Goodwill and Intangibles - Schedule of Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 30, 2014	Aug. 31, 2013
Goodwill [Line Items]
Goodwill, Beginning balance	$ 367,829	$ 302,645
Goodwill added through acquisition		83,440
Goodwill adjustments	0	(18,256)
Goodwill, Ending balance	367,829	367,829
Auto Parts Stores [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	302,645	302,645
Goodwill added through acquisition		0
Goodwill adjustments	0	0
Goodwill, Ending balance	302,645	302,645
Other [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	65,184	0
Goodwill added through acquisition		83,440
Goodwill adjustments	0	(18,256)
Goodwill, Ending balance	$ 65,184	$ 65,184