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Income Taxes | 9 Months Ended
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Sep. 30, 2015
Income Tax Disclosure [Abstract] |
Income Taxes | INCOME TAXES The effective tax rates from continuing operations for each of the Duke Energy Registrants are included in the following table.
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Duke Energy | 30.9 | % |  | 34.0 | % |  | 32.5 | % |  | 31.4 | %
Duke Energy Carolinas | 36.5 | % |  | 33.9 | % |  | 36.3 | % |  | 33.7 | %
Progress Energy | 25.0 | % |  | 37.1 | % |  | 31.8 | % |  | 37.3 | %
Duke Energy Progress | 34.4 | % |  | 36.3 | % |  | 35.3 | % |  | 36.6 | %
Duke Energy Florida | 30.1 | % |  | 38.5 | % |  | 35.2 | % |  | 38.6 | %
Duke Energy Ohio | 39.3 | % |  | 38.3 | % |  | 37.6 | % |  | 34.9 | %
Duke Energy Indiana | 37.0 | % |  | 31.6 | % |  | 36.6 | % |  | 35.2 | %
The decrease in the effective tax rate for Duke Energy for the three months ended September 30, 2015, is primarily due to the tax benefit related to the manufacturing deduction in 2015, which was limited in the prior year due to taxable income, and a tax benefit from the legal entity restructuring of Duke Energy Florida and Duke Energy Progress. The increase in the effective tax rate for the nine months ended September 30, 2015, is primarily due to a deferred tax benefit related to the merger of two Chilean subsidiaries recorded in the second quarter of 2014 and a deferred tax charge for changes in apportionment related to state income taxes recorded in the second quarter of 2015 offset by the tax benefit related to the manufacturing deduction in 2015, which was limited in the prior year due to taxable income, and a tax benefit from the legal entity restructuring of Duke Energy Florida and Duke Energy Progress. The increase in the effective tax rate for Duke Energy Carolinas for the three months ended September 30, 2015, is primarily due to a decrease in the tax benefit of the manufacturing deduction in 2015 as compared to 2014, partially offset by a reduction of the North Carolina statutory corporate state income tax rate. The increase in the effective tax rate for the nine months ended September 30, 2015, is primarily due to favorable prior year audit settlements and changes in apportionment related to state income tax. The decrease in the effective tax rate for Progress Energy for the three and nine months ended September 30, 2015, is primarily due to a reduction of the North Carolina statutory corporate state income tax rate and release of tax reserves due to expired tax statutes. The decrease in the effective tax rate for Duke Energy Progress for the three and nine months ended September 30, 2015, is primarily due to a reduction of the North Carolina statutory corporate state income tax rate. The decrease in the effective tax rate for Duke Energy Florida for the three and nine months ended September 30, 2015, is primarily due to a release of tax reserves due to expired tax statutes. The increase in the effective tax rate for Duke Energy Ohio for the three months ended September 30, 2015, is primarily due to certain nondeductible book depreciation offset by the tax benefit related to the manufacturing deduction in 2014. The increase in the effective tax rate for the nine months ended September 30, 2015, is primarily due to the tax benefit related to the manufacturing deduction in 2014. The increase in the effective tax rate for Duke Energy Indiana for the three and nine months ended September 30, 2015, is primarily due to a prior period audit settlement in 2014, partially offset by a reduction in the Indiana statutory corporate state income tax rate.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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