Summary of Significant Accounting Policies (Tables)

3 Months Ended

Jan. 31, 2017

Accounting Policies [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended January 31,
(in millions)	2017			2016
Balance at beginning of period	$	818		$	994
Costs accrued and revenues deferred(B)	45			41
Currency translation adjustment	—			(1		)
Adjustments to pre-existing warranties(A)	(17		)	5
Payments and revenues recognized(B)	(95		)	(117		)
Balance at end of period	751			922
Less: Current portion	371			421
Noncurrent accrued product warranty and deferred warranty revenue	$	380		$	501