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Employee Benefit Plans (Net Periodic Benefit Costs) (Details) - Defined Benefit Pension Plans - USD ($)
$ in Thousands
 3 Months Ended
Dec. 29, 2018
Dec. 30, 2017
U.S. Plans    
Defined Benefit Plan Disclosure    
Service cost $ 5,251 $ 5,634
Interest cost 9,231 8,073
Expected return on plan assets (11,771) (13,576)
Amortization of prior service cost (credit) 46 47
Amortization of actuarial loss 5,466 6,902
Pension expense for defined benefit plans 8,223 7,080
Non-U.S. Plans    
Defined Benefit Plan Disclosure    
Service cost 1,246 1,470
Interest cost 1,101 1,055
Expected return on plan assets (1,298) (1,243)
Amortization of prior service cost (credit) (5) (14)
Amortization of actuarial loss 640 624
Pension expense for defined benefit plans $ 1,684 $ 1,892