Borrowings (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Jan. 31, 2015	Oct. 31, 2015	Nov. 01, 2014
Debt Instrument
Long-term debt, gross		$ 875,298	$ 602,115
Unamortized discount		(79,196)	(4,839)
Current portion of long-term debt		(298)	(1,826)
Long-term debt, net of current portion		$ 795,804	595,450
Convertible Senior Unsecured 2020 Notes [Member]
Debt Instrument
Debt Instrument, Maturity Date Range, End	Jan. 01, 2020	Jan. 01, 2020
Stated annual interest rate		1.375%
Long-term debt, gross		$ 575,000	$ 0
Effective interest rate		4.98%	0.00%
Unamortized discount		$ (76,311)
Senior Unsecured 2023 Notes
Debt Instrument
Debt Instrument, Maturity Date Range, End		Jan. 15, 2023
Stated annual interest rate		4.625%
Long-term debt, gross		$ 300,000	$ 300,000
Effective interest rate		4.83%	4.83%
Senior Secured 2020 Notes
Debt Instrument
Debt Instrument, Maturity Date Range, End		Jan. 01, 2015
Stated annual interest rate		6.875%
Long-term debt, gross		$ 0	$ 300,000
Effective interest rate		8.39%	7.26%
Capital Lease Obligations
Debt Instrument
Debt Instrument, Maturity Date Range, End		May 31, 2016
Stated annual interest rate		4.63%
Long-term debt, gross		$ 298	$ 2,115
Effective interest rate		4.63%	5.37%

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Publisher SEC
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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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