Fair Value Measurements and Financial Instruments - Narrative (Detail) - USD ($) $ in Millions	Jul. 29, 2017	Jan. 28, 2017	Aug. 02, 2016	Jul. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability			$ 43.2
Notional value of foreign currency derivatives gross	$ 480.2	$ 586.0		$ 792.2
Unsecured Debt [Member] \| Senior Notes 5.5% due 2019 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	347.2
Long-term Debt, Fair Value	360.7
Unsecured Debt [Member] \| Senior Notes 6.75% due 2021 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	469.2
Long-term Debt, Fair Value	494.7
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability	43.2	43.2	$ 43.2
Accrued Liabilities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability	$ 43.2	20.0
Other Noncurrent Liabilities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		$ 23.2