Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	6 Months Ended
	May 27, 2012	Nov. 25, 2012 Network Optimization Plan [Member]	Nov. 25, 2012 Acquisition-Related Restructuring [Member]	Nov. 25, 2012 Administrative Efficiency Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 81.4	$ 10.5	$ 19.2
Expenses that have resulted or will result in cash outflows		25.4	10.2	17.3
Non-cash expenses		56.0	0.3	1.9
Costs Incurred and Charged to Expense	$ 67.3	$ 3.0	$ 4.0	$ 1.1