Income Taxes - Summary of Income and Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Income before income taxes:
– US	$ 426.1	$ 380.8	$ 493.7
– Foreign	231.7	159.8	72.8
Income before income taxes	657.8	540.6	566.5
Current taxation:
– US	161.7	199.5	211.8
– Foreign	3.5	7.8	7.1
Deferred taxation:
– US	22.3	(47.9)	(22.8)
– Foreign	2.4	(0.1)	2.4
Total income taxes	$ 189.9	$ 159.3	$ 198.5