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Severance (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Restructuring Cost and Reserve [Line Items] |  |  |
Regulatory assets | $ 18,130 | $ 14,637 |
Duke Energy Carolinas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Regulatory assets | 5,388 | 3,479 |
Duke Energy Carolinas | Employee Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Regulatory assets |  |  | $ 65
Duke Energy Progress |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Regulatory assets | $ 5,414 | $ 4,651 |
Duke Energy Progress | Employee Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Regulatory assets |  |  | $ 33

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- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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