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Restructuring (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended	9 Months Ended	15 Months Ended
	Feb. 26, 2012 Administrative efficiency restructuring plan [Member]	Feb. 26, 2012 Administrative efficiency restructuring plan [Member]	Feb. 26, 2012 2010 plan [Member]	Feb. 26, 2012 2010 plan [Member]	May 29, 2011 2010 plan [Member]	May 30, 2010 2010 plan [Member]	Feb. 26, 2012 Network optimization plan [Member]	Feb. 26, 2012 Network optimization plan [Member]	Feb. 26, 2012 Network optimization plan [Member]
Restructuring (Textual) [Abstract]
Restructuring and related cost, expected cost		$ 18.5		$ 67.5				$ 74.7
Restructuring and Related Cost, Incurred Cost	1.6	15.0					6.6	30.8	61.4
Expenses that have resulted or will result in cash outflows		17.1		28.3				22.9
Non-cash expenses		1.4		39.2				51.8
Costs incurred related to restructuring plan					25.7	39.2
Restructuring and related pre tax expenses			$ 0.2	$ 2.5

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

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- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of 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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