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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($)
$ in Millions
 9 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Cash flows from operating activities    
Net income $ 877 $ 121
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 162 154
Share-based compensation 57 56
Deferred taxes (267) (21)
Excess and obsolete inventory related charges 12 22
Gain on step acquisition 0 (20)
Other non-cash expense, net 4 7
Changes in assets and liabilities:    
Accounts receivable (58) (9)
Inventory (31) (66)
Accounts payable 0 (9)
Employee compensation and benefits (35) (24)
Change in assets and liabilities due to Tax Act 0 533
Other assets and liabilities (14) (29)
Net cash provided by operating activities 707 715
Cash flows from Investing activities:    
Investments in property, plant and equipment (125) (141)
Payment to acquire fair value investment (21) (11)
Payments in exchange for convertible note (2) (2)
Payments to acquire intangible assets (1) 0
Acquisitions of businesses and intangible assets, net of cash acquired (248) (437)
Net cash used in investing activities (397) (591)
Cash flows from financing activities:    
Issuance of common stock under employee stock plans 52 53
Payment of taxes related to net share settlement of equity awards (15) (29)
Payment of dividends (155) (144)
Purchase of non-controlling interest (4) 0
Proceeds from revolving credit facility 0 483
Repayment of debt and revolving credit facility 0 (693)
Treasury stock repurchases (674) (336)
Net cash used in financing activities (796) (666)
Effect of exchange rate movements 3 (5)
Net decrease in cash, cash equivalents and restricted cash (483) (547)
Cash, cash equivalents and restricted cash at the beginning of the period 2,254 2,686
Cash, cash equivalents and restricted cash at the end of the period 1,771 2,139
Supplemental cash flow information:    
Income tax paid, net 108 86
Interest Paid, Excluding Capitalized Interest, Operating Activities 61 68
Non-cash changes in investments in property, plant and equipment increase (decrease) $ (26) $ (24)