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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($)
$ in Millions
 9 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Cash flows from operating activities:    
Net Income $ 410 $ 426
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 76 72
Amortization 163 157
Share-based compensation 72 66
Deferred tax expense 7 14
Excess and obsolete inventory-related charges 21 20
Gain on insurance proceeds received for damage to property, plant and equipment (32) 0
Other non-cash expense (income), net (10) (5)
Changes in assets and liabilities:    
Accounts receivable 112 25
Inventory (91) (78)
Accounts payable (60) 10
Employee compensation and benefits (57) (55)
Deferred Revenue 35 103
Income taxes payable 8 (11)
Retirement and post-retirement benefits (9) (33)
Other assets and liabilities 33 24
Net cash provided by operating activities 678 735
Cash flows from investing activities:    
Investments in property, plant and equipment (87) (90)
Insurance proceeds received for damage to property, plant and equipment 32 0
Acquisition of businesses and intangible assets, net of cash acquired (324) (90)
Proceeds from sale of investments 0 7
Other investing activities 0 4
Net cash used in investing activities (379) (169)
Cash flows from financing activities:    
Proceeds from issuance of common stock under employee stock plans 57 65
Payment of taxes related to net share settlement of equity awards (52) (26)
Repayment of debt (7) 0
Treasury stock repurchases (196) (130)
Net Cash used in financing activities (198) (91)
Effect of exchange rate movements 2 4
Net increase in cash, cash equivalents, and restricted cash 103 479
Cash, cash equivalents, and restricted cash at beginning of period 1,600 917
Cash, cash equivalents, and restricted cash at end of period $ 1,703 $ 1,396