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Employee Benefit Plans (Net Periodic Benefit Costs) (Details) - Defined Benefit Pension Plans - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Mar. 30, 2019
Mar. 31, 2018
U.S. Plans        
Defined Benefit Plan Disclosure        
Service cost $ 5,251 $ 5,633 $ 10,502 $ 11,267
Interest cost 9,231 8,073 18,462 16,146
Expected return on plan assets (11,771) (13,575) (23,542) (27,151)
Amortization of prior service cost (credit) 47 47 93 94
Amortization of actuarial loss 5,466 6,902 10,932 13,804
Pension expense for defined benefit plans 8,224 7,080 16,447 14,160
Non-U.S. Plans        
Defined Benefit Plan Disclosure        
Service cost 1,248 1,519 2,494 2,989
Interest cost 1,101 1,092 2,202 2,147
Expected return on plan assets (1,303) (1,290) (2,601) (2,533)
Amortization of prior service cost (credit) (4) (15) (9) (29)
Amortization of actuarial loss 638 648 1,278 1,272
Pension expense for defined benefit plans $ 1,680 $ 1,954 $ 3,364 $ 3,846