Condensed Consolidated Statements of Changes in Equity - Progress Energy - USD ($) $ in Millions	Total		Additional Paid-in Capital	Retained Earnings	Net Unrealized Gains (Losses) on Available-for-Sale Securities	Pension and OPEB Adjustments	Progress Energy	Progress Energy Additional Paid-in Capital	Progress Energy Retained Earnings	Progress Energy Net Gains (Losses) on Cash Flow Hedges	Progress Energy Net Unrealized Gains (Losses) on Available-for-Sale Securities	Progress Energy Pension and OPEB Adjustments
Beginning Balance (Attributable to Parent) at Dec. 31, 2022			$ 44,862	$ 2,637	$ (23)	$ (88)	$ 21,406	$ 11,832	$ 9,585	$ (1)	$ (8)	$ (2)
Beginning Balance (Parent) at Dec. 31, 2022	$ 51,853						21,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	761						359		359
Other comprehensive income (loss)	(26)	[1]			6	(1)	2				2
Other	(2)		(2)	0			(2)	(2)
Ending Balance (Attributable to Parent) at Mar. 31, 2023			44,837	2,626	(17)	(89)	21,765	11,830	9,944	(1)	(6)	(2)
Ending Balance (Parent) at Mar. 31, 2023	51,951						21,765
Beginning Balance (Attributable to Parent) at Dec. 31, 2023	49,112		44,920	2,235	(15)	(89)	22,860	11,830	11,040	(1)	(5)	(4)
Beginning Balance (Parent) at Dec. 31, 2023	50,187						22,860
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,151						435		435
Other comprehensive income (loss)	115	[1]			(2)	16	0
Other			1
Ending Balance (Attributable to Parent) at Mar. 31, 2024	49,551		$ 44,937	$ 2,542	$ (17)	$ (73)	23,295	$ 11,830	$ 11,475	$ (1)	$ (5)	$ (4)
Ending Balance (Parent) at Mar. 31, 2024	$ 50,638						$ 23,295

[1] Net of income tax expense of approximately $34 million and tax benefit of $8 million for the three months ended March 31, 2024, and 2023, respectively.