Borrowings - Narrative (Details) - USD ($)		1 Months Ended
	Aug. 01, 2024	Apr. 30, 2025	Mar. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Debt Instrument [Line Items]
Notional amount				$ 19,299,000,000	$ 20,253,000,000
Issuance costs				46,000,000	47,000,000
Discounts on debt issuance				10,000,000
Fair value adjustment related to hedged debt				(1,000,000)	(21,000,000)
Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility				6,000,000,000
Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility				5,000,000,000	$ 5,000,000,000
Lines of credit
Debt Instrument [Line Items]
Available borrowing resources				1,100,000,000
Forward Contracts
Debt Instrument [Line Items]
Notional amount		$ 825,000,000
U.S. Dollar Global Notes , Due April 2030 And 2035 | Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument		1,000,000,000
Payments of Debt Issuance Costs		9,000,000
$500 issued April 2025
Debt Instrument [Line Items]
Face amount of debt instrument				$ 500,000,000
Interest rate (percent)				5.40%
$500 issued April 2025 | Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument		$ 500,000,000
Interest rate (percent)		5.40%
$500 issued April 2025
Debt Instrument [Line Items]
Face amount of debt instrument				$ 500,000,000
Interest rate (percent)				6.10%
$500 issued April 2025 | Senior Notes
Debt Instrument [Line Items]
Face amount of debt instrument		$ 500,000,000
Interest rate (percent)		6.10%
New Revolving Facility | Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, term	5 years
364-Day Revolving Credit Facility | Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility			$ 1,000,000,000
Revolving credit facility, term			364 days