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Restructuring Activities - Additional Information (Detail) - USD ($) $ in Millions	Apr. 30, 2018	Nov. 30, 2017
Minimum [Member]
Restructuring Cost And Reserve [Line Items]
Estimated cost of restructuring action for fiscal 2018		$ 9.5
Minimum [Member] | Subsequent Event [Member]
Restructuring Cost And Reserve [Line Items]
Estimated cost of restructuring action for fiscal 2018	$ 2.3
Maximum [Member]
Restructuring Cost And Reserve [Line Items]
Estimated cost of restructuring action for fiscal 2018		$ 9.9
Maximum [Member] | Subsequent Event [Member]
Restructuring Cost And Reserve [Line Items]
Estimated cost of restructuring action for fiscal 2018	$ 2.7

X

- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

Reference 1: 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 2: 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

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+ References

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