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Fair Value (Tables)
3 Months Ended
Jan. 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 January 31, 2025As of October 31, 2024
 Fair Value Measured UsingFair Value Measured Using
 Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
 In millions
Assets:        
Cash Equivalents:        
Time deposits
$— $1,011 $— $1,011 $— $1,012 $— $1,012 
Government debt(1)
426 — — 426 1,332 — — 1,332 
Available-for-Sale Investments:
Financial institution instruments— — — — 
Marketable securities and mutual funds(2)
58 124 — 182 54 130 — 184 
Derivative Instruments:    
Interest rate contracts— 11 — 11 — — 
Foreign currency contracts— 451 — 451 — 225 — 225 
Other derivatives— — — — — — 
Total assets$484 $1,602 $— $2,086 $1,386 $1,374 $— $2,760 
Liabilities:        
Derivative Instruments:        
Interest rate contracts$— $14 $— $14 $— $22 $— $22 
Foreign currency contracts— 122 — 122 — 158 — 158 
Other derivatives— — — — — — 
Total liabilities$— $136 $— $136 $— $182 $— $182 
(1)    Government debt includes instruments such as U.S. treasury notes, U.S. agency securities and non-U.S. government bonds. Money market funds invested in government debt and traded in active markets are included in Level 1.
(2)    As of January 31, 2025 and October 31, 2024, $74 million and $78 million, respectively, of debt securities were restricted to fund benefits received by qualifying employees under a sponsored defined benefit plan.