Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Millions		Total	Common Stock	Paid-in-Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2022			187,400,000
Beginning balance at Dec. 31, 2022		$ 7,693	$ 2	$ 6,824	$ 1,267	$ (23)	$ (377)
Beginning balance (in shares) at Dec. 31, 2022							(5,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		170			170
Common stock issuances (in shares)	[1]		12,700,000
Common stock issuances	[1]	1,684		1,695			$ (11)
Ending balance (in shares) at Mar. 31, 2023			200,100,000
Ending balance at Mar. 31, 2023		9,547	$ 2	8,519	1,437	(23)	$ (388)
Ending balance (in shares) at Mar. 31, 2023							(5,400,000)
Beginning balance (in shares) at Dec. 31, 2022			187,400,000
Beginning balance at Dec. 31, 2022		7,693	$ 2	6,824	1,267	(23)	$ (377)
Beginning balance (in shares) at Dec. 31, 2022							(5,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		773
Net other comprehensive income (loss)		1
Ending balance (in shares) at Sep. 30, 2023			200,100,000
Ending balance at Sep. 30, 2023		9,897	$ 2	8,541	1,764	(22)	$ (388)
Ending balance (in shares) at Sep. 30, 2023							(5,400,000)
Beginning balance (in shares) at Mar. 31, 2023			200,100,000
Beginning balance at Mar. 31, 2023		9,547	$ 2	8,519	1,437	(23)	$ (388)
Beginning balance (in shares) at Mar. 31, 2023							(5,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		280			280
Common stock issuances	[1]	10		10
Net other comprehensive income (loss)		1				1
Dividends (declared per common share)		(137)			(137)
Ending balance (in shares) at Jun. 30, 2023			200,100,000
Ending balance at Jun. 30, 2023		9,701	$ 2	8,529	1,580	(22)	$ (388)
Ending balance (in shares) at Jun. 30, 2023							(5,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		323			323
Common stock issuances	[1]	12		12
Net other comprehensive income (loss)		0
Dividends (declared per common share)		(139)			(139)
Ending balance (in shares) at Sep. 30, 2023			200,100,000
Ending balance at Sep. 30, 2023		$ 9,897	$ 2	8,541	1,764	(22)	$ (388)
Ending balance (in shares) at Sep. 30, 2023							(5,400,000)
Beginning balance (in shares) at Dec. 31, 2023		200,144,968	200,100,000
Beginning balance at Dec. 31, 2023		$ 9,797	$ 2	8,550	1,659	(26)	$ (388)
Beginning balance (in shares) at Dec. 31, 2023		(5,414,867)					(5,500,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		$ 185			185
Common stock issuances (in shares)	[2]		200,000
Common stock issuances	[2]	7		11			$ (4)
Net other comprehensive income (loss)		18				18
Ending balance (in shares) at Mar. 31, 2024			200,300,000
Ending balance at Mar. 31, 2024		$ 10,007	$ 2	8,561	1,844	(8)	$ (392)
Ending balance (in shares) at Mar. 31, 2024							(5,500,000)
Beginning balance (in shares) at Dec. 31, 2023		200,144,968	200,100,000
Beginning balance at Dec. 31, 2023		$ 9,797	$ 2	8,550	1,659	(26)	$ (388)
Beginning balance (in shares) at Dec. 31, 2023		(5,414,867)					(5,500,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		$ 812
Net other comprehensive income (loss)		$ 18
Ending balance (in shares) at Sep. 30, 2024		200,345,035	200,300,000
Ending balance at Sep. 30, 2024		$ 10,362	$ 2	8,588	2,172	(8)	$ (392)
Ending balance (in shares) at Sep. 30, 2024		(5,451,216)					(5,500,000)
Beginning balance (in shares) at Mar. 31, 2024			200,300,000
Beginning balance at Mar. 31, 2024		$ 10,007	$ 2	8,561	1,844	(8)	$ (392)
Beginning balance (in shares) at Mar. 31, 2024							(5,500,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		277			277
Common stock issuances	[2]	17		17
Net other comprehensive income (loss)		1				1
Dividends (declared per common share)		(150)			(150)
Ending balance (in shares) at Jun. 30, 2024			200,300,000
Ending balance at Jun. 30, 2024		10,152	$ 2	8,578	1,971	(7)	$ (392)
Ending balance (in shares) at Jun. 30, 2024							(5,500,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to common shareholders		350			350
Common stock issuances	[2]	10		10
Net other comprehensive income (loss)		(1)				(1)
Dividends (declared per common share)		$ (149)			(149)
Ending balance (in shares) at Sep. 30, 2024		200,345,035	200,300,000
Ending balance at Sep. 30, 2024		$ 10,362	$ 2	$ 8,588	$ 2,172	$ (8)	$ (392)
Ending balance (in shares) at Sep. 30, 2024		(5,451,216)					(5,500,000)

[1] Includes stock-based compensation, employee stock purchase plan and dividend reinvestment and direct stock purchase plan activity.

[2] Includes stock-based compensation, employee stock purchase plan and dividend reinvestment and direct stock purchase plan activity.