Stockholders' Equity - Schedule of Accumulated Other Comprehensive Earnings (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jul. 03, 2015		Jun. 27, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (58,611)	[1]	$ (40,071)
Other comprehensive earnings before reclassifications	(26,350)		1,425
Amounts reclassified out of other comprehensive earnings	(1,818)		699
Tax benefit (expense)	296		(748)
Ending balance	(86,483)		(38,695)
Net Unrealized Gain (Loss) Defined Benefit Pension and Post-Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(44,060)		(40,081)
Other comprehensive earnings before reclassifications	0		0
Amounts reclassified out of other comprehensive earnings	1,623		1,737
Tax benefit (expense)	(226)		(321)
Ending balance	(42,663)		(38,665)
Net Unrealized Gain (Loss) Available for Sale Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	0
Other comprehensive earnings before reclassifications	(320)
Tax benefit (expense)	102
Ending balance	(218)
Net Unrealized Gains (Losses) Cash Flow Hedging Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	965		(691)
Other comprehensive earnings before reclassifications	2,318		2,177
Amounts reclassified out of other comprehensive earnings	(3,441)		(1,038)
Tax benefit (expense)	420		(427)
Ending balance	262		21
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(15,516)		701
Other comprehensive earnings before reclassifications	(28,348)		(752)
Amounts reclassified out of other comprehensive earnings	0		0
Tax benefit (expense)	0		0
Ending balance	$ (43,864)		$ (51)

[1] The condensed consolidated balance sheet as of September 26, 2014 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.