PENSION AND POSTRETIREMENT BENEFITS (Tables)

3 Months Ended

Aug. 29, 2021

Compensation And Retirement Disclosure [Abstract]

Components of Pension and Postretirement Plan Costs (Benefits)

Components of pension and postretirement plan costs (benefits) are:

	Pension Plans
	Thirteen weeks ended
	August 29, 2021			August 30, 2020
Service cost	$	2.7		$	3.1
Interest cost		20.8			21.7
Expected return on plan assets		(36.4	)		(35.0	)
Amortization of prior service cost		0.5			0.6
Pension cost (benefit) — Company plans		(12.4	)		(9.6	)
Pension cost (benefit) — multi-employer plans		1.9			1.8
Total pension cost (benefit)	$	(10.5	)	$	(7.8	)

	Postretirement Plans
	Thirteen weeks ended
	August 29, 2021			August 30, 2020
Service cost	$	—		$	0.1
Interest cost		0.3			0.3
Amortization of prior service cost (benefit)		(0.5	)		(0.5	)
Recognized net actuarial gain		(0.8	)		(0.9	)
Total postretirement cost (benefit)	$	(1.0	)	$	(1.0	)