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Segment Reporting - Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	May 05, 2018	Feb. 10, 2018	Nov. 18, 2017	May 06, 2017	Feb. 11, 2017	Nov. 19, 2016	Aug. 25, 2018	Aug. 26, 2017	Aug. 25, 2018	Aug. 26, 2017	Aug. 27, 2016
Segment Reporting Information [Line Items]
Net sales	$ 2,660,152	$ 2,413,026	$ 2,589,131	$ 2,619,007	$ 2,289,219	$ 2,467,845	$ 3,558,769	$ 3,512,605	$ 11,221,077	$ 10,888,676	$ 10,635,676
Gross profit	1,422,974	1,277,046	1,365,848	1,378,418	1,205,536	1,301,542	1,907,879	1,854,125	5,973,746	5,739,620	5,608,736
Operating, selling, general and administrative expenses									(4,162,890)	(3,659,551)	(3,548,341)
Interest expense, net									(174,527)	(154,580)	(147,681)
Income before income taxes	503,807	165,758	429,865	493,895	349,771	425,596	536,899	656,227	1,636,329	1,925,489	1,912,714
Assets							9,346,980	9,259,781	9,346,980	9,259,781	8,599,787
Capital Expenditures									521,788	553,832	488,791
Net sales	$ 2,660,152	$ 2,413,026	$ 2,589,131	$ 2,619,007	$ 2,289,219	$ 2,467,845	3,558,769	3,512,605	11,221,077	10,888,676	10,635,676
Auto Parts Locations [Member]
Segment Reporting Information [Line Items]
Net sales									10,951,498	10,523,272	10,261,112
Gross profit									5,805,561	5,544,494	5,410,477
Assets							9,231,021	8,964,371	9,231,021	8,964,371	8,351,883
Capital Expenditures									499,762	533,304	470,631
Net sales									10,951,498	10,523,272	10,261,112
Auto Parts Locations [Member] | Failure [Member]
Segment Reporting Information [Line Items]
Net sales									5,338,890	5,100,702	4,913,423
Net sales									5,338,890	5,100,702	4,913,423
Auto Parts Locations [Member] | Maintenance Items [Member]
Segment Reporting Information [Line Items]
Net sales									3,914,546	3,774,386	3,721,240
Net sales									3,914,546	3,774,386	3,721,240
Auto Parts Locations [Member] | Discretionary [Member]
Segment Reporting Information [Line Items]
Net sales									1,698,062	1,648,184	1,626,449
Net sales									1,698,062	1,648,184	1,626,449
Other [Member]
Segment Reporting Information [Line Items]
Net sales									269,579	365,404	374,564
Gross profit									168,185	195,126	198,259
Assets							$ 115,959	$ 295,410	115,959	295,410	247,904
Capital Expenditures									22,026	20,528	18,160
Net sales									$ 269,579	$ 365,404	$ 374,564

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