Retirement Plans (Tables)

9 Months Ended

Feb. 24, 2019

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 24, 2019			February 25, 2018			February 24, 2019			February 25, 2018
Interest cost	$	2.4		$	2.1		$	7.0		$	6.4
Expected return on plan assets	(2.8		)	(3.0		)	(8.4		)	(9.0		)
Recognized net actuarial loss	0.6			0.7			1.9			2.1
Net periodic benefit (credit) cost	$	0.2		$	(0.2	)	$	0.5		$	(0.5	)

	Postretirement Benefit Plan
	Three Months Ended						Nine Months Ended
(in millions)	February 24, 2019			February 25, 2018			February 24, 2019			February 25, 2018
Service cost	$	—		$	—		$	—		$	0.1
Interest cost	0.2			0.2			0.6			0.5
Amortization of unrecognized prior service credit	(1.2		)	(1.2		)	(3.6		)	(3.6		)
Recognized net actuarial loss	0.4			0.4			1.2			1.3
Net periodic benefit (credit) cost	$	(0.6	)	$	(0.6	)	$	(1.8	)	$	(1.7	)