Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Jan. 31, 2018	Jan. 31, 2017
Cash flows from operating activities:
Net earnings		$ 1,436	$ 267
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization		635	840
Stock-based compensation expense		103	145
Provision for inventory and doubtful accounts		41	7
Restructuring charges		174	177
Deferred taxes on earnings		(1,335)	(125)
(Earnings) loss from equity interests		(22)	22
Other, net		102	125
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable		(34)	466
Financing receivables		(287)	126
Inventory		(146)	(132)
Accounts payable		(107)	(231)
Taxes on earnings		(1,009)	(22)
Restructuring		(226)	(326)
Other assets and liabilities	[1]	817	(2,529)
Net cash provided by (used in) operating activities		142	(1,190)
Cash flows from investing activities:
Investment in property, plant and equipment		(669)	(923)
Proceeds from sale of property, plant and equipment		115	84
Purchases of available-for-sale securities and other investments		(3)	(7)
Maturities and sales of available-for-sale securities and other investments		0	1
Financial collateral posted		(706)	0
Financial collateral returned		144	0
Payments made in connection with business acquisitions, net of cash acquired		0	(292)
Proceeds from business divestitures, net		0	(20)
Net cash used in investing activities		(1,119)	(1,157)
Cash flows from financing activities:
Short-term borrowings with original maturities less than 90 days, net		(3)	24
Proceeds from debt, net of issuance costs		270	248
Payment of debt		(253)	(262)
Net proceeds (payments) related to stock-based award activities		17	(42)
Repurchase of common stock		(742)	(641)
Cash dividends paid		(120)	(109)
Net cash used in financing activities		(929)	(782)
Decrease in cash and cash equivalents		(1,906)	(3,129)
Cash and cash equivalents at beginning of period		9,579	12,987
Cash and cash equivalents at end of period		7,673	9,858
Seattle SpinCo, Inc.
Cash flows from financing activities:
Net transfer of cash and cash equivalents to Everett		(70)	0
Everett SpinCo, Inc.
Cash flows from financing activities:
Net transfer of cash and cash equivalents to Everett		$ (28)	0
Non-U.S. pension plans | Pension Plan [Member]
Cash flows from financing activities:
Contributions by the Company			$ 1,900

[1] For the three months ended January 31, 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.