Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 25, 2017	Nov. 26, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,453,192
Other comprehensive (loss) income before reclassification	(1,931)	$ (4,805)
Amounts reclassified from accumulated other comprehensive (loss) income	4	(76)
Other comprehensive loss	(1,927)	(4,881)
Ending balance	1,485,608
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(15,932)	(20,814)
Other comprehensive (loss) income before reclassification	(2,013)	(5,129)
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Other comprehensive loss	(2,013)	(5,129)
Ending balance	(17,945)	(25,943)
Pension-related
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,477)	(8,251)
Other comprehensive (loss) income before reclassification	0	0
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Other comprehensive loss	0	0
Ending balance	(5,477)	(8,251)
Derivative Financial Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(109)	116
Other comprehensive (loss) income before reclassification	82	324
Amounts reclassified from accumulated other comprehensive (loss) income	4	(76)
Other comprehensive loss	86	248
Ending balance	(23)	364
Total Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(21,518)	(28,949)
Ending balance	$ (23,445)	$ (33,830)