Consolidated Statements of Earnings (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
Aug. 26, 2012	Aug. 28, 2011
Income Statement [Abstract]
Total cost of sales, restaurant depreciation and amortization	$ 87.4	$ 78.4
Losses from discontinued operations, tax benefit	$ 0.1	$ 0.1

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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