Business Segments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) reportable_segment segment Segment	Dec. 31, 2023 USD ($) asset	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Duke Energy Progress
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 7,017	6,488	6,753
Duke Energy Carolinas
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 9,718	8,288	7,857
Progress Energy
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 13,633	13,544	13,125
Duke Energy Florida
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 6,595	7,036	6,353
Duke Energy Ohio
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Operating Revenues	$ 2,545	$ 2,507	2,514
Duke Energy Indiana
Segment Reporting Information [Line Items]
Number of reportable segments | asset		1
Operating Revenues	$ 3,040	$ 3,399	3,922
Piedmont
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 1,729	$ 1,628	$ 2,124