v2.4.0.6

Goodwill (Goodwill By Reportable Operating Segment) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Goodwill [Line Items] |  |  |
Goodwill | $ 17,242 |  | $ 17,236
Goodwill, Acquired During Period | 6 | [1] |
Goodwill accumulated impairment charges | (871) |  | (871)
Goodwill as adjusted for accumulated impairment charges | 16,371 |  | 16,365
USFE&G [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 15,960 |  | 15,950
Goodwill, Acquired During Period | 10 | [1] |
Goodwill as adjusted for accumulated impairment charges | 15,960 |  | 15,950
Commercial Power [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 935 |  | 933
Goodwill, Acquired During Period | 2 | [1] |
Goodwill accumulated impairment charges | (871) |  | (871)
Goodwill as adjusted for accumulated impairment charges | 64 |  | 62
International [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 347 |  | 353
Goodwill, Acquired During Period | (6) | [1] |
Goodwill as adjusted for accumulated impairment charges | 347 |  | 353
Duke Energy Ohio [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 2,325 |  | 2,325
Goodwill accumulated impairment charges | (1,404) |  | (1,404)
Goodwill as adjusted for accumulated impairment charges | 921 |  | 921
Duke Energy Ohio [Member] | Franchised Electric & Gas [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 1,137 |  | 1,137
Goodwill accumulated impairment charges | (216) |  | (216)
Goodwill as adjusted for accumulated impairment charges | 921 |  | 921
Duke Energy Ohio [Member] | DEO Commercial Power [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 1,188 |  | 1,188
Goodwill accumulated impairment charges | $ (1,188) |  | $ (1,188)
[1] | Amounts represent purchase price adjustments related to the Progress Energy merger at USFE&G, a minor renewables acquisition at Commercial Power and the Ibener acquisition at International Energy. See Note 2 for further information on purchase price adjustments related to the Progress Energy Merger.

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- Definition Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph l -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 34 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -Clause 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The accumulated impairment losses related to goodwill as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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