Regulatory Matters (Regulatory Matters Narrative - Duke Energy) (Details) customer in Thousands, $ in Millions	Oct. 31, 2022 USD ($)	Sep. 30, 2022 customer	Aug. 05, 2022 USD ($)
Hurricane Ian | Duke Energy Carolinas and Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Number of customers impacted by storm | customer		950
Hurricane Ian | Duke Energy Carolinas and Duke Energy Progress | Subsequent event | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred	$ 100
Hurricane Ian | Duke Energy Carolinas and Duke Energy Progress | Subsequent event | Maximum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred	$ 125
Storm Cost Securitization Legislation | Duke Energy Progress | PSCSC
Public Utilities, General Disclosures [Line Items]
Deferred storm costs			$ 223