PENSION AND POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Nov. 24, 2013

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

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 24, 2013			November 25, 2012			November 24, 2013			November 25, 2012
Service cost	$	22.2		$	20.1		$	44.5		$	40.3
Interest cost	37.8			36.6			75.6			73.2
Expected return on plan assets	(63.2		)	(52.2		)	(126.4		)	(104.5		)
Amortization of prior service cost	0.9			0.8			1.8			1.6
Curtailment loss	—			—			—			0.8
Benefit cost — Company plans	(2.3		)	5.3			(4.5		)	11.4
Pension benefit cost — multi-employer plans	3.6			2.2			6.7			4.3
Total benefit cost	$	1.3		$	7.5		$	2.2		$	15.7

	Postretirement Benefits
	Thirteen weeks ended						Twenty-six weeks ended
	November 24, 2013			November 25, 2012			November 24, 2013			November 25, 2012
Service cost	$	0.2		$	0.1		$	0.4		$	0.2
Interest cost	2.4			2.5			4.8			5.0
Amortization of prior service cost	(1.8		)	(2.1		)	(3.6		)	(4.2		)
Recognized net actuarial loss	1.7			1.5			3.4			3.0
Total cost	$	2.5		$	2.0		$	5.0		$	4.0