Condensed Consolidated Statements Of Shareholders' Equity (Unaudited) - 6 months ended Jul. 29, 2017 - USD ($) $ in Millions	Total	Common shares at par value	Additional paid-in capital	Other reserves	Treasury shares	Retained earnings	Accumulated other comprehensive loss
Balance at Jan. 28, 2017	$ 2,490.2	$ 15.7	$ 280.7	$ 0.4	$ (1,494.8)	$ 3,995.9	$ (307.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	171.9					171.9
Other comprehensive income	25.4						25.4
Dividends on common shares	(40.0)					(40.0)
Dividends on redeemable convertible preferred shares	(16.4)					(16.4)
Repurchase of common shares	(460.0)				(460.0)
Net settlement of equity based awards	(1.4)		(5.2)		4.9	(1.1)
Share options exercised	0.2				0.2
Share-based compensation expense	6.7		6.7
Balance at Jul. 29, 2017	$ 2,176.6	$ 15.7	$ 282.2	$ 0.4	$ (1,949.7)	$ 4,110.3	$ (282.3)