CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Total Common Stockholders’ Equity	Common stock	OPIC	AOCI	Retained earnings (Accumulated deficit)	NCI
Beginning balance (in shares) at Dec. 31, 2022			572,000,000
Beginning balance at Dec. 31, 2022	$ 10,643	$ 10,166	$ 57	$ 11,322	$ (14)	$ (1,199)	$ 477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	310	292				292	18
Stock Investment Plan and share-based benefit plans (in shares)			1,000,000
Stock Investment Plan and share-based benefit plans	19	19		19
Cash dividends declared on common stock	(223)	(223)		(223)
Other comprehensive income (loss), net of tax	(1)	(1)			(1)
Noncontrolling interest distributions declared	(17)						(17)
Ending balance (in shares) at Mar. 31, 2023			573,000,000
Ending balance at Mar. 31, 2023	10,731	10,253	$ 57	11,118	(15)	(907)	478
Beginning balance (in shares) at Dec. 31, 2022			572,000,000
Beginning balance at Dec. 31, 2022	10,643	10,166	$ 57	11,322	(14)	(1,199)	477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	984
Other comprehensive income (loss), net of tax	(2)
Ending balance (in shares) at Sep. 30, 2023			574,000,000
Ending balance at Sep. 30, 2023	10,945	10,474	$ 57	10,705	(16)	(272)	471
Beginning balance (in shares) at Mar. 31, 2023			573,000,000
Beginning balance at Mar. 31, 2023	10,731	10,253	$ 57	11,118	(15)	(907)	478
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	254	235				235	19
Stock Investment Plan and share-based benefit plans	22	22		22
Noncontrolling interest distributions declared	(36)						(36)
Ending balance (in shares) at Jun. 30, 2023			573,000,000
Ending balance at Jun. 30, 2023	10,971	10,510	$ 57	11,140	(15)	(672)	461
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	420	400				400	20
Stock Investment Plan and share-based benefit plans (in shares)			1,000,000
Stock Investment Plan and share-based benefit plans	24	24		24
Cash dividends declared on common stock	(459)	(459)		(459)
Other comprehensive income (loss), net of tax	(1)	(1)			(1)
Noncontrolling interest distributions declared	(10)						(10)
Ending balance (in shares) at Sep. 30, 2023			574,000,000
Ending balance at Sep. 30, 2023	$ 10,945	10,474	$ 57	10,705	(16)	(272)	471
Beginning balance (in shares) at Dec. 31, 2023	574,335,396		574,000,000
Beginning balance at Dec. 31, 2023	$ 10,916	10,437	$ 57	10,494	(17)	(97)	479
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	267	253				253	14
Stock Investment Plan and share-based benefit plans (in shares)			2,000,000
Stock Investment Plan and share-based benefit plans	9	9		9
Cash dividends declared on common stock	(244)	(244)		(88)		(156)
FET Equity Interest Sale (Note 1)	2,673	1,942		1,942			731
Noncontrolling interest distributions declared	(8)						(8)
Ending balance (in shares) at Mar. 31, 2024			576,000,000
Ending balance at Mar. 31, 2024	$ 13,613	12,397	$ 57	12,357	(17)	0	1,216
Beginning balance (in shares) at Dec. 31, 2023	574,335,396		574,000,000
Beginning balance at Dec. 31, 2023	$ 10,916	10,437	$ 57	10,494	(17)	(97)	479
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	831
Other comprehensive income (loss), net of tax	$ 3
Ending balance (in shares) at Sep. 30, 2024	576,317,004		576,000,000
Ending balance at Sep. 30, 2024	$ 13,692	12,427	$ 58	12,356	(14)	27	1,265
Beginning balance (in shares) at Mar. 31, 2024			576,000,000
Beginning balance at Mar. 31, 2024	13,613	12,397	$ 57	12,357	(17)	0	1,216
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	98	45				45	53
Stock Investment Plan and share-based benefit plans	21	21	$ 1	20
Other comprehensive income (loss), net of tax	3	3			3
Noncontrolling interest distributions declared	(7)						(7)
Other	0	8		8			(8)
Ending balance (in shares) at Jun. 30, 2024			576,000,000
Ending balance at Jun. 30, 2024	13,728	12,474	$ 58	12,385	(14)	45	1,254
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	466	419				419	47
Stock Investment Plan and share-based benefit plans (in shares)			0
Stock Investment Plan and share-based benefit plans	24	24		24
Cash dividends declared on common stock	(490)	(490)		(53)		(437)
Other comprehensive income (loss), net of tax	0	0			0
Noncontrolling interest distributions declared	$ (36)	0		0			(36)
Ending balance (in shares) at Sep. 30, 2024	576,317,004		576,000,000
Ending balance at Sep. 30, 2024	$ 13,692	$ 12,427	$ 58	$ 12,356	$ (14)	$ 27	$ 1,265