Consolidated Statement of Changes in Equity - USD ($) $ in Millions		Total	Series C Preferred Stock	Total Stockholders' Equity	Total Stockholders' Equity Series C Preferred Stock	Preferred Stock	Preferred Stock Series C Preferred Stock	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest in Subsidiary
Beginning balance at Dec. 31, 2021		$ 8,292		$ 8,291		$ 2,000		$ 5	$ (1,558)	$ 9,824	$ (1,964)	$ (16)	$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases		(1,837)		(1,837)					(1,837)
Effects of stock-based incentive compensation plans		103		103						103
Net income (loss)		(1,210)		(1,227)							(1,227)		17
Dividends declared on common stock		(302)		(302)							(302)
Dividends declared on preferred stock		(151)		(151)							(151)
Change in accumulated other comprehensive income (loss)		23		23								23
Other		0		2						1	1		(2)
Ending balance at Dec. 31, 2022		4,918		4,902		2,000		5	(3,395)	9,928	(3,643)	7	16
Beginning balance at Dec. 31, 2021		8,292		8,291		2,000		5	(1,558)	9,824	(1,964)	(16)	1
Ending balance at Dec. 31, 2024		5,583		5,570		2,476		5	(5,912)	9,435	(454)	20	13
Beginning balance at Dec. 31, 2022		4,918		4,902		2,000		5	(3,395)	9,928	(3,643)	7	16
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Series C Preferred Stock issued			$ 476		$ 476		$ 476
Stock repurchases		(1,267)		(1,267)					(1,267)
Effects of stock-based incentive compensation plans		168		168						168
Net income (loss)		1,492		1,493							1,493		(1)
Dividends declared on common stock		(313)		(313)							(313)
Dividends declared on preferred stock		(150)		(150)							(150)
Change in accumulated other comprehensive income (loss)		(1)		(1)								(1)
Other		(1)		(1)						(1)	0		0
Ending balance at Dec. 31, 2023		5,322		5,307		2,476		5	(4,662)	10,095	(2,613)	6	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases		(1,250)		(1,250)					(1,250)
Effects of stock-based incentive compensation plans		140		140						140
Net income (loss)		2,812
Net Income		2,761		2,659							2,659		102
Dividends declared on common stock		(307)		(307)							(307)
Dividends declared on preferred stock		(192)		(192)							(192)
Dividends to noncontrolling interest		(15)											(15)
Change in accumulated other comprehensive income (loss)		14		14								14
Equity issued in subsidiary to acquire Energy Harbor		2,307		747						747			1,560
Modification of noncontrolling interest to redeemable noncontrolling interest	[1]	(3,198)		(1,539)						(1,539)			(1,659)
Other		1		(9)						(8)	(1)		10
Ending balance at Dec. 31, 2024		$ 5,583		$ 5,570		$ 2,476		$ 5	$ (5,912)	$ 9,435	$ (454)	$ 20	$ 13

[1] See Note 2 for additional information regarding activity associated with noncontrolling interest.