Stockholders' Equity - Schedule of Accelerated Share Repurchases Agreement (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended			3 Months Ended							4 Months Ended	6 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	Oct. 31, 2025	Feb. 28, 2026	Nov. 30, 2025	Aug. 31, 2025	May 31, 2025	Feb. 28, 2025	Nov. 30, 2024	Aug. 31, 2024	Mar. 31, 2026	Feb. 28, 2026	Aug. 31, 2025	May 31, 2025	Feb. 28, 2025	Nov. 30, 2024
Share Repurchase Program [Line Items]
Total Shares Delivered (in shares)				0.5				0.7				1.7			2.5
Payments for repurchase of common stock												$ 600			$ 636
Accelerated Share Repurchase Program
Share Repurchase Program [Line Items]
Agreement Amount				$ 200	$ 45		$ 309	$ 310		$ 555		$ 200		$ 309	$ 310
Initial Shares Delivered (in shares)				0.8	0.2		1.8	1.8		4.2
Additional Shares Delivered (in shares)				0.0		0.0	0.2		1.0
Total Shares Delivered (in shares)												0.2	1.8	2.0		5.2
Average Price Paid Per Share (in dollars per share)												$ 209.67	$ 171.91	$ 154.44		$ 107.08
Value of shares repurchased		$ 200	$ 45
Payments for repurchase of common stock		$ 200	$ 45
Accelerated Share Repurchase Program | Subsequent event
Share Repurchase Program [Line Items]
Additional Shares Delivered (in shares)	0.0
Total Shares Delivered (in shares)											0.8
Average Price Paid Per Share (in dollars per share)											$ 246.29