Consolidated Statements Of Stockholders' Equity And Comprehensive Income (USD $) In Thousands, unless otherwise specified		Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance, Value at Oct. 31, 2008		$ 1,418	$ 1,471,031	$ 434,057	$ (342,856)	$ (35,279)	$ 1,528,371
Balance, Shares at Oct. 31, 2008		141,786
Components of comprehensive income (loss):
Net income				167,681			167,681
Unrealized gain (loss) on investments, net of tax						2,399	2,399
Deferred gain (loss) on cash flow hedges, net of tax						16,726	16,726
Reclassification adjustment on deferred loss (gain) on cash flow hedges, net of tax						8,840	8,840
Foreign currency translation adjustment						3,483	3,483
Other comprehensive income (loss)							31,448
Total comprehensive income (loss)							199,129
Common stock issued, Shares		5,159
Common stock issued, Value		51	(15,808)	(26,758)	114,238		71,723
Stock compensation expense			56,912				56,912
Tax adjustments	[1]		(11,969)				(11,969)
Balance, Value at Oct. 31, 2009		1,469	1,500,166	574,980	(228,618)	(3,831)	1,844,166
Balance, Shares at Oct. 31, 2009		146,945
Components of comprehensive income (loss):
Net income				237,063			237,063
Unrealized gain (loss) on investments, net of tax						(2,307)	(2,307)
Deferred gain (loss) on cash flow hedges, net of tax						(12,527)	(12,527)
Reclassification adjustment on deferred loss (gain) on cash flow hedges, net of tax						(3,443)	(3,443)
Foreign currency translation adjustment						6,334	6,334
Other comprehensive income (loss)							(11,943)
Total comprehensive income (loss)							225,120
Purchases of treasury stock, Shares		(8,236)
Purchase of treasury stock, Value		(82)	82		(184,699)		(184,699)
Common stock issued, Shares		9,770
Common stock issued, Value		98	(28,672)	(41,369)	215,731		145,788
Stock compensation expense			59,979				59,979
Stock awards assumed in acquisition			4,598				4,598
Tax adjustments	[1]		5,230				5,230
Balance, Value at Oct. 31, 2010		1,485	1,541,383	770,674	(197,586)	(15,774)	2,100,182
Balance, Shares at Oct. 31, 2010		148,479					148,479
Components of comprehensive income (loss):
Net income				221,364			221,364
Unrealized gain (loss) on investments, net of tax						(342)	(342)
Deferred gain (loss) on cash flow hedges, net of tax						(8,477)	(8,477)
Reclassification adjustment on deferred loss (gain) on cash flow hedges, net of tax						1,989	1,989
Foreign currency translation adjustment						1,659	1,659
Other comprehensive income (loss)							(5,171)
Total comprehensive income (loss)							216,193
Purchases of treasury stock, Shares		(15,144)
Purchase of treasury stock, Value		(151)	151		(401,836)		(401,836)
Equity forward contract			(33,335)				(33,335)
Common stock issued, Shares		9,973
Common stock issued, Value		99	(43,286)	(34,521)	241,390		163,682
Stock compensation expense			56,414				56,414
Balance, Value at Oct. 31, 2011		$ 1,433	$ 1,521,327	$ 957,517	$ (358,032)	$ (20,945)	$ 2,101,300
Balance, Shares at Oct. 31, 2011		143,308					143,308

[1] See Note 10 to the consolidated financial statements.