Commitments and Contingencies - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 27, 2014	Jan. 26, 2014
Loss Contingencies [Line Items]
Range of possible loss, minimum	$ 2.5
Range of possible loss, maximum	5.7
Environmental loss contingency accrual, at carrying value	2.5
Cycleo [Member]
Loss Contingencies [Line Items]
Potential payments under earn-out arrangements, high estimate	16.0
Potential payments under earn-out arrangements, payout period	4 years
Cumulative earn-out liability	$ 1.0	$ 0.9