Consolidated Statements of Changes in Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]
Shares, Issued at Oct. 31, 2016		177,937
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 31, 2016	$ 4,235,202	$ 1,779	$ 728,464	$ 3,977,297	$ (474,912)	$ (3,336)	$ 4,229,292	$ 5,910
Net income	$ 535,495			535,495			535,495
Number of shares purchased	7,694
Purchase of treasury stock, value	$ (290,881)				(290,881)		(290,881)
Exercise of stock options and stock-based compensation issuances, shares
Exercise of stock options and stock-based compensation issuances, value	64,903		(36,896)		101,799		64,903
Employee stock purchase issuances, shares
Employee stock purchase issuances, value	1,221		81		1,140		1,221
Stock-based compensation	28,466		28,466				28,466
Dividends, Common Stock, Cash	(38,728)			(38,728)			(38,728)
Treasury Stock, Retired, Cost Method, Amount
Other Comprehensive Income (Loss)	1,426					1,426	1,426
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	(14)						0	(14)
Capital contribution (distribution)
Shares, Issued at Oct. 31, 2017		177,937
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 31, 2017	4,537,090	$ 1,779	720,115	4,474,064	(662,854)	(1,910)	4,531,194	5,896
Net income	$ 748,151			748,151			748,151
Number of shares purchased	12,108
Purchase of treasury stock, value	$ (503,159)				(503,159)		(503,159)
Exercise of stock options and stock-based compensation issuances, shares
Exercise of stock options and stock-based compensation issuances, value	12,180		(21,789)		33,969		12,180
Employee stock purchase issuances, shares
Employee stock purchase issuances, value	1,209		43		1,166		1,209
Stock-based compensation	28,312		28,312				28,312
Dividends, Common Stock, Cash	(62,077)			(62,077)			(62,077)
Treasury Stock, Retired, Cost Method, Amount
Other Comprehensive Income (Loss)	2,926					2,926	2,926
Income (loss) attributable to noncontrolling interest	(15)						0	(15)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	2,832						0	2,832
Capital contribution (distribution)	30
Shares, Issued at Oct. 31, 2018		177,937
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 31, 2018	4,768,912	$ 1,779	727,053	5,161,551	(1,130,878)	694	4,760,199	8,713
Cumulative Effect of New Accounting Principle in Period of Adoption	1,463		372	1,413		(322)	1,463
Net income	$ 590,007			590,007			590,007
Number of shares purchased	6,619
Purchase of treasury stock, value	$ (233,523)				(233,523)		(233,523)
Exercise of stock options and stock-based compensation issuances, shares
Exercise of stock options and stock-based compensation issuances, value	16,024		(26,368)		42,392		16,024
Employee stock purchase issuances, shares
Employee stock purchase issuances, value	1,323		14		1,309		1,323
Stock-based compensation	26,180		26,180				26,180
Dividends, Common Stock, Cash	(63,882)			(63,882)			(63,882)
Treasury Stock, Shares, Retired		(25,000)
Treasury Stock, Retired, Cost Method, Amount	0	$ (250)		(895,267)	895,517		0
Other Comprehensive Income (Loss)	(6,525)					(6,525)	(6,525)
Income (loss) attributable to noncontrolling interest	(19)						0	(19)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	38,183						0	38,183
Capital contribution (distribution)	49
Shares, Issued at Oct. 31, 2019		152,937
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Oct. 31, 2019	5,118,693	$ 1,529	726,879	4,774,422	(425,183)	(5,831)	5,071,816	46,877
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (17,987)			$ (17,987)			$ (17,987)