Goodwill and Intangible Assets - Narrative (Details) (USD $)	3 Months Ended
	Apr. 27, 2014	Apr. 28, 2013	Jan. 26, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived intangible assets, gross	$ 185,997,000		$ 185,997,000
Amortization expense related to finite-lived intangible assets	6,400,000	7,900,000
Indefinite-lived intangible assets	$ 4,000,000		$ 4,000,000