Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	May 01, 2016	Apr. 30, 2017	May 01, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 824	$ 320	$ 1,527	$ 606
Other comprehensive income (loss), net of tax:
Change in unrealized net gain on investments	14	3	15	4
Change in unrealized net loss on derivative instruments	(15)	(4)	0	(7)
Change in defined and postretirement benefit plans	(3)	0	(10)	0
Other comprehensive income (loss), net of tax	(4)	(1)	5	(3)
Comprehensive income	$ 820	$ 319	$ 1,532	$ 603