Income Taxes - Summary of Income and Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Income (loss) before income taxes:
– US	$ (1,135.8)	$ 202.2	$ 424.0
– Foreign	333.2	325.0	289.8
Income (loss) before income taxes	(802.6)	527.2	713.8
Current taxation:
– US	(55.2)	35.9	137.6
– Foreign	15.8	6.1	3.9
Deferred taxation:
– US	(85.8)	(34.8)	28.1
– Foreign	(20.0)	0.7	1.0
Total income tax expense (benefit)	$ (145.2)	$ 7.9	$ 170.6

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