PENSION AND POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Nov. 25, 2012

Components of Pension Benefit and Other Postretirement Benefit Costs

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