Accrued Expenses and Other Current Liabilities - Components of Warranty Reserve (Details) - USD ($) $ in Millions	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Warranty Reserve [Line Items]
Non-current liabilities	$ 29.6	$ 27.7
Included within accrued expenses above	41.9	44.9	$ 19.1	$ 18.5
Warranty reserves
Warranty Reserve [Line Items]
Current liabilities	12.3	17.2
Non-current liabilities	29.6	27.7
Included within accrued expenses above	$ 41.9	$ 44.9