ 8.50 | $ 8.50
Common stock, shares authorized | 120,000,000 | 120,000,000
Common stock, shares outstanding | 90,000,000 | 90,000,000
Other | $ 94 | $ 93
Duke Energy Indiana [Member] |  |
Allowance for doubtful accounts - receivables | 2 | 2
Regulatory assets, current | 130 | 175
Other, current assets | 42 | 35
Regulatory assets, noncurrent | 1,038 | 982
Other, noncurrent assets | 203 | 194
Current maturities of long-term debt | 3 | 63
Long-Term Debt | 3,570 | 3,569
Other | 14 | 16
Piedmont Natural Gas [Member] |  |
Allowance for doubtful accounts - receivables | 4 | 2
Regulatory assets, current | 30 | 54
Other, current assets | 57 | 19
Regulatory assets, noncurrent | 280 | 303
Other, noncurrent assets | 60 | 52
Current maturities of long-term debt |  | 350
Long-Term Debt | $ 2,384 | $ 1,788
Common stock, shares authorized | 100 | 100
Common stock, shares outstanding | 100 | 100
Other | $ 145 | $ 177

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