Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

+ Details

Earnings (Loss) Per Share Calculation (Details 1) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	60,361	46,214	60,624	38,151
Earnings (Loss) Per Share Calculation (Textuals) [Abstract]
Interest on convertible notes	4.00%	4.00%	4.00%	4.00%
Shares underlying stock options, restricted stock units and warrants [Member]
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	6,032	7,171	6,295	8,171
0.25% Convertible Senior Notes due May 1, 2013 [Member]
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	5,470	7,539	5,470	7,539
Earnings (Loss) Per Share Calculation (Textuals) [Abstract]
Interest on convertible notes	0.25%		0.25%
4.0% Convertible Senior Notes due March 15, 2015 [Member]
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	18,396	18,396	18,396	9,333
Earnings (Loss) Per Share Calculation (Textuals) [Abstract]
Interest on convertible notes	4.00%		4.00%
0.875% Convertible Senior Notes due June 15, 2017 [Member]
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	13,108	13,108	13,108	13,108
Earnings (Loss) Per Share Calculation (Textuals) [Abstract]
Interest on convertible notes	0.875%		0.875%
3.75% Convertible Senior Notes due October 15, 2018 [Member]
Weighted average shares excluded from EPS Denominator due to anti-diluted effect
Total excluded due to anti-dilutive effect	17,355		17,355
Earnings (Loss) Per Share Calculation (Textuals) [Abstract]
Interest on convertible notes	3.75%		3.75%