PENSION AND POSTRETIREMENT BENEFITS

6 Months Ended

Nov. 25, 2012

PENSION AND POSTRETIREMENT BENEFITS

12. PENSION AND POSTRETIREMENT BENEFITS

We have defined benefit retirement plans (“plans”) for eligible salaried and hourly employees. Benefits are based on years of credited service and average compensation or stated amounts for each year of service. We also sponsor postretirement plans which provide certain medical and dental benefits (“other postretirement benefits”) to qualifying U.S. employees.

Components of pension benefit and other postretirement benefit costs included:

	Pension Benefits
	Thirteen weeks ended						Twenty-six weeks ended
	November 25, 2012			November 27, 2011			November 25, 2012			November 27, 2011
Service cost	$	20.1		$	17.1		$	40.3		$	34.2
Interest cost		36.6			37.2			73.2			74.4
Expected return on plan assets		(52.2	)		(48.9	)		(104.5	)		(97.8	)
Amortization of prior service cost		0.8			0.7			1.6			1.5
Curtailment loss		—			—			0.8			—
Benefit cost — Company plans		5.3			6.1			11.4			12.3
Pension benefit cost — multi-employer plans		2.2			2.8			4.3			4.9
Total benefit cost	$	7.5		$	8.9		$	15.7		$	17.2

	Postretirement Benefits
	Thirteen weeks ended						Twenty-six weeks ended
	November 25, 2012			November 27, 2011			November 25, 2012			November 27, 2011
Service cost	$	0.1		$	0.1		$	0.2		$	0.3
Interest cost		2.5			3.2			5.0			6.9
Expected return on plan assets		—			—			—			—
Amortization of prior service cost		(2.1	)		(3.6	)		(4.2	)		(5.8	)
Recognized net actuarial loss		1.5			2.0			3.0			3.5
Total cost	$	2.0		$	1.7		$	4.0		$	4.9

During the second quarter and first half of fiscal 2013, we contributed $6.3 million and $10.1 million, respectively, to our pension plans and contributed $6.4 million and $13.1 million, respectively, to our other postretirement plans. Based upon the current funded status of the plans and the current interest rate environment, we anticipate making further contributions of approximately $11.0 million to our pension plans for the remainder of fiscal 2013. We anticipate making further contributions of $10.5 million to our other postretirement plans during the remainder of fiscal 2013. These estimates are based on current tax laws, plan asset performance, and liability assumptions, which are subject to change.