Other Operating Income, Net - Components of Other Operating Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Other Income and Expenses [Abstract]
Interest income from in-house customer finance programs(1)	$ 258.1	$ 282.5	$ 252.6
Other	2.7	0.1	(1.7)
Other operating income, net	$ 260.8	$ 282.6	$ 250.9