Business Acquisition Business Acquisition-Additional Details (Details) $ in Millions	3 Months Ended
Dec. 03, 2016 USD ($) Store
Business Acquisition [Line Items]
Number of Stores, Acquired \| Store	22
Payments to Acquire Businesses, Gross	$ 17
Business Acquisition, Fair Value of Assets	17
Business Acquisition, Inventory	8
Business Acquisition, Long-Lived Assets	7
Business Acquisition, Intangible Assets	1
Business Acquisition, Other Current Assets	$ 1

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

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