Pension Plans - Fair Value of Unfunded, Non-qualified Deferred Compensation Plans Assets (Details) - USD ($) $ in Millions	Feb. 02, 2019	Feb. 03, 2018
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 33.9	$ 37.5
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	26.9	30.2
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	7.0	7.3
Corporate-owned life insurance plans
Defined Benefit Plan Disclosure [Line Items]
Total assets	7.0	7.3
Corporate-owned life insurance plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets	7.0	7.3
Money market funds
Defined Benefit Plan Disclosure [Line Items]
Total assets	26.9	30.2
Money market funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 26.9	$ 30.2