Retirement Plans

3 Months Ended

Dec. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

12. Retirement Plans

The net periodic benefit cost for the Company's defined benefit pension plans was as follows:

	Three Months Ended
	December 30, 2016			December 25, 2015
Service cost	$	0.2		$	0.4
Interest cost	0.5			3.5
Expected return on plan assets	(0.6		)	(4.2		)
Amortization of net actuarial loss	1.0			2.6
Plan settlements	45.0			—
Net periodic benefit cost	$	46.1		$	2.3

The net periodic benefit credit for the Company's postretirement benefit plans was approximately zero for the three months ended both December 30, 2016 and December 25, 2015.

Net periodic benefit cost for the Company's defined benefit pension plans and postretirement benefit plans was included within cost of sales; research and development; and selling, general and administrative ("SG&A") expenses on the unaudited condensed consolidated statements of income.

Pension Plan Termination

On March 31, 2016, the Company terminated six of its previously frozen U.S. pension plans. During the three months ended December 30, 2016, the Company made lump sum distributions of $125.5 million from the terminated pension plans, based upon employee elections. These disbursements resulted in a $45.0 million charge, included within SG&A expenses, associated with the recognition of previously deferred pension related losses upon lump sum distribution to employees under our pension plan termination. The Company continues to pursue settlement of remaining obligations under these plans, the ultimate settlement obligation and future settlement charges will depend upon the nature of participant settlements and the prevailing market conditions. Final settlement of the remaining pension obligations under these plans is anticipated in the first half of calendar 2017.