PENSION AND POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Nov. 29, 2015

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 are (includes amounts related to discontinued operations):

	Pension Benefits
	Thirteen weeks ended						Twenty-six weeks ended
	November 29, 2015			November 23, 2014			November 29, 2015			November 23, 2014
Service cost	$	23.8		$	22.2		$	47.6		$	44.3
Interest cost	41.0			40.3			82.0			80.7
Expected return on plan assets	(66.8		)	(67.0		)	(133.7		)	(134.0		)
Amortization of prior service cost	0.7			0.9			1.4			1.8
Special termination benefits	—			—			—			6.9
Benefit cost — Company plans	(1.3		)	(3.6		)	(2.7		)	(0.3		)
Pension benefit cost — multi-employer plans	4.1			3.5			6.4			6.7
Total benefit cost	$	2.8		$	(0.1	)	$	3.7		$	6.4

	Postretirement Benefits
	Thirteen weeks ended						Twenty-six weeks ended
	November 29, 2015			November 23, 2014			November 29, 2015			November 23, 2014
Service cost	$	0.1		$	0.2		$	0.2		$	0.3
Interest cost	1.9			2.5			3.9			5.0
Amortization of prior service benefit	(2.0		)	(1.9		)	(4.0		)	(3.9		)
Recognized net actuarial loss	—			0.8			—			1.7
Total cost	$	—		$	1.6		$	0.1		$	3.1