v2.4.0.6

Goodwill (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items] |  |
Goodwill By Reportable Operating Segment |  |
(in millions) |  | USFE&G |  | Commercial Power |  | International Energy |  | Total
Balance at December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 15,950 |  | $ | 933 |  | $ | 353 |  | $ | 17,236
Accumulated impairment charges |  |  | ― |  |  | (871) |  |  | ― |  |  | (871)
Balance at December 31, 2012, as adjusted for accumulated impairment charges |  |  | 15,950 |  |  | 62 |  |  | 353 |  |  | 16,365
Duke Energy Ohio [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Goodwill By Reportable Operating Segment |
Balance at March 31, 2013: |  |  |  |  |  |  |  |  |
Goodwill |  |  | 1,137 |  |  | 1,188 |  |  | 2,325
Accumulated impairment charges |  |  | (216) |  |  | (1,188) |  |  | (1,404)
Balance at March 31, 2013, as adjusted for accumulated impairment charges |  | $ | 921 |  | $ | ― |  | $ | 921
(in millions) |  | Franchised Electric & Gas |  | Commercial Power |  | Total
Balance at December 31, 2012: |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 1,137 |  | $ | 1,188 |  | $ | 2,325
Accumulated impairment charges |  |  | (216) |  |  | (1,188) |  |  | (1,404)
Balance at December 31, 2012, as adjusted for accumulated impairment charges |  |  | 921 |  |  | ― |  |  | 921

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 4: 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 5: 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. + Details
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