Retirement Plans (Tables)

9 Months Ended

Feb. 23, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

Components of net periodic benefit cost are as follows:

	Defined Benefit Plans
	Three Months Ended					Nine Months Ended
(in millions)	February 23, 2020		February 24, 2019			February 23, 2020			February 24, 2019
Interest cost	$	—	$	2.4		$	3.2		$	7.0
Expected return on plan assets	—		(2.8		)	(4.0		)	(8.4		)
Pension settlement expense	—		—			147.1			—
Recognized net actuarial loss	0.1		0.6			1.8			1.9
Net periodic benefit cost	$	0.1	$	0.2		$	148.1		$	0.5

	Postretirement Benefit Plan
	Three Months Ended						Nine Months Ended
(in millions)	February 23, 2020			February 24, 2019			February 23, 2020			February 24, 2019
Interest cost	$	0.2		$	0.2		$	0.5		$	0.6
Amortization of unrecognized prior service credit	(1.2		)	(1.2		)	(3.5		)	(3.6		)
Recognized net actuarial loss	0.4			0.4			1.1			1.2
Net periodic benefit credit	$	(0.6	)	$	(0.6	)	$	(1.9	)	$	(1.8	)