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Commitments and Contingencies (Table)
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3 Months Ended |
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Mar. 31, 2013
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Mar. 31, 2012
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Accrual For Environmental Loss Contingencies [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | | Balance at December 31, 2012 | | $ | 75 | | $ | 12 | | $ | 33 | | $ | 14 | | $ | 19 | | $ | 15 | | $ | 8 | | Provisions / adjustments | | | 2 | | | ― | | | 1 | | | ― | | | 1 | | | ― | | | ― | | Cash reductions | | | (6) | | | ― | | | (2) | | | (1) | | | (1) | | | (2) | | | (1) | | Balance at March 31, 2013 | | $ | 71 | | $ | 12 | | $ | 32 | | $ | 13 | | $ | 19 | | $ | 13 | | $ | 7 | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | (in millions) | | Duke Energy | | Duke Energy Carolinas | | Progress Energy | | Duke Energy Progress | | Duke Energy Florida | | Duke Energy Ohio | | Duke Energy Indiana | | Balance at December 31, 2011 | | $ | 61 | | $ | 12 | | $ | 23 | | $ | 11 | | $ | 12 | | $ | 28 | | $ | 9 | | Provisions / adjustments | | | 4 | | | 1 | | | 5 | | | (1) | | | 6 | | | 2 | | | ― | | Cash reductions | | | (7) | | | ― | | | (4) | | | (1) | | | (3) | | | (5) | | | ― | | Balance at March 31, 2012 | | $ | 58 | | $ | 13 | | $ | 24 | | $ | 9 | | $ | 15 | | $ | 25 | | $ | 9 | | | | | | | | | | | | | | | | | | | | | | | | |
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| Schedule of additional possible losses in excess of recorded environmental reserves [Table Text Block] |
| | | | | | | | | | (in millions) | | | | | | Duke Energy | | | | | $ | 84 | | Duke Energy Carolinas | | | | | | 29 | | Progress Energy | | | | | | 7 | | Duke Energy Progress | | | | | | 3 | | Duke Energy Florida | | | | | | 4 | | Duke Energy Ohio | | | | | | 43 | | Duke Energy Indiana | | | | | | 5 | | | | | | | | | |
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| Estimated costs of complying with recently issued and proposed EPA regulations [Table Text Block] |
| | | | | | | | | | (in millions) | | | | | | Duke Energy | $ | 650 | | to | $ | 800 | | Duke Energy Carolinas | | 65 | | to | | 85 | | Progress Energy | | 7 | | to | | 30 | | Duke Energy Progress | | 5 | | to | | 10 | | Duke Energy Florida | | 2 | | to | | 20 | | Duke Energy Ohio | | 40 | | to | | 85 | | Duke Energy Indiana | | 540 | | to | | 600 | | | | | | | | | |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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Duke Energy Carolinas [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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Progress Energy [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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Duke Energy Progress [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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Duke Energy Florida [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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Duke Energy Indiana [Member]
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| Valuation and Qualifying Accounts Disclosure [Line Items] |
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| Schedule of Litigation Reserves and Related Insurance Recoveries [Table Text Block] |
| | | | | | | | | | (in millions) | | March 31,
2013 | | December 31,
2012 | | Reserves for Legal and Other Matters(a) | | | | | | | | Duke Energy(b) | | $ | 834 | | $ | 846 | | Duke Energy Carolinas(b) | | | 743 | | | 751 | | Progress Energy | | | 75 | | | 79 | | Duke Energy Progress | | | 11 | | | 12 | | Duke Energy Florida(c) | | | 44 | | | 47 | | Duke Energy Indiana | | | 7 | | | 8 | | Probable Insurance Recoveries(d) | | | | | | | | Duke Energy(e) | | $ | 781 | | $ | 781 | | Duke Energy Carolinas(e) | | | 781 | | | 781 | | | | | | | | | | | (a) | Reserves are classified in the respective Condensed Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities. | | (b) | Includes reserves for aforementioned asbestos-related injuries and damages claims. | | (c) | Includes workers' compensation claims. | | (d) | Insurance recoveries are classified in the respective Condensed Consolidated Balance Sheets in Other within Investments and Other Assets and Receivables. | | (e) | Relates to recoveries associated with aforementioned asbestos-related injuries and damages claims. | | | | | | | | | |
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