CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Stockholder's Equity	Non-controlling Interest
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 26				$ 33	$ (7)	$ 26
Beginning Treasury Stock, Shares at Oct. 31, 2018				0
Beginning Treasury Stock, Value at Oct. 31, 2018				$ 0
Beginning Balance (in Shares) at Oct. 31, 2018		317,715
Beginning Balance at Oct. 31, 2018	4,571	$ 3	$ 5,308		(336)	(408)	4,567	$ 4
Components of comprehensive income, net of tax
Net income	504				504		504
Other comprehensive income	34					34	34
Total comprehensive income (loss), net of tax	538						538
Change in non-controlling interest increase (decrease)	(4)							(4)
Cash dividends declared	(52)				(52)		(52)
Share-based awards issued, net of tax (in shares)		946
Share-based awards issued	8		8				8
Repurchase of common stock (in shares)				(1,128)
Repurchase of common stock	(75)			$ (75)			(75)
Retirement of treasury shares (in shares)		(1,128)		(1,128)
Retirement of treasury shares	0	$ 0	(16)	$ (75)	(59)		0
Share-based compensation	24		24				24
Ending Treasury Stock, Shares at Jan. 31, 2019				0
Ending Treasury Stock, Value at Jan. 31, 2019				$ 0
Ending Balance (in Shares) at Jan. 31, 2019		317,533
Ending Balance at Jan. 31, 2019	5,036	$ 3	5,324		90	(381)	5,036	0
Beginning Treasury Stock, Shares at Oct. 31, 2019				0
Beginning Treasury Stock, Value at Oct. 31, 2019				$ 0
Beginning Balance (in Shares) at Oct. 31, 2019		309,071
Beginning Balance at Oct. 31, 2019	4,748	$ 3	5,277		(18)	(514)	4,748	0
Components of comprehensive income, net of tax
Net income	197				197		197
Other comprehensive income	(7)					(7)	(7)
Total comprehensive income (loss), net of tax	190						190
Cash dividends declared	(56)				(56)		(56)
Share-based awards issued, net of tax (in shares)		1,703
Share-based awards issued	(1)		(1)				(1)
Repurchase of common stock (in shares)				(726)
Repurchase of common stock	(60)			$ (60)			(60)
Retirement of treasury shares (in shares)		(726)		(726)
Retirement of treasury shares	0	$ 0	(10)	$ (60)	(50)		0
Share-based compensation	27		27				27
Ending Treasury Stock, Shares at Jan. 31, 2020				0
Ending Treasury Stock, Value at Jan. 31, 2020				$ 0
Ending Balance (in Shares) at Jan. 31, 2020		310,048
Ending Balance at Jan. 31, 2020	$ 4,848	$ 3	$ 5,293		$ 73	$ (521)	$ 4,848	$ 0