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Restructuring Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended
	May 27, 2012	Aug. 26, 2012 Network Optimization Plan	Aug. 26, 2012 Acquisition-related restructuring	Aug. 26, 2012 Administrative Efficiency Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 82.0	$ 9.9	$ 21.1
Expenses that have resulted or will result in cash outflows		24.2		19.6
Non-cash expenses		57.8		1.5
Costs Incurred and Charged to Expense	$ 2.6	$ 1.8	$ 1.6	$ 0.4

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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