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Basis Of Presentation Basis of Presentation (Impact from adoption of ASU 2017-07 on Operating Profit by Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 29, 2018
Dec. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit $ 79,377 $ 67,427
Deductions from operating profit:    
Non-service pension expense 3,193 1,693
Corporate and other expenses, net 6,310 7,253
Previously Reported    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   66,303
Deductions from operating profit:    
Non-service pension expense   0
Corporate and other expenses, net   7,822
ASC 2017-07 | Restatement Adjustment    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   1,124
Deductions from operating profit:    
Non-service pension expense   1,693
Corporate and other expenses, net   (569)
Aircraft Controls    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit 33,199 31,043
Aircraft Controls | Previously Reported    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   30,768
Aircraft Controls | ASC 2017-07 | Restatement Adjustment    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   275
Space And Defense Controls    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit 18,473 16,473
Space And Defense Controls | Previously Reported    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   16,289
Space And Defense Controls | ASC 2017-07 | Restatement Adjustment    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   184
Industrial Systems    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit $ 27,705 19,911
Industrial Systems | Previously Reported    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   19,246
Industrial Systems | ASC 2017-07 | Restatement Adjustment    
New Accounting Pronouncements or Change in Accounting Principle    
Operating profit   $ 665