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Employee Benefit Plans | 6 Months Ended
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Mar. 30, 2019
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract] |
Employee Benefit Plans | Employee Benefit Plans Net periodic benefit costs for our defined benefit pension plans are as follows:
|  | Three Months Ended |  | Six Months Ended
|  | March 30, 2019 |  | March 31, 2018 |  | March 30, 2019 |  | March 31, 2018
U.S. Plans |  |  |  |  |  |  |  |
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 U.S. defined benefit plans |  | $ | 8,224 |  |  | $ | 7,080 |  |  | $ | 16,447 |  |  | $ | 14,160 |
Non-U.S. Plans |  |  |  |  |  |  |  |
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 non-U.S. defined benefit plans |  | $ | 1,680 |  |  | $ | 1,954 |  |  | $ | 3,364 |  |  | $ | 3,846 |
Pension expense for our defined contribution plans consists of:
|  | Three Months Ended |  | Six Months Ended
|  | March 30, 2019 |  | March 31, 2018 |  | March 30, 2019 |  | March 31, 2018
U.S. defined contribution plans |  | $ | 4,713 |  |  | $ | 4,136 |  |  | $ | 9,327 |  |  | $ | 8,108 |
Non-U.S. defined contribution plans |  | 1,340 |  |  | 1,353 |  |  | 2,536 |  |  | 2,570 |
Total pension expense for defined contribution plans |  | $ | 6,053 |  |  | $ | 5,489 |  |  | $ | 11,863 |  |  | $ | 10,678 |

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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