Financial Instruments (Tables)

12 Months Ended

Oct. 31, 2025

Investments, All Other Investments [Abstract]

Schedule of Cash Equivalents and Available-for-Sale Investments

Cash Equivalents and Available-for-Sale Investments

	As of October 31, 2025								As of October 31, 2024
	Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value		Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
	In millions
Cash Equivalents:
Government debt(1)	1,878		—		—		1,878		1,332		—		—		$	1,332
Total cash equivalents	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)	104		27		—		131		115		69		—		184
Total available-for-sale investments	107		27		—		134		118		69		—		187
Total cash equivalents and available-for-sale investments	$	1,985	$	27	$	—	$	2,012	$	1,450	$	69	$	—	$	1,519

(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.

Schedule of Contractual Maturities of Investments in Available-for-Sale Debt Securities

Contractual maturities of investments in available-for-sale debt securities were as follows:

	As of October 31, 2025
	Amortized Cost		Fair Value
	In millions
Due in less than one year	$	15	$	15
Due in one to five years	49		51
	$	64	$	66

Schedule of Gross Notional and Fair Value of Derivative Financial Instruments in the Consolidated Condensed Balance Sheets

The gross notional and fair value of derivative instruments in the Consolidated Balance Sheets were as follows:

	As of October 31, 2025										As of October 31, 2024
	Outstanding Gross Notional		Other Current Assets		Other Non-Current Assets		Other Current Liabilities		Other Non-Current Liabilities		Outstanding Gross Notional		Other Current Assets		Other Non-Current Assets		Other Current Liabilities		Other Non-Current Liabilities
	In millions
Derivatives designated as hedging instruments
Fair value hedges:
Interest rate contracts	$	250	$	—	$	—	$	1	$	—	$	750	$	—	$	—	$	11	$	10
Cash flow hedges:
Foreign currency contracts	14,492		141		27		174		54		14,563		169		36		117		34
Interest rate contracts	—		—		—		—		—		500		—		4		—		1
Total derivatives designated as hedging instruments	14,742		141		27		175		54		15,813		169		40		128		45
Derivatives not designated as hedging instruments
Foreign currency contracts	4,389		14		—		14		—		4,284		20		—		7		—
Other derivatives	168		1		—		1		—		156		—		—		2		—
Total derivatives not designated as hedging instruments	4,557		15		—		15		—		4,440		20		—		9		—
Total derivatives	$	19,299	$	156	$	27	$	190	$	54	$	20,253	$	189	$	40	$	137	$	45

Schedule of Information Related to the Potential Effect of Entity's Master Netting Agreements and Collateral Security Agreements, Offsetting Assets

As of October 31, 2025 and 2024, information related to the potential effect of HP’s master netting agreements and collateral security agreements was as follows:

	In the Consolidated Balance Sheets
	(i)		(ii)		(iii) = (i)–(ii)		(iv)		(v)			(vi) = (iii)–(iv)–(v)
	Gross Amount Recognized		Gross Amount Offset		Net Amount Presented		Gross Amounts Not Offset
							Derivatives		Financial Collateral			Net Amount
	In millions
As of October 31, 2025
Derivative assets	$	183	$	—	$	183	$	143	$	15	(1)	$	25
Derivative liabilities	$	244	$	—	$	244	$	143	$	279	(2)	$	(178)
As of October 31, 2024
Derivative assets	$	229	$	—	$	229	$	113	$	88	(1)	$	28
Derivative liabilities	$	182	$	—	$	182	$	113	$	61	(2)	$	8

(1)Represents the cash collateral posted by counterparties as of the respective reporting date for HP’s asset position, net of derivative amounts that could be offset, as of, generally, two business days prior to the respective reporting date.

(2)Represents the collateral posted by HP including any excess or re-use of counterparty cash collateral as of the respective reporting date for HP’s liability position, net of derivative amounts that could be offset, as of, generally, two business days prior to the respective reporting date.

Schedule of Information Related to the Potential Effect of Entity's Master Netting Agreements and Collateral Security Agreements, Offsetting Liabilities

As of October 31, 2025 and 2024, information related to the potential effect of HP’s master netting agreements and collateral security agreements was as follows:

	In the Consolidated Balance Sheets
	(i)		(ii)		(iii) = (i)–(ii)		(iv)		(v)			(vi) = (iii)–(iv)–(v)
	Gross Amount Recognized		Gross Amount Offset		Net Amount Presented		Gross Amounts Not Offset
							Derivatives		Financial Collateral			Net Amount
	In millions
As of October 31, 2025
Derivative assets	$	183	$	—	$	183	$	143	$	15	(1)	$	25
Derivative liabilities	$	244	$	—	$	244	$	143	$	279	(2)	$	(178)
As of October 31, 2024
Derivative assets	$	229	$	—	$	229	$	113	$	88	(1)	$	28
Derivative liabilities	$	182	$	—	$	182	$	113	$	61	(2)	$	8

(1)Represents the cash collateral posted by counterparties as of the respective reporting date for HP’s asset position, net of derivative amounts that could be offset, as of, generally, two business days prior to the respective reporting date.

(2)Represents the collateral posted by HP including any excess or re-use of counterparty cash collateral as of the respective reporting date for HP’s liability position, net of derivative amounts that could be offset, as of, generally, two business days prior to the respective reporting date.

Schedule of Pre-Tax Effect of Derivative Instruments and Related Hedged Items in a Fair Value Hedging Relationship

The pre-tax effect of derivative instruments and related hedged items in a fair value hedging relationship were as follows:

Derivative Instrument	Hedged Item	Location	For the fiscal years ended October 31	Gain/(loss) recognized in earnings on derivative instruments		Gain/(loss) recognized in earnings on hedged item
				In millions
Interest rate contracts	Fixed-rate debt	Interest and other, net	2025	$	20	$	(20)
			2024	$	36	$	(36)
			2023	$	20	$	(20)

Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Accumulated Other Comprehensive (Loss) Income

The pre-tax effect of derivative instruments in cash flow hedging relationships included in Accumulated other comprehensive income (loss) was as follows:

	For the fiscal years ended October 31
	2025		2024		2023
	In millions
Gain/(loss) recognized in Accumulated other comprehensive income (loss) on derivatives:
Foreign currency contracts	$	(214)	$	47	$	(427)
Interest rate contracts	$	3	$	4	$	—

Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Earnings

The pre-tax effect of derivative instruments in cash flow hedging relationships included in earnings were as follows:

	Gain/ (loss) reclassified from Accumulated other comprehensive loss into earnings
	For the fiscal years ended October 31
	2025		2024		2023
	In millions
Products net revenue	$	(32)	$	408	$	243
Cost of products net revenue	(81)		(142)		(167)
Operating expenses	2		(4)		(4)
Interest and other, net	13		12		12
Total	$	(98)	$	274	$	84

Schedule of Pre-Tax Effect of Derivative Instruments Not Designated as Hedging Instruments Recognized in Interest and Other, Net in the Consolidated Condensed Statements of Earnings

The pre-tax effect of derivative instruments not designated as hedging instruments recognized in Interest and other, net in the Consolidated Statements of Earnings was as follows:

	Gain/(loss) recognized in earnings on derivative instrument
	Location	2025		2024		2023
		In millions
Foreign currency contracts	Interest and other, net	$	(11)	$	44	$	(65)
Other derivatives	Interest and other, net	3		—		(3)
Total		$	(8)	$	44	$	(68)