Condensed Consolidated Statements of Changes in Equity - Progress Energy - USD ($) $ in Millions	Total		Total Equity	Additional Paid-in Capital	Retained Earnings	Net Unrealized Gains (Losses) on Available-for-Sale Securities	Pension and OPEB Adjustments	Noncontrolling Interests	Progress Energy	Progress Energy Total Equity	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	Progress Energy Noncontrolling Interests
Beginning Balance (Attributable to Parent) at Dec. 31, 2021			$ 49,296	$ 44,371	$ 3,265	$ (2)	$ (69)			$ 17,145	$ 9,149	$ 8,007	$ (2)	$ (2)	$ (7)
Beginning Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2021								$ 1,840								$ 3
Beginning Balance (Parent) at Dec. 31, 2021	$ 51,136								$ 17,148
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,113								1,499	1,498		1,498				1
Other comprehensive income (loss)	242	[1]	225			(20)	(3)	17	(3)	(3)			1	(4)
Distributions to noncontrolling interests	(92)							(92)	(34)							(34)
Common stock dividends	(2,297)		(2,297)		(2,297)				(250)	(250)		(250)
Equitization of certain notes payable to affiliates									2,906	2,906	475	2,431
Other	3		3	2	1				3	3	2	1
Ending Balance (Attributable to Parent) at Sep. 30, 2022			50,345	44,397	4,063	(22)	(72)			21,299	9,626	11,687	(1)	(6)	(7)
Ending Balance (Attributable to Noncontrolling Interest) at Sep. 30, 2022								1,824								(30)
Ending Balance (Parent) at Sep. 30, 2022	52,169								21,269
Beginning Balance (Attributable to Parent) at Jun. 30, 2022			49,720	44,373	3,457	(23)	(65)			20,137	9,149	11,001	(1)	(5)	(7)
Beginning Balance (Attributable to Noncontrolling Interest) at Jun. 30, 2022								1,864								3
Beginning Balance (Parent) at Jun. 30, 2022	51,584								20,140
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,413								686	686		686
Other comprehensive income (loss)	0		(5)			1	(7)	5	(1)	(1)				(1)
Distributions to noncontrolling interests	(42)							(42)	(33)							(33)
Common stock dividends	(776)		(776)		(776)
Equitization of certain notes payable to affiliates									475	475	475
Other	2		2	3	(1)				2	2	2
Ending Balance (Attributable to Parent) at Sep. 30, 2022			50,345	44,397	4,063	(22)	(72)			21,299	9,626	11,687	(1)	(6)	(7)
Ending Balance (Attributable to Noncontrolling Interest) at Sep. 30, 2022								1,824								$ (30)
Ending Balance (Parent) at Sep. 30, 2022	52,169								21,269
Beginning Balance (Attributable to Parent) at Dec. 31, 2022	49,322		49,322	44,862	2,637	(23)	(88)			21,406	11,832	9,585	(1)	(8)	(2)
Beginning Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2022	2,531							2,531
Beginning Balance (Parent) at Dec. 31, 2022	51,853								21,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,878								1,446	1,446		1,446
Other comprehensive income (loss)	261	[1]	261			(2)	(1)		2	2				2
Distributions to noncontrolling interests	(45)							(45)
Common stock dividends	(2,346)		(2,346)		(2,346)				(500)	(500)		(500)
Other	(1)		(5)	(6)	1			4	(3)	(3)	(2)	(1)
Ending Balance (Attributable to Parent) at Sep. 30, 2023	49,006		49,006	44,886	2,036	(25)	(89)			22,351	11,830	10,530	(1)	(6)	(2)
Ending Balance (Attributable to Noncontrolling Interest) at Sep. 30, 2023	2,820							2,820
Ending Balance (Parent) at Sep. 30, 2023	51,826								22,351
Beginning Balance (Attributable to Parent) at Jun. 30, 2023			48,333	44,866	1,615	(19)	(88)			22,150	11,830	10,329	(1)	(6)	(2)
Beginning Balance (Attributable to Noncontrolling Interest) at Jun. 30, 2023								2,738
Beginning Balance (Parent) at Jun. 30, 2023	51,071								22,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,321								702	702		702
Other comprehensive income (loss)	232	[1]	232			(6)	(1)
Distributions to noncontrolling interests	(20)							(20)
Common stock dividends	(793)		(793)		(793)				(500)	(500)		(500)
Other	2		(1)	(2)	1			3	(1)	(1)		(1)
Ending Balance (Attributable to Parent) at Sep. 30, 2023	49,006		$ 49,006	$ 44,886	$ 2,036	$ (25)	$ (89)			$ 22,351	$ 11,830	$ 10,530	$ (1)	$ (6)	$ (2)
Ending Balance (Attributable to Noncontrolling Interest) at Sep. 30, 2023	2,820							$ 2,820
Ending Balance (Parent) at Sep. 30, 2023	$ 51,826								$ 22,351

[1] Net of income tax expense of approximately $69 million for the three months ended September 30, 2023, and approximately $78 million and $72 million for the nine months ended September 30, 2023, and 2022, respectively. All other periods presented include immaterial income tax impacts.