Consolidated Statements Of Earnings - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Income Statement [Abstract]
Net sales	$ 2,411,937	$ 2,525,532	$ 2,648,385
Cost of sales	1,700,354	1,788,828	1,850,809
Gross profit	711,583	736,704	797,576
Research and development	147,336	132,271	139,462
Selling, general and administrative	339,961	371,498	403,487
Interest	34,605	28,967	12,513
Restructuring	15,393	15,449	12,913
Goodwill impairment	4,800	0	0
Other	(3,372)	4,685	10,278
Earnings before income taxes	172,860	183,834	218,923
Income taxes	49,227	51,951	60,725
Net earnings attributable to common shareholders and noncontrolling interest	123,633	131,883	158,198
Net earnings (loss) attributable to noncontrolling interest	(3,112)	0	0
Net earnings attributable to common shareholders	$ 126,745	$ 131,883	$ 158,198
Net earnings per share attributable to common shareholders
Basic (USD per share)	$ 3.49	$ 3.39	$ 3.57
Diluted (USD per share)	$ 3.47	$ 3.35	$ 3.52
Average common shares outstanding
Basic	36,277,445	38,945,880	44,362,412
Diluted	36,529,344	39,334,520	44,952,437