Special Charges Changes in Accrued Special Charges (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Restructuring Cost and Reserve
Restructuring Reserve	$ 3,006	$ 4,517	$ 7,846	$ 5,541
Special charges	45,081	23,490	16,929
Payments for Restructuring	(46,592)	(26,819)	(14,624)
Early Retirement Benefits [Member]
Restructuring Cost and Reserve
Restructuring Reserve	0	0
Special charges	25,232	0	0
Payments for Restructuring	(25,232)
Employee Severance
Restructuring Cost and Reserve
Restructuring Reserve	1,935	370	1,004	2,028
Special charges	13,496	3,535	4,392
Payments for Restructuring	$ (11,931)	$ (4,169)	$ (5,416)
Percentage of termination benefit paid	86.00%	90.00%	80.00%
Litigation Costs
Restructuring Cost and Reserve
Restructuring Reserve	$ 311	$ 3,406	$ 4,855	624
Special charges	4,118	18,408	11,597
Payments for Restructuring	(7,213)	(19,857)	(7,366)
Other Restructuring
Restructuring Cost and Reserve
Restructuring Reserve	760	741	1,987	$ 2,889
Special charges	2,235	1,547	940
Payments for Restructuring	$ (2,216)	$ (2,793)	$ (1,842)

Percentage of termination benefit paid as of the balance sheet date.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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+ References

No definition available.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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