Segment Reporting - Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	May 04, 2019	Feb. 09, 2019	Nov. 17, 2018	May 05, 2018	Feb. 10, 2018	Nov. 18, 2017	Aug. 31, 2019	Aug. 25, 2018	Aug. 31, 2019	Aug. 25, 2018	Aug. 26, 2017
Segment Reporting Information [Line Items]
Net sales	$ 2,783,006	$ 2,450,568	$ 2,641,733	$ 2,660,152	$ 2,413,026	$ 2,589,131	$ 3,988,435	$ 3,558,769	$ 11,863,743	$ 11,221,077	$ 10,888,676
Gross profit	1,492,020	1,325,107	1,417,474	1,422,974	1,277,046	1,365,848	2,130,400	1,907,879	6,365,001	5,973,746	5,739,620
Operating, selling, general and administrative expenses									(4,148,864)	(4,162,890)	(3,659,551)
Interest expense, net									(184,804)	(174,527)	(154,580)
Income before income taxes	$ 504,284	$ 358,658	$ 448,812	$ 503,807	$ 165,758	$ 429,865	719,578	536,899	2,031,333	1,636,329	1,925,489
Assets							9,895,913	9,346,980	9,895,913	9,346,980	9,259,781
Capital Expenditures									496,050	521,788	553,832
Auto Parts Locations [Member]
Segment Reporting Information [Line Items]
Net sales									11,645,235	10,951,498	10,523,272
Gross profit									6,209,229	5,805,561	5,544,494
Assets							9,781,926	9,231,021	9,781,926	9,231,021	8,964,371
Capital Expenditures									479,120	499,762	533,304
Auto Parts Locations [Member] | Failure [Member]
Segment Reporting Information [Line Items]
Net sales									5,728,294	5,338,890	5,100,702
Auto Parts Locations [Member] | Maintenance Items [Member]
Segment Reporting Information [Line Items]
Net sales									4,140,987	3,914,546	3,774,386
Auto Parts Locations [Member] | Discretionary [Member]
Segment Reporting Information [Line Items]
Net sales									1,775,954	1,698,062	1,648,184
Other [Member]
Segment Reporting Information [Line Items]
Net sales									218,508	269,579	365,404
Gross profit									155,772	168,185	195,126
Assets							$ 113,987	$ 115,959	113,987	115,959	295,410
Capital Expenditures									$ 16,930	$ 22,026	$ 20,528