Allocation of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Oct. 02, 2015	Jan. 31, 2015	Oct. 31, 2014	Oct. 25, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,041,991		$ 1,071,786	$ 1,128,977
Belgium-based | Barco N V
Business Acquisition [Line Items]
Current assets		$ 80,400
Property, plant and equipment		6,206
Goodwill		48,537
Other assets		3,401
Total assets acquired		195,902
Current liabilities assumed		34,006
Long-term liabilities assumed		5,921
Net assets acquired		155,975
Belgium-based | Programs | Barco N V
Business Acquisition [Line Items]
Intangible assets subject to amortization		56,455
Belgium-based | Programs Two | Barco N V
Business Acquisition [Line Items]
Intangible assets subject to amortization		677
Belgium-based | Trade Name | Barco N V
Business Acquisition [Line Items]
Intangible assets subject to amortization		$ 226