Pension Plans - Fair Value of Unfunded, Non-qualified Deferred Compensation Plans Assets (Details) - USD ($) $ in Millions	Jan. 30, 2016	Jan. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 33.4	$ 29.8
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	25.1	20.8
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	8.3	9.0
Corporate-owned life insurance plans
Defined Benefit Plan Disclosure [Line Items]
Total assets	8.3	9.0
Corporate-owned life insurance plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	8.3	9.0
Money market funds
Defined Benefit Plan Disclosure [Line Items]
Total assets	25.1	20.8
Money market funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 25.1	$ 20.8