Summary of Significant Accounting Policies (Tables)

6 Months Ended

Nov. 27, 2011

Summary of Significant Accounting Policies [Abstract]

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

	Thirteen weeks ended					Twenty-six weeks ended
	November 27, 2011			November 28, 2010		November 27, 2011			November 28, 2010
Net derivative adjustment	$	(28.5	)	$	0.1	$	(47.3	)	$	0.1
Unrealized gains (losses) on available-for-sale securities		—			0.1		(0.1	)		—
Pension and postretirement healthcare liabilities		14.4			1.4		18.1			2.9
	$	(14.1	)	$	1.6	$	(29.3	)	$	3.0