Commitments and Contingencies (Narrative) (Details) $ in Millions		1 Months Ended		12 Months Ended
	Jun. 16, 2021 people	Jun. 30, 2022 USD ($)	Apr. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) case reactor	Dec. 31, 2021 USD ($)	Jun. 18, 2018 USD ($)
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				96
Insured public liability limit per nuclear incident				$ 13,700.0
Excess nuclear liability program coverage				13,200.0
Pro rata assessment for each reactor owned for each incident exceeding public liability insurance				138.0
Annual payment limit to pro rata assessments				20.5
Industry aggregate limit				3,200.0
Sublimit for non-nuclear terrorist events				1,800.0
Sublimit property damage losses				1,500.0
Additional nuclear accident limit				$ 1,250.0
Insurance coverage percentage initial weeks				100.00%
Accidental outage insurance coverage initial weeks				365 days
Insurance coverage percentage additional weeks				80.00%
Accidental outage insurance coverage additional weeks				770 days
Weeks of sublimits for accidental outage coverage				728 days
Sublimit accidental outage recovery				$ 328.0
Maximum magnitude of retroactive premiums				10
Maximum period for retroactive premium assessment (in years)				6 years
Texas Storm Uri Tort Litigation | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims, number | case				5
Duke Energy Carolinas
Loss Contingencies [Line Items]
Primary nuclear liability program coverage				$ 450.0
Max retroactive premium assessments				$ 151.0
Duke Energy Carolinas | Catawba
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				2
Dedicated additional nuclear accident limit				$ 1,250.0
Additional Non-nuclear accident limit				750.0
Accidental outage insurance coverage policy limit				$ 490.0
Potential obligation percentage				100.00%
Duke Energy Carolinas | McGuire
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				2
Duke Energy Carolinas | Oconee
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				3
Additional Non-nuclear accident limit				$ 750.0
Duke Energy Carolinas | Ruben Villano, et al. v. Duke Energy Carolinas, LLC | Pending Litigation
Loss Contingencies [Line Items]
Number of individuals | people	9
Number of survivors | people	4
Number of deceased individuals | people	5
Duke Energy Carolinas | Asbestos Issue
Loss Contingencies [Line Items]
Asbestos-related injuries and damages reserves				457.0	$ 501.0
Loss contingency, receivable, noncurrent				595.0	$ 644.0
Duke Energy Progress
Loss Contingencies [Line Items]
Primary nuclear liability program coverage				450.0
Max retroactive premium assessments				$ 93.0
Duke Energy Progress | Harris
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				1
Duke Energy Progress | Robinson
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				1
Duke Energy Progress | Brunswick
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor				2
Duke Energy Progress | Spent Nuclear Fuel Matters
Loss Contingencies [Line Items]
Damages sought						$ 100.0
Amount awarded			$ 87.0
Duke Energy Florida
Loss Contingencies [Line Items]
Primary nuclear liability program coverage				$ 100.0
Max retroactive premium assessments				1.0
Duke Energy Florida | Crystal River Unit 3
Loss Contingencies [Line Items]
Sublimit property damage losses				50.0
Duke Energy Florida | Spent Nuclear Fuel Matters
Loss Contingencies [Line Items]
Damages sought						$ 200.0
Amount awarded		$ 180.0
Duke Energy and Duke Energy Carolinas | ASU 2016-13
Loss Contingencies [Line Items]
Premium receivable, allowance for credit loss				$ 12.0