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Significant Accounting Policies (Schedule Of Acquired Intangible Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 02, 2015
Sep. 26, 2014
Sep. 27, 2013
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Acquired intangible assets beginning balance $ 440,192 $ 217,904 $ 243,762
Acquisitions (5,307) 264,213  
Amortization (49,368) (46,820) (28,985)
Foreign currency translation 35,517 (1,289) 1,850
Acquired intangible assets ending balance $ 353,419 440,192 217,904
Weighted average amortization period (years) 9 years 2 months 12 days    
Customer Relationships, Contracts, and Backlog      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Acquired intangible assets beginning balance $ 408,041 195,527 217,729
Acquisitions (4,315) 249,164  
Foreign currency translation 34,418 (1,087) 1,471
Acquired intangible assets ending balance $ 329,341 408,041 195,527
Weighted average amortization period (years) 9 years 2 months 12 days    
Developed Technology      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Acquired intangible assets beginning balance $ 17,378 18,911 20,444
Acquisitions 0    
Acquired intangible assets ending balance $ 15,845 17,378 18,911
Weighted average amortization period (years) 10 years 3 months 18 days    
Trade Names      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Acquired intangible assets beginning balance $ 14,148 2,179 3,082
Acquisitions (1,292) 15,049  
Foreign currency translation 1,085 (171) 289
Acquired intangible assets ending balance $ 7,599 14,148 2,179
Weighted average amortization period (years) 4 years 4 months 24 days    
Other      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Acquired intangible assets beginning balance $ 625 1,287 2,507
Acquisitions 300 0  
Foreign currency translation 14 (31) 90
Acquired intangible assets ending balance $ 634 625 1,287
Weighted average amortization period (years) 6 years 10 months 24 days    
Excluding Investment in AWE Management Ltd      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Amortization $ (45,949) (43,214) (24,008)
Excluding Investment in AWE Management Ltd | Customer Relationships, Contracts, and Backlog      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Amortization (39,967) (37,737) (20,731)
Excluding Investment in AWE Management Ltd | Developed Technology      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Amortization (1,533) (1,533) (1,533)
Excluding Investment in AWE Management Ltd | Trade Names      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Amortization (4,172) (3,251) (614)
Excluding Investment in AWE Management Ltd | Other      
Acquired Finite-Lived Intangible Assets [Roll Forward]      
Amortization $ (277) $ (693) $ (1,130)