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Income Taxes | 9 Months Ended
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Sep. 30, 2020
Income Tax Disclosure [Abstract] |
Income Taxes | INCOME TAXES EFFECTIVE TAX RATES The ETRs 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,
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Duke Energy | 7.8 | % |  | 12.4 | % |  | (6.4 | )% |  | 12.5 | %
Duke Energy Carolinas | 12.0 | % |  | 16.7 | % |  | 13.6 | % |  | 17.7 | %
Progress Energy | 10.4 | % |  | 15.3 | % |  | 13.4 | % |  | 16.2 | %
Duke Energy Progress | 3.1 | % |  | 14.7 | % |  | 10.0 | % |  | 16.1 | %
Duke Energy Florida | 21.4 | % |  | 16.5 | % |  | 20.3 | % |  | 18.0 | %
Duke Energy Ohio | 16.7 | % |  | 12.9 | % |  | 16.6 | % |  | 15.2 | %
Duke Energy Indiana | 19.6 | % |  | 23.2 | % |  | 19.4 | % |  | 23.7 | %
Piedmont | 16.7 | % |  | 35.7 | % |  | 3.7 | % |  | 18.5 | %
The decrease in the ETR for Duke Energy for the three months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes. The decrease in the ETR for Duke Energy for the nine months ended September 30, 2020, was primarily due to the impact of the cancellation of the ACP pipeline project recorded in the second quarter of 2020 and an increase in the amortization of excess deferred taxes. The decrease in the ETR for Duke Energy Carolinas for the three and nine months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes. The decrease in the ETR for Progress Energy for the three and nine months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes. The decrease in the ETR for Duke Energy Progress for the three and nine months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes. The increase in the ETR for Duke Energy Florida for the three and nine months ended September 30, 2020, was primarily due to favorable tax adjustments in the prior year. The increase in the ETR for Duke Energy Ohio for the three and nine months ended September 30, 2020, was primarily due to favorable tax adjustments in the prior year. The decrease in the ETR for Duke Energy Indiana for the three and nine months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes. The decrease in the ETR for Piedmont for the three months ended September 30, 2020, was primarily due to a decrease in the amortization of excess deferred taxes, in relation to pretax losses. The decrease in the ETR for Piedmont for the nine months ended September 30, 2020, was primarily due to an increase in the amortization of excess deferred taxes and an increase in AFUDC equity. OTHER TAX MATTERS On March 27, 2020, the CARES Act was enacted. The CARES Act is an emergency economic stimulus package in response to the COVID-19 pandemic. Among other provisions, the CARES Act accelerates the remaining AMT credit refund allowances resulting in taxpayers being able to immediately claim a refund in full for any AMT credit carryforwards. As a result, the remaining AMT credit carryforwards were reclassified in the first quarter 2020 to a current receivable included in Other within Current Assets on the Condensed Consolidated Balance Sheets. In the third quarter of 2020, Duke Energy received $572 million related to these AMT credit carryforwards and $19 million of interest income. The other provisions within the CARES Act do not materially impact Duke Energy's income tax accounting. See Note 1 for information on COVID-19.

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