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CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Cash flows from operating activities:      
Net income $ 627 $ 621 $ 165
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation 104 96 103
Amortization 222 212 207
Share-based compensation 92 82 59
Deferred tax expense (benefit) 41 (2) (789)
Excess and obsolete inventory-related charges 29 27 25
Gain on insurance proceeds received for damage to property, plant and equipment (32) 0 0
Gain on sale of assets and divestitures 0 (1) (20)
Goodwill impairment 0 0 709
Other non-cash expenses (income), net (10) (2) 16
Changes in assets and liabilities:      
Accounts receivable 75 (26) (89)
Inventory (73) (92) (61)
Accounts payable (33) 13 22
Employee compensation and benefits 2 0 63
Deferred revenue 41 112 75
Income taxes payable 5 (16) 181
Retirement and post-retirement benefits (108) (37) (127)
Other assets and liabilities 34 11 16
Net cash provided by operating activities 1,016 998 555
Cash flows from investing activities:      
Investments in property, plant and equipment (117) (120) (132)
Acquisitions of businesses and intangible assets, net of cash acquired (357) (88) (5)
Insurance proceeds received for damage to property, plant and equipment 32 0 0
Proceeds from the sale of assets and divestitures 0 2 29
Proceeds from sale of investments 0 7 0
Other investing activities 0 3 0
Net cash used in investing activities (442) (196) (108)
Cash flows from financing activities:      
Proceeds from issuance of common stock under employee stock plans 58 67 64
Payment of taxes related to net share settlement of equity awards (53) (26) (18)
Treasury stock repurchases (411) (159) (120)
Proceeds from issuance of long-term debt 0 500 0
Debt issuance costs 0 (4) 0
Proceeds from short-term borrowings 0 0 40
Repayment of debt and credit facility (7) (500) (300)
Payment of acquisition-related contingent consideration 0 0 (6)
Other financing activities 0 0 (1)
Net cash provided used in financing activities (413) (122) (341)
Effect of exchange rate movements 6 3 (9)
Net increase in cash, cash equivalents, and restricted cash 167 683 97
Cash, cash equivalents, and restricted cash at beginning of year 1,600 917 820
Cash, cash equivalents, and restricted cash at end of year $ 1,767 $ 1,600 $ 917