v2.4.0.6

Variable Interest Entities (Consolidated VIEs) (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Cash and cash equivalents | $ 1,296 |  | $ 1,424 |  | $ 1,071 | $ 2,110
Restricted Receivables of VIEs | 1,304 |  | 1,201 |  |  |
Other Current Assets | 2,062 |  | 2,425 |  |  |
Intangibles, net | 356 |  | 372 |  |  |
Restricted Other Assets of VIEs | 54 |  | 62 |  |  |
Other Assets | 2,466 |  | 2,399 |  |  |
Property, Plant and Equipment Cost, VIEs | 1,579 |  | 1,558 |  |  |
Accumulated depreciation and amortization | (32,501) |  | (31,969) |  |  |
Other Deferred Debits | 196 |  | 178 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Accounts payable | 1,985 |  | 2,444 |  |  |
Non-Recourse Notes Payable | 325 |  | 312 |  |  |
Current Maturities of Long-Term Debt | 3,323 |  | 3,110 |  |  |
Other Current Liabilities | 2,068 |  | 2,511 |  |  |
Non-Recourse Long-Term Debt | 1,255 |  | 852 |  |  |
Deferred income taxes | 10,518 |  | 10,490 |  |  |
Asset Retirement Obligation | 5,229 |  | 5,169 |  |  |
Other Liabilities | 2,196 |  | 2,221 |  |  |
Noncontrolling interests | 77 |  | 78 |  |  |
Cinergy Receivables [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 585 |  | 534 |  |  |
Total Assets | 585 |  | 534 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Non-Recourse Notes Payable | 325 |  | 312 |  |  |
Total Liabilities | 325 |  | 312 |  |  |
Net Assets of Consolidated VIEs | 260 |  | 222 |  |  |
CinCap V [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 16 |  | 15 |  |  |
Other Current Assets | 5 |  | 4 |  |  |
Restricted Other Assets of VIEs | 48 |  | 52 |  |  |
Other Assets | 12 |  | 10 |  |  |
Total Assets | 81 |  | 81 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Current Maturities of Long-Term Debt | 13 |  | 13 |  |  |
Other Current Liabilities | 6 |  | 4 |  |  |
Non-Recourse Long-Term Debt | 44 |  | 48 |  |  |
Other Liabilities | 11 |  | 10 |  |  |
Total Liabilities | 74 |  | 75 |  |  |
Net Assets of Consolidated VIEs | 7 |  | 6 |  |  |
Renewables [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 23 |  | 16 |  |  |
Other Current Assets | 208 |  | 133 |  |  |
Intangibles, net | 11 |  | 12 |  |  |
Restricted Other Assets of VIEs | 6 |  | 2 |  |  |
Other Assets | 1 |  |  |  |  |
Property, Plant and Equipment Cost, VIEs | 1,564 |  | 1,543 |  |  |
Accumulated depreciation and amortization | (114) |  | (98) |  |  |
Other Deferred Debits | 33 |  | 40 |  |  |
Total Assets | 1,732 |  | 1,648 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Accounts payable | 2 |  | 1 |  |  |
Taxes accrued | 3 |  | 62 |  |  |
Current Maturities of Long-Term Debt | 52 |  | 459 |  |  |
Other Current Liabilities | 29 |  | 25 |  |  |
Non-Recourse Long-Term Debt | 911 |  | 504 |  |  |
Deferred income taxes | 275 |  | 154 |  |  |
Asset Retirement Obligation | 23 |  | 23 |  |  |
Other Liabilities | 33 |  | 39 |  |  |
Total Liabilities | 1,328 |  | 1,267 |  |  |
Net Assets of Consolidated VIEs | 404 |  | 381 |  |  |
Other VIEs [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 0 |  | (1) |  |  |
Other Current Assets | 2 |  | 2 |  |  |
Other Assets | 2 |  | 2 |  |  |
Property, Plant and Equipment Cost, VIEs | 15 |  | 15 |  |  |
Accumulated depreciation and amortization | (5) |  | (5) |  |  |
Total Assets | 14 |  | 13 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Total Liabilities |  |  | 0 |  |  |
Net Assets of Consolidated VIEs | 14 |  | 13 |  |  |
Total Consolidated VIE [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 1,304 |  | 1,201 |  |  |
Other Current Assets | 215 |  | 139 |  |  |
Intangibles, net | 11 |  | 12 |  |  |
Restricted Other Assets of VIEs | 54 |  | 54 |  |  |
Other Assets | 15 |  | 12 |  |  |
Property, Plant and Equipment Cost, VIEs | 1,579 |  | 1,558 |  |  |
Accumulated depreciation and amortization | (119) |  | (103) |  |  |
Other Deferred Debits | 33 |  | 40 |  |  |
Total Assets | 3,092 |  | 2,913 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Accounts payable | 2 |  | 1 |  |  |
Non-Recourse Notes Payable | 325 |  | 312 |  |  |
Taxes accrued | 3 |  | 62 |  |  |
Current Maturities of Long-Term Debt | 65 |  | 472 |  |  |
Other Current Liabilities | 35 |  | 29 |  |  |
Non-Recourse Long-Term Debt | 1,255 |  | 852 |  |  |
Deferred income taxes | 275 |  | 154 |  |  |
Asset Retirement Obligation | 23 |  | 23 |  |  |
Other Liabilities | 44 |  | 49 |  |  |
Total Liabilities | 2,027 |  | 1,954 |  |  |
Noncontrolling interests | 0 |  |  |  |  |
Net Assets of Consolidated VIEs | 1,065 |  | 959 |  |  |
Duke Energy Carolinas [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Cash and cash equivalents | 5 |  | 19 |  | 15 | 289
Restricted Receivables of VIEs | 680 |  | 637 |  |  |
Other Current Assets | 428 |  | 439 |  |  |
Other Assets | 941 |  | 934 |  |  |
Accumulated depreciation and amortization | (11,663) |  | (11,437) |  |  |
Other Deferred Debits | 69 |  | 71 |  |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Accounts payable | 520 |  | 599 |  |  |
Current Maturities of Long-Term Debt | 406 |  | 406 |  |  |
Other Current Liabilities | 409 |  | 490 |  |  |
Non-Recourse Long-Term Debt | 300 |  | 300 |  |  |
Deferred income taxes | 5,281 |  | 5,181 |  |  |
Asset Retirement Obligation | 1,990 |  | 1,959 |  |  |
Other Liabilities | 912 |  | 924 |  |  |
Duke Energy Carolinas [Member] | DERF [Member] | Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |  |
Variable Interest Entity Consolidated Carrying Amount Assets [Abstract] |  |  |  |  |  |
Restricted Receivables of VIEs | 680 | [1] | 637 | [2] |  |
Total Assets | 680 | [1] | 637 | [2] |  |
Variable Interest Entity Consolidated Carrying Amount Liabilities [Abstract] |  |  |  |  |  |
Non-Recourse Long-Term Debt | 300 | [1] | 300 | [2] |  |
Total Liabilities | 300 | [1] | 300 | [2] |  |
Net Assets of Consolidated VIEs | $ 380 | [1] | $ 337 | [2] |  |
[1] | Duke Energy Receivables Finance Company, LLC (DERF) is a wholly owned limited liability company of Duke Energy Carolinas.
[2] | DERF is a wholly owned limited liability company of Duke Energy Carolinas.

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