Fair Value (Tables)

12 Months Ended

Oct. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents HP’s assets and liabilities that are measured at fair value on a recurring basis:

	As of October 31, 2025								As of October 31, 2024
	Fair Value Measured Using								Fair Value Measured Using
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
	In millions
Assets:
Cash Equivalents
Government debt(1)	$	1,878	$	—	$	—	$	1,878	$	1,332	$	—	$	—	$	1,332
Available-for-Sale Investments
Financial institution instruments	—		3		—		3		—		3		—		3
Marketable securities and mutual funds(2)	9		122		—		131		54		130		—		184
Derivative Instruments
Interest rate contracts	—		—		—		—		—		4		—		4
Foreign currency contracts	—		182		—		182		—		225		—		225
Other derivatives	—		1		—		1		—		—		—		—
Total assets	$	1,887	$	308	$	—	$	2,195	$	1,386	$	362	$	—	$	1,748
Liabilities:
Derivative Instruments
Interest rate contracts	$	—	$	1	$	—	$	1	$	—	$	22	$	—	$	22
Foreign currency contracts	—		242		—		242		—		158		—		158
Other derivatives	—		1		—		1		—		2		—		2
Total liabilities	$	—	$	244	$	—	$	244	$	—	$	182	$	—	$	182

(1)    Money market funds invested in government debt and traded in active markets are included in Level 1. Government debt includes instruments such as U.S. treasury notes, U.S. agency securities and non-U.S. government bonds.

(2)    As of October 31, 2025 and 2024, $63 million and $78 million, respectively, of debt securities were restricted to fund benefits received by qualifying employees under a sponsored defined benefit plan.