Consolidated and Combined Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Cash flows from operating activities:
Net earnings	$ 3,161	$ 2,461	$ 1,648
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	3,775	3,947	4,144
Stock-based compensation expense	558	565	427
Provision for doubtful accounts	61	52	80
Provision for inventory	171	155	125
Restructuring charges	1,236	954	1,471
Deferred taxes on earnings	(1,345)	(2,522)	(304)
Excess tax benefit from stock-based compensation	(20)	(100)	(44)
Gain on H3C and MphasiS divestitures	(2,420)	0	0
Loss from equity interests	76	2	0
Other, net	195	374	11
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	991	9	986
Financing receivables	(301)	(393)	428
Inventory	34	(424)	69
Accounts payable	66	868	611
Taxes on earnings	1,615	956	404
Restructuring	(1,044)	(1,021)	(1,239)
Other assets and liabilities	(1,851)	(2,222)	(1,906)
Net cash provided by operating activities	4,958	3,661	6,911
Cash flows from investing activities:
Investment in property, plant and equipment	(3,280)	(3,344)	(3,620)
Proceeds from sale of property, plant and equipment	450	380	606
Purchases of available-for-sale securities and other investments	(656)	(243)	(940)
Maturities and sales of available-for-sale securities and other investments	585	298	1,023
Payments made in connection with business acquisitions, net of cash acquired	(22)	(2,644)	(49)
Proceeds from business divestitures, net	3,342	140	6
Net cash provided by (used in) investing activities	419	(5,413)	(2,974)
Cash flows from financing activities:
Short-term borrowings with original maturities less than 90 days, net	(71)	(39)	18
Issuance of debt	1,074	866	852
Payment of debt	(833)	(1,077)	(1,135)
Settlement of cash flow hedge	3	0	0
Issuance of common stock under employee stock plans	119	0	0
Repurchase of common stock	(2,662)	0	0
Net transfers from (to) former Parent	491	9,440	(3,542)
Issuance of Senior Notes relating to Separation	0	14,546	0
Distribution of net proceeds of Senior Notes relating to Separation, to former Parent	0	(14,529)	0
Cash dividends paid	(373)	(32)	(37)
Excess tax benefit from stock-based compensation	20	100	44
Net cash (used in) provided by financing activities	(2,232)	9,275	(3,800)
Increase in cash and cash equivalents	3,145	7,523	137
Cash and cash equivalents at beginning of period	9,842	2,319	2,182
Cash and cash equivalents at end of period	12,987	9,842	2,319
Supplemental cash flow disclosures:
Income taxes paid, net of refunds	656	192	302
Interest expense paid	585	291	357
Supplemental schedule of non-cash investing and financing activities:
Net transfers of property, plant and equipment from former Parent	$ 0	$ 1,788	$ 0