Retirement Plans (Tables)

9 Months Ended

Feb. 26, 2012

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 26, 2012			February 27, 2011			February 26, 2012			February 27, 2011
Service cost	$	1.4		$	1.4		$	4.1		$	4.4
Interest cost	2.2			2.4			6.7			7.2
Expected return on plan assets	(4.5		)	(4.0		)	(13.4		)	(12.1		)
Unrecognized prior service cost	—			0.1			—			0.1
Recognized net actuarial loss	1.6			1.1			4.7			3.4
Net periodic benefit cost	$	0.7		$	1.0		$	2.1		$	3.0

	Postretirement Benefit Plan
	Three Months Ended				Nine Months Ended
(in millions)	February 26, 2012		February 27, 2011		February 26, 2012		February 27, 2011
Service cost	$	0.2	$	0.2	$	0.6	$	0.7
Interest cost	0.3		0.5		1.0		1.7
Recognized net actuarial loss	—		0.4		—		1.0
Net periodic benefit cost	$	0.5	$	1.1	$	1.6	$	3.4