Acquisitions - Acquisition-Related Costs (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Oct. 31, 2021	Nov. 01, 2020	Oct. 31, 2021	Nov. 01, 2020
L&M
Business Acquisition [Line Items]
Acquisition-related costs	$ 0.7	$ 0.0	$ 0.9	$ 0.0
Pacific Pipe
Business Acquisition [Line Items]
Acquisition-related costs	1.0	0.0	1.2	0.0
R&B
Business Acquisition [Line Items]
Acquisition-related costs	0.0	0.0	0.0	1.4
Other 2021 Acquisitions
Business Acquisition [Line Items]
Acquisition-related costs	$ 0.0	$ 0.0	$ 0.0	$ 0.0

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration