Consolidated Statements Of Shareholders' Equity - USD ($) $ in Millions		Total	Common shares at par value	Additional paid-in capital	Other reserves	Treasury shares	Retained earnings	Accumulated other comprehensive (loss) income
Balance at Jan. 30, 2016		$ 3,060.7	$ 15.7	$ 279.9	$ 0.4	$ (495.8)	$ 3,534.6	$ (274.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		543.2					543.2
Other comprehensive (loss) income		(33.6)						(33.6)
Dividends on common shares		(75.9)					(75.9)
Dividends on redeemable convertible preferred shares		(11.9)					(11.9)
Repurchase of common shares		(1,000.0)				(1,000.0)	0.0
Net settlement of equity based awards		(2.4)		(7.2)		(1.1)	5.9
Share options exercised		2.1				2.1
Share-based compensation expense		8.0		8.0
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		519.3					519.3
Other comprehensive (loss) income		47.1						47.1
Dividends on common shares		(77.5)					(77.5)
Dividends on redeemable convertible preferred shares		(32.9)					(32.9)
Repurchase of common shares		(460.0)				(460.0)
Net settlement of equity based awards		(2.8)		(6.5)		12.3	(8.6)
Share options exercised		0.3		(0.1)		0.4
Share-based compensation expense		16.1		16.1
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]
Impact from adoption of new accounting pronouncements	[1]	(16.5)					(15.7)	(0.8)
Net income		(657.4)					(657.4)
Other comprehensive (loss) income		(41.4)						(41.4)
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)

[1] Adjustments reflect reclassifications to retained earnings related to 1) deferred costs associated with the sale of extended service plans due to the adoption of ASU 2014-09 and 2) 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.