Acquisitions - Pro Forma Results (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 25, 2012	Nov. 27, 2011
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Pro forma net sales	$ 3,735.5	$ 3,697.7	$ 7,088.3	$ 7,039.3
Pro forma net income	$ 216.5	$ 195.9	$ 459.7	$ 303.0
Pro forma net income from continuing operations per share-basic	$ 0.52	$ 0.47	$ 1.13	$ 0.73
Pro forma net income from continuing operations per share-diluted	$ 0.51	$ 0.47	$ 1.12	$ 0.72