Inventories - Summary of Inventory Components (Details) - USD ($) $ in Millions	Aug. 01, 2015	Jan. 31, 2015	Aug. 02, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 114.2	$ 75.2	$ 55.5
Finished goods	2,300.0	2,363.8	2,289.8
Total inventories	$ 2,414.2	$ 2,439.0	$ 2,345.3