Summary of Significant Accounting Policies - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2017	Jan. 31, 2016	Feb. 01, 2015
Depreciation and Amortization Expenses For Property Plant And Equipment
Inventory write off	$ 16.1	$ 14.2	$ 12.4
Net revenue on unredeemed gift card balances	4.5	3.6	1.5
Transportation costs	44.9	40.6	35.9
Aggregate foreign exchange gains (losses) included in income amount	$ (8.3)	$ 12.0	$ 6.4
Franchise rights
Depreciation and Amortization Expenses For Property Plant And Equipment
Estimated useful lives of intangible assets	10 years
Building
Depreciation and Amortization Expenses For Property Plant And Equipment
Estimated useful life of assets	20 years
Leasehold Improvements
Depreciation and Amortization Expenses For Property Plant And Equipment
Estimated useful life of assets	5 years