Leases - Future Minimum Annual Rental Commitments Under Non-Cancelable Operating Leases and Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013
Leases [Abstract]
2014	$ 228,747
2015	220,877
2016	204,112
2017	187,312
2018	170,745
Thereafter	945,429
Total minimum payments required	1,957,222
2014	32,246
2015	30,943
2016	24,363
2017	16,388
2018	5,283
Thereafter
Total minimum payments required	109,223
Less: Interest	(3,052)
Present value of minimum capital lease payments	$ 106,171