Condensed Consolidated Statements of Cash Flows (Parenthetical) - Deferred Fuel Regulatory Assets $ in Billions	9 Months Ended
Sep. 30, 2022 USD ($)
Increase in regulatory assets	$ 2.2
Progress Energy
Increase in regulatory assets	$ 1.0

The increase (decrease) during the reporting period in the value of other assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Name:	us-gaap_IncreaseDecreaseInOtherRegulatoryAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration