Summary of Significant Accounting Policies (Tables)

3 Months Ended

Aug. 28, 2011

Summary of Significant Accounting Policies [Abstract]

Summary of income tax expense (benefit) on components of other comprehensive income (loss)

	Thirteen weeks ended
	August 28,			August 29,
	2011			2010
Net derivative adjustment	$	(18.8	)	$	—
Unrealized losses on available-for-sale securities		(0.1	)		(0.1	)
Pension and postretirement healthcare liabilities		3.7			1.5
	$	(15.2	)	$	1.4