Consolidated Statements of Changes In Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interest
Beginning Balance at Oct. 31, 2008	$ 3,237,653	$ 1,604	$ 282,090	$ 2,953,655	$ (21)	$ 325	$ 0
Beginning balance, Shares at Oct. 31, 2008		160,369,000
Net income (loss)	(755,825)			(755,825)
Purchase of treasury stock	(1,473)	(1)	1		(1,473)
Purchase of treasury stock, shares	(79,000)	(79,000)
Exercise of stock options	24,320	44	22,954		1,322
Exercise of stock options, shares		4,415,000
Employee benefit plan issuances	486		486
Employee benefit plan issuances, shares		26,000
Conversion of restricted stock units to stock	48		35		13
Conversion of restricted stock units to stock, shares		1,000
Stock-based compensation	10,925		10,925
Aggregate fair value of Performance-Based RSU's issued	27		27
Formation of majority- owned joint venture	3,283						3,283
Other Comprehensive income (loss)	(2,962)					(2,962)
Ending Balance at Oct. 31, 2009	2,516,482	1,647	316,518	2,197,830	(159)	(2,637)	3,283
Ending Balance, Shares at Oct. 31, 2009		164,732,000
Net income (loss)	(3,374)			(3,374)
Purchase of treasury stock	(588)				(588)
Purchase of treasury stock, shares	(31,000)	(31,000)
Exercise of stock options	34,275	17	33,638		620
Exercise of stock options, shares		1,684,000
Employee benefit plan issuances	435		435
Employee benefit plan issuances, shares		24,000
Conversion of restricted stock units to stock	92	3	61		31
Stock-based compensation	9,332		9,332
Aggregate fair value of Performance-Based RSU's issued	22		22
Issuance of restricted stock and stock units, shares		1,000
Other Comprehensive income (loss)	2,060					2,060
Capital contribution	277						277
Ending Balance at Oct. 31, 2010	2,559,013	1,664	360,006	2,194,456	(96)	(577)	3,560
Ending Balance, Shares at Oct. 31, 2010		166,413,000
Net income (loss)	39,795			39,795
Purchase of treasury stock	(49,103)		(1)		(49,102)
Purchase of treasury stock, shares	(3,068,000)	0
Exercise of stock options	25,119	23	23,156		1,940
Exercise of stock options, shares		2,236,000
Employee benefit plan issuances	411		285		126
Employee benefit plan issuances, shares		15,000
Conversion of restricted stock units to stock	275		208		67
Conversion of restricted stock units to stock, shares		10,000
Stock-based compensation	8,626		8,626
Aggregate fair value of Performance-Based RSU's issued	8,102		8,102
Issuance of restricted stock and stock units, shares		1,000
Other Comprehensive income (loss)	(2,325)					(2,325)
Capital contribution	2,638						2,638
Ending Balance at Oct. 31, 2011	$ 2,592,551	$ 1,687	$ 400,382	$ 2,234,251	$ (47,065)	$ (2,902)	$ 6,198
Ending Balance, Shares at Oct. 31, 2011		168,675,000