Retirement Plans (Tables)

9 Months Ended

Feb. 22, 2015

Compensation and Retirement Disclosure [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 22, 2015			February 23, 2014			February 22, 2015			February 23, 2014
Service cost	$	0.4		$	1.1		$	0.9		$	3.3
Interest cost	2.5			2.6			7.5			7.7
Expected return on plan assets	(3.8		)	(4.3		)	(11.4		)	(12.9		)
Recognized net actuarial loss	0.6			2.2			1.9			6.8
Net periodic benefit (credit) cost	$	(0.3	)	$	1.6		$	(1.1	)	$	4.9

	Postretirement Benefit Plan
	Three Months Ended					Nine Months Ended
(in millions)	February 22, 2015			February 23, 2014		February 22, 2015			February 23, 2014
Service cost	$	0.1		$	0.2	$	0.4		$	0.6
Interest cost	—			0.4		0.8			1.0
Unrecognized prior service cost	(1.6		)	—		(1.6		)	—
Recognized net actuarial loss	0.3			—		0.6			—
Net periodic benefit (credit) cost	$	(1.2	)	$	0.6	$	0.2		$	1.6