Stockholders' Deficit (Tables) (Tables)

12 Months Ended

Oct. 31, 2019

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

(in millions)	Unrealized Gain on Marketable Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of October 31, 2018	$	—	$	(315	)	$	(1,605	)	$	(1,920	)
Other comprehensive loss before reclassifications	—		(6		)	(178		)	(184		)
Amounts reclassified out of accumulated other comprehensive loss	—		—			192			192
Net current-period other comprehensive income (loss)	—		(6		)	14			8
Balance as of October 31, 2019	$	—	$	(321	)	$	(1,591	)	$	(1,912	)

(in millions)	Unrealized Gain on Marketable Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of October 31, 2017	$	—	$	(283	)	$	(1,928	)	$	(2,211	)
Other comprehensive income (loss) before reclassifications	—		(32		)	201			169
Amounts reclassified out of accumulated other comprehensive loss	—		—			122			122
Net current-period other comprehensive income (loss)	—		(32		)	323			291
Balance as of October 31, 2018	$	—	$	(315	)	$	(1,605	)	$	(1,920	)

(in millions)	Unrealized Gain on Marketable Securities			Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of October 31, 2016	$	1		$	(280	)	$	(2,361	)	$	(2,640	)
Other comprehensive income (loss) before reclassifications(A)	(1		)	(3		)	279			275
Amounts reclassified out of accumulated other comprehensive loss	—			—			154			154
Net current-period other comprehensive income (loss)	(1		)	(3		)	433			429
Balance as of October 31, 2017	$	—		$	(283	)	$	(1,928	)	$	(2,211	)

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

The following table presents the amounts reclassified from Accumulated other comprehensive loss and the affected line item in our Consolidated Statements of Operations:

		For the Years Ended October 31,
	Location in Consolidated Statements of Operations	2019			2018			2017
Defined benefit plans
Amortization of actuarial loss	Other expense, net	$	93		$	114		$	138
Settlements	Other expense, net	143			9			—
Settlements	Restructuring	—			—			23
	Total before tax	236			123			161
	Income tax expense	(44		)	(1		)	(7		)
Total reclassifications for the period, net of tax		$	192		$	122		$	154