Retirement Plans

9 Months Ended

Feb. 23, 2014

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

Retirement Plans

Components of net periodic benefit cost are as follows:

	Defined Benefit Plans
	Three Months Ended						Nine Months Ended
(in millions)	February 23, 2014			February 24, 2013			February 23, 2014			February 24, 2013
Service cost	$	1.1		$	1.2		$	3.3		$	3.6
Interest cost	2.6			2.5			7.7			7.5
Expected return on plan assets	(4.3		)	(4.9		)	(12.9		)	(14.6		)
Recognized net actuarial loss	2.2			2.2			6.8			6.6
Net periodic benefit cost	$	1.6		$	1.0		$	4.9		$	3.1

	Postretirement Benefit Plan
	Three Months Ended				Nine Months Ended
(in millions)	February 23, 2014		February 24, 2013		February 23, 2014		February 24, 2013
Service cost	$	0.2	$	0.2	$	0.6	$	0.6
Interest cost	0.4		0.3		1.0		0.9
Net periodic benefit cost	$	0.6	$	0.5	$	1.6	$	1.5