v3.26.1
Financial Instruments - Schedule of Cash Equivalents and Available-for-Sale Investments (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Apr. 30, 2026
Oct. 31, 2025
Cash and Cash Equivalents [Line Items]    
Amortized Cost $ 220 $ 216
Gross Unrealized Gains 4 6
Fair Value 224 222
Equity securities, cost 69 65
Equity securities, gross unrealized gains (losses) 0 0
Equity securities, fair value 69 65
Total cash and equivalents and available-for-sale investments, cost 3,669 3,954
Total cash equivalents and available-for-sale investments, gross unrealized gains (losses) 4 6
Total cash equivalents and available-for-sale investments, fair value 3,673 3,960
Cost    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 3,449 3,738
Cost | Time deposits    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 846 997
Cost | Money market funds    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 2,603 2,741
Fair Value    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 3,449 3,738
Fair Value | Time deposits    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 846 997
Fair Value | Money market funds    
Cash and Cash Equivalents [Line Items]    
Total cash equivalents 2,603 2,741
Foreign bonds    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 110 107
Gross Unrealized Gains 1 4
Fair Value 111 111
Other debt securities    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 41 44
Gross Unrealized Gains 3 2
Fair Value 44 46
Total debt securities    
Cash and Cash Equivalents [Line Items]    
Amortized Cost 151 151
Gross Unrealized Gains 4 6
Fair Value 155 157
Equity securities in public companies    
Cash and Cash Equivalents [Line Items]    
Equity securities, cost 8 6
Equity securities, gross unrealized gains (losses) 0 0
Equity securities, fair value 8 6
Mutual funds    
Cash and Cash Equivalents [Line Items]    
Equity securities, cost 61 59
Equity securities, gross unrealized gains (losses) 0 0
Equity securities, fair value $ 61 $ 59