Goodwill and Intangibles - Schedule of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
Aug. 26, 2017	Aug. 27, 2016
Goodwill [Line Items]
Goodwill, Beginning balance	$ 391,887	$ 391,887
Goodwill added through acquisition	0	0
Goodwill adjustments	0	0
Goodwill, Ending balance	391,887	391,887
Auto Parts Locations [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	326,703	326,703
Goodwill added through acquisition	0	0
Goodwill adjustments	0	0
Goodwill, Ending balance	326,703	326,703
Other [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	65,184	65,184
Goodwill added through acquisition	0	0
Goodwill adjustments	0	0
Goodwill, Ending balance	$ 65,184	$ 65,184

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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