Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 26, 2018	May 27, 2017	May 26, 2018	May 27, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 1,453,192
Other comprehensive loss	$ (3,859)	$ (1,444)	(5,741)	$ (3,222)
Ending balance	1,429,421		1,429,421
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(16,695)	(22,611)	(15,932)	(20,814)
Other comprehensive (loss) income before reclassification	(3,931)	(1,550)	(4,694)	(3,347)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Other comprehensive loss	(3,931)	(1,550)	(4,694)	(3,347)
Ending balance	(20,626)	(24,161)	(20,626)	(24,161)
Pension-related
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6,669)	(8,251)	(5,477)	(8,251)
Other comprehensive (loss) income before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	0	0	(1,192)	0
Other comprehensive loss	0	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	(36)	135	(109)	116
Other comprehensive (loss) income before reclassification	106	211	165	333
Amounts reclassified from accumulated other comprehensive loss	(34)	(105)	(20)	(208)
Other comprehensive loss	72	106	145	125
Ending balance	36	241	36	241
Total Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(23,400)	(30,727)	(21,518)	(28,949)
Other comprehensive (loss) income before reclassification	(3,825)	(1,339)	(4,529)	(3,014)
Amounts reclassified from accumulated other comprehensive loss	(34)	(105)	(1,212)	(208)
Other comprehensive loss	(3,859)	(1,444)	(5,741)	(3,222)
Ending balance	$ (27,259)	$ (32,171)	$ (27,259)	$ (32,171)