Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Oct. 01, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated foreign currency translation	$ (152,135)		$ (110,626)
Other comprehensive income (loss) before reclassifications - Foreign currency translation	(40,538)
Amounts reclassified from AOCIL - Foreign currency translation	(971)
Other comprehensive income (loss) - Foreign currency translation	(41,509)
Accumulated retirement liability	(312,522)		(321,094)
Other comprehensive income (loss) before reclassifications - Retirement liability	2,563
Amounts reclassified from AOCIL - Retirement liability	6,009	$ 4,476
Other comprehensive income (loss) retirement liability	8,572	5,332
Accumulated loss on derivatives	(2,767)		(3,341)
Other comprehensive income (loss) before reclassification - Derivatives	(714)	(123)
Amounts reclassified from AOCIL - Derivatives	1,288	561
Other comprehensive income (loss) - Derivatives	574	438
Accumulated other comprehensive loss	(467,424)		$ (435,061)
Other comprehensive income (loss) before reclassifications - Total	(38,689)
Amounts reclassified from AOCIL - Total	6,326
Other comprehensive income (loss), net of tax	$ (32,363)	$ (17,429)