v3.26.1
Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Apr. 30, 2026
Oct. 31, 2025
Assets    
Cash Equivalents $ 990 $ 1,878
Derivative Instruments 163 183
Total assets 1,278 2,195
Liabilities    
Derivative Instruments 252 244
Total liabilities 252 244
Government debt    
Assets    
Cash Equivalents 990 1,878
Financial institution instruments    
Assets    
Available-for-Sale Investments 3 3
Marketable securities and mutual funds    
Assets    
Available-for-Sale Investments 122 131
Liabilities    
Debt securities, restricted 53 63
Interest rate contracts    
Liabilities    
Derivative Instruments 0 1
Foreign currency contracts    
Assets    
Derivative Instruments 154 182
Liabilities    
Derivative Instruments 252 242
Other derivatives    
Assets    
Derivative Instruments 9 1
Liabilities    
Derivative Instruments 0 1
Level 1    
Assets    
Total assets 1,000 1,887
Liabilities    
Total liabilities 0 0
Level 1 | Government debt    
Assets    
Cash Equivalents 990 1,878
Level 1 | Financial institution instruments    
Assets    
Available-for-Sale Investments 0 0
Level 1 | Marketable securities and mutual funds    
Assets    
Available-for-Sale Investments 10 9
Level 1 | Interest rate contracts    
Liabilities    
Derivative Instruments 0 0
Level 1 | Foreign currency contracts    
Assets    
Derivative Instruments 0 0
Liabilities    
Derivative Instruments 0 0
Level 1 | Other derivatives    
Assets    
Derivative Instruments 0 0
Liabilities    
Derivative Instruments 0 0
Level 2    
Assets    
Total assets 278 308
Liabilities    
Total liabilities 252 244
Level 2 | Government debt    
Assets    
Cash Equivalents 0 0
Level 2 | Financial institution instruments    
Assets    
Available-for-Sale Investments 3 3
Level 2 | Marketable securities and mutual funds    
Assets    
Available-for-Sale Investments 112 122
Level 2 | Interest rate contracts    
Liabilities    
Derivative Instruments 0 1
Level 2 | Foreign currency contracts    
Assets    
Derivative Instruments 154 182
Liabilities    
Derivative Instruments 252 242
Level 2 | Other derivatives    
Assets    
Derivative Instruments 9 1
Liabilities    
Derivative Instruments 0 1
Level 3    
Assets    
Total assets 0 0
Liabilities    
Total liabilities 0 0
Level 3 | Government debt    
Assets    
Cash Equivalents 0 0
Level 3 | Financial institution instruments    
Assets    
Available-for-Sale Investments 0 0
Level 3 | Marketable securities and mutual funds    
Assets    
Available-for-Sale Investments 0 0
Level 3 | Interest rate contracts    
Liabilities    
Derivative Instruments 0 0
Level 3 | Foreign currency contracts    
Assets    
Derivative Instruments 0 0
Liabilities    
Derivative Instruments 0 0
Level 3 | Other derivatives    
Assets    
Derivative Instruments 0 0
Liabilities    
Derivative Instruments $ 0 $ 0