Share-Based Compensation Plans and Capital Stock Transactions - Employee Stock Purchase Plan (Narrative) (Details) - Employee Stock shares in Thousands, $ in Millions	12 Months Ended
Feb. 02, 2019 USD ($) offering_period shares	Feb. 03, 2018 shares	Jan. 28, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of offering periods under the ESPP \| offering_period	2
Percentage of the value of stock employees can purchase at	85.00%
Shares purchased under the ESPP (in shares) \| shares	175	232	191
Cash received from purchases under ESPP \| $	$ 1.4

Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration