Restructuring - Liabilities for Initiatives and Changes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	6 Months Ended
	May 27, 2012	Nov. 25, 2012 Acquisition-Related Restructuring [Member]	Nov. 25, 2012 Administrative Efficiency Restructuring Plan [Member]	Nov. 25, 2012 Network Optimization Plan [Member]	Nov. 25, 2012 Severance and Related Costs [Member] Acquisition-Related Restructuring [Member]	Nov. 25, 2012 Severance and Related Costs [Member] Administrative Efficiency Restructuring Plan [Member]	Nov. 25, 2012 Severance and Related Costs [Member] Network Optimization Plan [Member]	Nov. 25, 2012 Plan implementation costs [Member] Administrative Efficiency Restructuring Plan [Member]	Nov. 25, 2012 Plan implementation costs [Member] Network Optimization Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance		$ 4.3	$ 2.4	$ 7.8	$ 4.3	$ 2.1	$ 7.0	$ 0.3	$ 0.8
Costs Incurred and Charged to Expense	67.3	4.0	1.1	3.0	4.0	1.0	0.8	0.1	2.2
Costs Paid or Otherwise Settled		(3.7)	(2.4)	(6.7)	(3.7)	(2.0)	(3.8)	(0.4)	(2.9)
Changes in Estimates			(0.1)	(0.9)		(0.1)	(0.9)
Ending balance		$ 4.6	$ 1.0	$ 3.2	$ 4.6	$ 1.0	$ 3.1		$ 0.1