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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Schedule of Legal Reserves

The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Consolidated Balance Sheets.

(in millions)			December 31, 2025						December 31, 2024
Reserves for Environmental Remediation
Duke Energy			$	72					$	68
Duke Energy Carolinas			36						24
Progress Energy			20						19
Duke Energy Progress			10						9
Duke Energy Florida			10						10
Duke Energy Ohio			12						21
Duke Energy Indiana			2						2
Piedmont			2						2

Schedule of Purchase Power Obligations

The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases.

									Minimum Purchase Amount at December 31, 2025
			Contract
(in millions)			Expiration						2026						2027						2028						2029						2030						Thereafter						Total
Duke Energy Progress(a)			2028-2042						$	18					$	18					$	18					$	2					$	3					$	29					$	88
Duke Energy Ohio(b)			2027						191						125						—						—						—						—						316
Duke Energy Indiana(b)			2027						73						7						—						—						—						—						80

(a)    Contracts represent between 18% and 100% of net plant output.

(b)    Share of net plant output varies.

Schedule of Natural Gas Supply Contract Commitments

The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2025.

(in millions)			2026			2027			2028			2029			2030			Thereafter			Total
Duke Energy Ohio			$	133		$	136		$	135		$	131		$	118		$	828		$	1,481
Piedmont			414			400			335			265			262			605			2,281

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Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount.

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Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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-Section 50
-Paragraph 9
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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Tabular disclosure of unconditional purchase obligation not recognized as liability.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 440
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-Section 50
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