Restructuring Activities (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended					36 Months Ended	12 Months Ended	18 Months Ended
	May 27, 2012 Acquisition-related restructuring [Member]	May 27, 2012 Administrative efficiency restructuring plan [Member]	May 27, 2012 2010 plan [Member]	May 29, 2011 2010 plan [Member]	May 30, 2010 2010 plan [Member]	May 31, 2012 2010 plan [Member]	May 27, 2012 Network optimization plan [Member]	May 27, 2012 Network optimization plan [Member]
Restructuring Activities (Textual) [Abstract]
Restructuring and related cost, expected cost	$ 18.4	$ 18.8	$ 67.5			$ 67.5	$ 83.2
Restructuring and Related Cost, Incurred Cost	4.5	16.7					41.8	72.4
Expenses that have resulted or will result in cash outflows	9.9	17.3	28.3				26.0
Non-cash expenses	8.5	1.5	39.2				57.2
Costs incurred and charged to expense	$ 4.3	$ 16.3	$ 2.6	$ 25.7	$ 39.2		$ 11.3