Employee Benefit Plans (Tables)

6 Months Ended

Mar. 28, 2020

Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]

Net Periodic Benefit Costs

Net periodic benefit costs for our defined benefit pension plans are as follows:

	Three Months Ended						Six Months Ended
	March 28, 2020			March 30, 2019			March 28, 2020			March 30, 2019
U.S. Plans
Service cost	$	5,758		$	5,251		$	11,517		$	10,502
Interest cost	7,649			9,231			15,298			18,462
Expected return on plan assets	(11,021		)	(11,264		)	(22,042		)	(22,528		)
Amortization of prior service cost (credit)	34			47			67			93
Amortization of actuarial loss	6,329			6,661			12,658			13,321
Pension expense for U.S. defined benefit plans	$	8,749		$	9,926		$	17,498		$	19,850
Non-U.S. Plans
Service cost	$	1,666		$	1,248		$	3,337		$	2,494
Interest cost	695			1,101			1,392			2,202
Expected return on plan assets	(1,135		)	(1,303		)	(2,274		)	(2,601		)
Amortization of prior service cost (credit)	—			(4		)	—			(9		)
Amortization of actuarial loss	1,212			638			2,428			1,278
Pension expense for non-U.S. defined benefit plans	$	2,438		$	1,680		$	4,883		$	3,364

Defined Contribution Plan Disclosures

Pension expense for our defined contribution plans consists of:

	Three Months Ended				Six Months Ended
	March 28, 2020		March 30, 2019		March 28, 2020		March 30, 2019
U.S. defined contribution plans	$	7,206	$	4,713	$	12,604	$	9,327
Non-U.S. defined contribution plans	1,388		1,340		2,790		2,536
Total pension expense for defined contribution plans	$	8,594	$	6,053	$	15,394	$	11,863