Net Income Per Share - Reconciliation between Basic and Diluted Weighted Average Shares Outstanding (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share [Abstract]
Net Income (Loss)	$ 227	$ 234	$ 790	$ 783
Net income attributable to unvested awarded performance stock	(2)	(3)	(8)	(9)
Net income attributable to common shares	$ 225	$ 231	$ 782	$ 774
Weighted average number of common shares outstanding – basic	334	286	305	285
Less unvested awarded performance stock included in weighted average number of common shares outstanding - basic	(3)	(4)	(3)	(4)
Weighted average number of common shares outstanding for basic net income per common share	331	282	302	281
Dilutive effect of potentially issuable common shares	1	2	2	2
Weighted average number of shares outstanding – diluted	332	284	304	283
Basic (in dollars per share)	$ 0.68	$ 0.82	$ 2.59	$ 2.75
Diluted (in dollars per share)	$ 0.68	$ 0.81	$ 2.57	$ 2.73