Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		6 Months Ended
		Apr. 30, 2018	Apr. 30, 2017
Cash flows from operating activities:
Net earnings (loss)		$ 2,214	$ (345)
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization		1,290	1,632
Stock-based compensation expense		186	252
Provision for inventory and doubtful accounts		81	39
Restructuring charges		268	393
Deferred taxes on earnings		(1,164)	506
(Earnings) loss from equity interests		(12)	25
Dividends received from equity investees		47	0
Other, net		97	310
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable		(42)	301
Financing receivables		(272)	120
Inventory		(587)	(210)
Accounts payable		177	129
Taxes on earnings		(2,217)	(386)
Restructuring		(414)	(545)
Other assets and liabilities	[1]	737	(2,672)
Net cash provided by (used in) operating activities		389	(451)
Cash flows from investing activities:
Investment in property, plant and equipment		(1,362)	(1,681)
Proceeds from sale of property, plant and equipment		292	142
Purchases of available-for-sale securities and other investments		(8)	(26)
Maturities and sales of available-for-sale securities and other investments		85	2
Financial collateral posted		(1,191)	(226)
Financial collateral returned		931	49
Payments made in connection with business acquisitions, net of cash acquired		(29)	(2,050)
Proceeds from (payments to) from business divestitures, net		13	(20)
Net cash used in investing activities		(1,269)	(3,810)
Cash flows from financing activities:
Short-term borrowings with original maturities less than 90 days, net		(25)	28
Proceeds from debt, net of issuance costs		611	541
Payment of debt		(610)	(2,102)
Net proceeds (payments) related to stock-based award activities		89	(14)
Repurchase of common stock		(1,649)	(1,311)
Cash dividends paid to non-controlling interests		(8)	0
Cash dividends paid		(236)	(216)
Net cash used in financing activities		(1,713)	(625)
Decrease in cash and cash equivalents		(2,593)	(4,886)
Cash and cash equivalents at beginning of period		9,579	12,987
Cash and cash equivalents at end of period		6,986	8,101
Seattle SpinCo, Inc.
Cash flows from financing activities:
Net transfer of cash and cash equivalents to Everett		156	0
Everett SpinCo, Inc.
Cash flows from financing activities:
Cash dividend from Everett		0	3,008
Net transfer of cash and cash equivalents to Everett		$ (41)	(559)
Non-U.S. pension plans | Pension Plan
Cash flows from financing activities:
Contributions by the Company			$ 1,900

[1] For the six months ended April 30, 2017, this amount includes $1.9 billion of pension funding payments associated with the separation and merger of Everett SpinCo, Inc. with Computer Sciences Corporation.