Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 24, 2018	Feb. 25, 2017	Feb. 24, 2018	Feb. 25, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 1,453,192
Amounts reclassified from accumulated other comprehensive income (loss)	$ (1,182)	$ (27)	(1,178)	$ (103)
Other comprehensive income (loss)	45	3,103	(1,882)	(1,778)
Ending balance	1,544,401		1,544,401
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(17,945)	(25,943)	(15,932)	(20,814)
Other comprehensive income (loss) before reclassification	1,250	3,332	(763)	(1,797)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Other comprehensive income (loss)	1,250	3,332	(763)	(1,797)
Ending balance	(16,695)	(22,611)	(16,695)	(22,611)
Pension-related
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,477)	(8,251)	(5,477)	(8,251)
Other comprehensive income (loss) before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	(1,192)	0	(1,192)	0
Other comprehensive income (loss)	(1,192)	0	(1,192)	0
Ending balance	(6,669)	(8,251)	(6,669)	(8,251)
Derivative Financial Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(23)	364	(109)	116
Other comprehensive income (loss) before reclassification	(23)	(202)	59	122
Amounts reclassified from accumulated other comprehensive income (loss)	10	(27)	14	(103)
Other comprehensive income (loss)	(13)	(229)	73	19
Ending balance	(36)	135	(36)	135
Total Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(23,445)	(33,830)	(21,518)	(28,949)
Other comprehensive income (loss) before reclassification	1,227	3,130	(704)	(1,675)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,182)	(27)	(1,178)	(103)
Other comprehensive income (loss)	45	3,103	(1,882)	(1,778)
Ending balance	$ (23,400)	$ (30,727)	$ (23,400)	$ (30,727)