Earnings (Loss) Per Share Calculation (Tables)

9 Months Ended

Jul. 31, 2011

Earnings (Loss) Per Share Calculation [Abstract]

Reconciliation of numerator and denominator of Basic and Diluted Earnings Per Share

	Quarter Ended July 31,						Nine Months Ended July 31,
Numerator	2010			2011			2010			2011
Net loss	$	(109,855	)	$	(31,450	)	$	(253,197	)	$	(173,192	)

	Quarter Ended July 31,				Nine Months Ended July 31,
Denominator	2010		2011		2010		2011
Basic weighted average shares outstanding		92,906		96,313		92,851		95,389
Dilutive weighted average shares outstanding		92,906		96,313		92,851		95,389

	Quarter Ended July 31,						Nine Months Ended July 31,
EPS	2010			2011			2010			2011
Basic EPS	$	(1.18	)	$	(0.33	)	$	(2.73	)	$	(1.82	)
Diluted EPS	$	(1.18	)	$	(0.33	)	$	(2.73	)	$	(1.82	)

Weighted average shares excluded from calculation of denominator for Basic and Diluted EPS

	Quarter Ended July 31,				Nine Months Ended July 31,
	2010		2011		2010		2011
Shares underlying stock options, restricted stock units and warrants		7,171		6,032		8,171		6,295
0.25% Convertible Senior Notes due May 1, 2013		7,539		5,470		7,539		5,470
4.00% Convertible Senior Notes due March 15, 2015		18,396		18,396		9,333		18,396
0.875% Convertible Senior Notes due June 15, 2017		13,108		13,108		13,108		13,108
3.75% Convertible Senior Notes due October 15, 2018		—		17,355		—		17,355
Total excluded due to anti-dilutive effect		46,214		60,361		38,151		60,624