Condensed Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) $ in Millions		Total	Common shares at par value	Additional paid-in capital	Other reserves	Treasury shares	Retained earnings	Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Impact from adoption of new accounting pronouncements	[1]						$ 0.8	$ (0.8)
Beginning Balance at Feb. 03, 2018		$ 2,499.8	$ 15.7	$ 290.2	$ 0.4	$ (1,942.1)	4,396.2	(260.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(519.6)					(519.6)
Other comprehensive income		(44.9)						(44.9)
Dividends on common shares		(41.0)					(41.0)
Dividends on redeemable convertible preferred shares		(16.4)					(16.4)
Repurchase of common shares		(485.0)				(485.0)
Net settlement of equity based awards		(1.0)		(10.8)		9.1	0.7
Share-based compensation expense		8.2		8.2
Ending Balance at Aug. 04, 2018		$ 1,400.1	$ 15.7	$ 287.6	$ 0.4	$ (2,418.0)	$ 3,820.7	$ (306.3)

[1] Adjustment reflects the reclassification of unrealized gains related to the Company’s equity security investments as of February 3, 2018 from AOCI into beginning retained earnings associated with the adoption of ASU 2016-1.