Stockholders' Deficit (Tables) (Tables)

6 Months Ended

Apr. 30, 2017

Apr. 30, 2016

Accumulated Other Comprehensive Income (Loss) [Line Items]

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

The following table presents changes in Accumulated other comprehensive loss, net of tax, included in our Consolidated Statements of Stockholders' Deficit:

(in millions)	Unrealized Gain on Marketable Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of January 31, 2017	$	1	$	(292	)	$	(2,326	)	$	(2,617	)
Other comprehensive income before reclassifications	—		4			—			4
Amounts reclassified out of accumulated other comprehensive loss	—		—			34			34
Net current-period other comprehensive income	—		4			34			38
Balance as of April 30, 2017	$	1	$	(288	)	$	(2,292	)	$	(2,579	)

(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 loss before reclassifications	—		(8		)	—			(8		)
Amounts reclassified out of accumulated other comprehensive loss	—		—			69			69
Net current-period other comprehensive income (loss)	—		(8		)	69			61
Balance as of April 30, 2017	$	1	$	(288	)	$	(2,292	)	$	(2,579	)

(in millions)	Unrealized Gain on Marketable Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of January 31, 2016	$	1	$	(320	)	$	(2,282	)	$	(2,601	)
Other comprehensive income (loss) before reclassifications	—		50			(18		)	32
Amounts reclassified out of accumulated other comprehensive loss	—		—			33			33
Net current-period other comprehensive income	—		50			15			65
Balance as of April 30, 2016	$	1	$	(270	)	$	(2,267	)	$	(2,536	)

(in millions)	Unrealized Gain on Marketable Securities		Foreign Currency Translation Adjustments			Defined Benefit Plans			Total
Balance as of October 31, 2015	$	1	$	(287	)	$	(2,315	)	$	(2,601	)
Other comprehensive income (loss) before reclassifications	—		17			(18		)	(1		)
Amounts reclassified out of accumulated other comprehensive loss	—		—			66			66
Net current-period other comprehensive income	—		17			48			65
Balance as of April 30, 2016	$	1	$	(270	)	$	(2,267	)	$	(2,536	)

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:

		Three Months Ended April 30,						Six Months Ended April 30,
	Location in Consolidated Statements of Operations	2017			2016			2017			2016
Defined benefit plans
Amortization of prior service benefit	Selling, general and administrative expenses	$	—		$	(1	)	$	—		$	(1	)
Amortization of actuarial loss	Selling, general and administrative expenses	35			34			70			67
	Total before tax	35			33			70			66
	Tax expense	(1		)	—			(1		)	—
Total reclassifications for the period, net of tax		$	34		$	33		$	69		$	66