Dispositions (Narrative) (Details) $ in Millions					1 Months Ended		12 Months Ended
		Jul. 01, 2023 USD ($)	Sep. 08, 2021 USD ($)	Jan. 28, 2021 USD ($) closing	Dec. 31, 2022 USD ($)	Nov. 30, 2022 Units	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-Term Debt					$ 67,061		$ 67,061	$ 60,448
Sale of noncontrolling interest	[1]						1,034	999
Noncontrolling Interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of noncontrolling interest	[1]						$ 569	454
Duke Energy Indiana | Noncontrolling Interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage sold				19.90%
Number of closings | closing				2
Value of sale of parent interest			$ 1,030	$ 2,050	$ 1,030
Ownership interest sold (as a percentage)			11.05%		8.85%		8.85%
Proceed of purchase price for exchange in interest			50.00%
Transaction costs			$ 27		$ 6
Sale of noncontrolling interest			$ 545		492
Commercial Renewables Disposal Groups | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of disposal groups | Units						2
Noncontrolling interest balance					1,600		$ 1,600
Gain on disposal					72		72
Contract adjustments					95		95
Receivables, net					107		107	$ 87
Commercial Renewables Disposal Groups | Discontinued Operations, Held-for-sale | Forecast
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on extinguishment of debt		$ 100
Commercial Renewables Disposal Groups | Discontinued Operations, Held-for-sale | Duke
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposal					54		54
Commercial Renewables Disposal Groups | Discontinued Operations, Held-for-sale | Duke | Forecast
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on extinguishment of debt		$ 55
Commercial Renewables Disposal Groups | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Duke
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-Term Debt					$ 1,500		$ 1,500

[1] Relates primarily to the sale of a noncontrolling interest in Duke Energy Indiana. See Note 2 for additional discussion.