Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 28, 2017	Jan. 30, 2016
Assets
Foreign property, plant and equipment	$ 5.0	$ 5.4
Allowances for doubtful accounts	60.4	54.1
Revenue deferral	216.0	188.5
Derivative instruments	0.0	1.6
Straight-line lease payments	37.5	35.0
Deferred compensation	16.5	13.9
Share-based compensation	5.7	7.4
Other temporary differences	51.0	52.4
Net operating losses and foreign tax credits	69.2	80.6
Value of foreign capital losses	11.3	13.4
Total gross deferred tax assets (liabilities)	472.6	452.3
Valuation allowance	(31.5)	(31.9)
Deferred tax assets (liabilities)	441.1	420.4
(Liabilities)
Intangible assets	(160.1)	(156.2)
US property, plant and equipment	(86.2)	(73.6)
Inventory valuation	(289.4)	(252.8)
Derivative instruments		0.0
Retirement benefit obligations	(6.1)	(10.3)
Deferred tax assets (liabilities)	(541.8)	(492.9)
Total
Intangible assets	(160.1)	(156.2)
Property, plant and equipment		5.4
Inventory valuation	(289.4)	(252.8)
Allowances for doubtful accounts	60.4	54.1
Revenue deferral	216.0	188.5
Derivative instruments	0.0	1.6
Straight-line lease payments	37.5	35.0
Deferred compensation	16.5	13.9
Retirement benefit obligations	(6.1)	(10.3)
Share-based compensation	5.7	7.4
Other temporary differences	51.0	52.4
Net operating losses and foreign tax credits	69.2	80.6
Value of foreign capital losses	11.3	13.4
Total gross deferred tax assets (liabilities)	(69.2)	(40.6)
Valuation allowance	(31.5)	(31.9)
Deferred tax assets (liabilities)	100.7	72.5
Non-current assets	0.7	0.0
Non-current liabilities	(101.4)	(72.5)
Domestic Tax Authority
Total
Property, plant and equipment	(86.2)
Foreign Tax Authority
Total
Property, plant and equipment	$ 5.0	$ (73.6)