Summary of Significant Accounting Policies - Schedule of New Accounting Pronouncement Adjustments (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017	Nov. 01, 2018
ASSETS
Accounts receivable, net	$ 6,031	$ 5,113		$ 5,326
Inventory	5,734	6,062		5,859
Other current assets	3,875	5,046		5,159
Other non-current assets	4,124	5,069		5,145
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities	10,143	8,852		9,310
Accumulated other comprehensive loss	(1,225)	(845)		(847)
Accumulated deficit	(818)	(473)		(730)
Net revenue	58,756	58,472	$ 52,056
Earnings from operations	3,877	3,831	3,368
Earnings before taxes	2,523	3,013	3,276
Benefit from taxes	629	2,314	(750)
Net earnings	3,152	5,327	$ 2,526
As Reported on October 31, 2018
ASSETS
Accounts receivable, net		5,113
Inventory		6,062
Other current assets		5,046
Other non-current assets		5,069
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities		8,852
Accumulated other comprehensive loss		(845)
Accumulated deficit		$ (473)
Adjustments under Topic 606 | As Restated on November 1, 2018
ASSETS
Accounts receivable, net				213
Inventory				(203)
Other current assets				203
Other non-current assets				33
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities				458
Accumulated other comprehensive loss				0
Accumulated deficit				(212)
Other | As Restated on November 1, 2018
ASSETS
Accounts receivable, net				0
Inventory				0
Other current assets				(90)
Other non-current assets				43
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities				0
Accumulated other comprehensive loss				(2)
Accumulated deficit				(45)
ASU 2016-16 | As Restated on November 1, 2018
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accumulated deficit				$ (47)
Effect of Adoption | Adjustments under Topic 606
ASSETS
Accounts receivable, net	(218)
Inventory	188
Other current assets	(188)
Other non-current assets	(31)
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities	(435)
Accumulated deficit	186
Net revenue	(33)
Earnings from operations	(33)
Earnings before taxes	(33)
Benefit from taxes	7
Net earnings	(26)
Balances Without Adoption of Topic 606
ASSETS
Accounts receivable, net	5,813
Inventory	5,922
Other current assets	3,687
Other non-current assets	4,093
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Other current liabilities	9,708
Accumulated deficit	(632)
Net revenue	58,723
Earnings from operations	3,844
Earnings before taxes	2,490
Benefit from taxes	636
Net earnings	$ 3,126