

12.	Retirement Plans

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



	Three Months Ended						Six Months Ended
	March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
Service cost	$	1.2		$	1.2		$	2.4		$	2.5
Interest cost	4.4			5.0			8.9			9.9
Expected return on plan assets	(5.7		)	(6.1		)	(11.5		)	(12.2		)
Amortization of net actuarial loss	2.4			2.1			4.7			4.2
Amortization of prior service (credit) cost	(0.2		)	(0.2		)	(0.4		)	(0.3		)
Plan settlements	1.2			0.3			1.2			0.3
Net periodic benefit cost	$	3.3		$	2.3		$	5.3		$	4.4

The net periodic benefit credit for the Company's postretirement benefit plans for the three months ended March 27, 2015 and March 28, 2014 was $0.5 million and $1.8 million, respectively, and for the six months ended March 27, 2015 and March 28, 2014 was $1.0 million and $3.6 million, respectively. The individual components of the credit were not material.

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

The Company does not anticipate making material involuntary contributions in fiscal 2015, but may elect to make voluntary contributions to its defined benefit pension plans or its postretirement benefit plans during fiscal 2015.