Consolidated Statements Of Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	[1]	Common shares at par value	Additional paid-in capital	Other reserves	Treasury shares	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	[1]	Accumulated other comprehensive (loss) income	Accumulated other comprehensive (loss) income Cumulative Effect, Period of Adoption, Adjustment	[1]
Balance at Feb. 03, 2018	$ 2,499.8	$ (16.5)		$ 15.7	$ 290.2	$ 0.4	$ (1,942.1)	$ 4,396.2	$ (15.7)		$ (260.6)	$ (0.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(657.4)							(657.4)
Other comprehensive income (loss)	(41.4)										(41.4)
Other comprehensive income (loss)	(42.2)
Dividends on common shares	(79.4)							(79.4)
Dividends on redeemable convertible preferred shares	(32.9)							(32.9)
Repurchase of common shares	(485.0)						(485.0)
Treasury share retirements	0.0			(3.1)	(58.4)		1,391.0	(1,329.5)
Net settlement of equity based awards	(2.1)				(11.8)		8.8	0.9
Share-based compensation expense	16.5				16.5
Balance at Feb. 02, 2019	1,201.6			12.6	236.5	0.4	(1,027.3)	2,282.2			(302.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	105.5							105.5
Other comprehensive income (loss)	9.0										9.0
Dividends on common shares	(77.4)							(77.4)
Dividends on redeemable convertible preferred shares	(32.9)							(32.9)
Net settlement of equity based awards	(0.1)				(8.0)		42.4	(34.5)
Share-based compensation expense	16.9				16.9
Balance at Feb. 01, 2020	1,222.6			12.6	245.4	0.4	(984.9)	2,242.9			(293.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15.2)							(15.2)
Other comprehensive income (loss)	3.3										3.3
Dividends on redeemable convertible preferred shares	(33.5)							(33.5)
Net settlement of equity based awards	(1.4)				(1.1)		4.7	(5.0)
Share-based compensation expense	14.5				14.5
Balance at Jan. 30, 2021	$ 1,190.3			$ 12.6	$ 258.8	$ 0.4	$ (980.2)	$ 2,189.2			$ (290.5)

[1] Reflects reclassifications to retained earnings related to 1) unrealized gains related to the Company’s equity security investments as of February 3, 2018 from AOCI associated with the adoption of ASU 2016-01 and 2) deferred costs associated with the sale of extended service plans due to the adoption of ASU 2014-09.