Acquisitions and Divestitures Acquisitions (Details)	Sep. 30, 2019
ProCoatings [Member]
Business Acquisition [Line Items]
Number of Stores	23

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration