Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Oct. 31, 2025	Sep. 30, 2025	Jul. 31, 2025
Debt Instrument [Line Items]
Subtotal	$ 4,150		$ 4,175
Less: current maturities of debt	0		(400)
Unamortized discounts and debt issuance costs	(23)		(19)
Interest rate swap - fair value adjustment	(3)		(4)
Total long-term debt	4,124		3,752
Receivables Facility | Receivables Facility
Debt Instrument [Line Items]
Subtotal	0		375
Private placement notes
Debt Instrument [Line Items]
Interest rate (in percent)		3.73%
Private placement notes | Private placement notes
Debt Instrument [Line Items]
Subtotal	300		700
Senior notes | Unsecured senior notes, due April 2027 - October 2034
Debt Instrument [Line Items]
Subtotal	3,100		3,100
Senior notes | 2031 Senior Notes due March 2031
Debt Instrument [Line Items]
Interest rate (in percent)		4.35%
Subtotal	$ 750		$ 0