Commitments and Contingencies (Narrative) (Details) $ in Millions			12 Months Ended
	Aug. 11, 2021 people	Jun. 16, 2021 people	Dec. 31, 2023 USD ($) reactor case	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			95
Insured public liability limit per nuclear incident			$ 16,200.0
Excess nuclear liability program coverage			16,200.0
Pro rata assessment for each reactor owned for each incident exceeding public liability insurance			166.0
Annual payment limit to pro rata assessments			24.7
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
Accidental outage insurance coverage initial weeks (in days)			365 days
Insurance coverage percentage initial weeks (as a percent)			100.00%
Accidental outage insurance coverage additional weeks (in days)			770 days
Insurance coverage percentage additional weeks (as a percent)			80.00%
Weeks of sublimits for accidental outage coverage (in days)			728 days
Sublimit accidental outage recovery			$ 328.0
Maximum magnitude of retroactive premiums			10
Maximum period for retroactive premium assessment (in years)			6 years
Maximum | Pipeline and storage capacity contracts
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)			19 years
Maximum | Natural gas supply contracts fixed payment
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)			2 years
Maximum | Natural gas supply purchase commitments
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)			7 years
Texas Storm Uri Tort Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of pending claims | case			5
Duke Energy Carolinas
Loss Contingencies [Line Items]
Primary nuclear liability program coverage			$ 450.0
Max retroactive premium assessments			147.0
Duke Energy Carolinas | Asbestos Issue
Loss Contingencies [Line Items]
Asbestos-related injuries and damages reserves			423.0	$ 457.0
Loss contingency, receivable, noncurrent			572.0	595.0
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	4
Number of deceased individuals | people		5
Duke Energy Progress
Loss Contingencies [Line Items]
Primary nuclear liability program coverage			450.0
Max retroactive premium assessments			90.0
Duke Energy Florida
Loss Contingencies [Line Items]
Primary nuclear liability program coverage			100.0
Max retroactive premium assessments			1.0
Duke Energy and Duke Energy Carolinas | ASU 2016-13
Loss Contingencies [Line Items]
Premium receivable, allowance for credit loss			$ 9.0	$ 12.0
Catawba | Duke Energy Carolinas
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 (as a percent)			100.00%
McGuire | Duke Energy Carolinas
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			2
Oconee | Duke Energy Carolinas
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			3
Additional Non-nuclear accident limit			$ 750.0
Harris | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			1
Robinson | Duke Energy Carolinas
Loss Contingencies [Line Items]
Accidental outage insurance coverage policy limit			$ 378.0
Robinson | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			1
Brunswick | Duke Energy Carolinas
Loss Contingencies [Line Items]
Accidental outage insurance coverage policy limit			$ 462.0
Brunswick | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor			2
Crystal River Unit 3 | Duke Energy Florida
Loss Contingencies [Line Items]
Sublimit property damage losses			$ 50.0