Income Taxes (Interest Expense On Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
May. 31, 2015	May. 25, 2014	May. 26, 2013
Income Tax Disclosure [Abstract]
Interest expense on unrecognized tax benefits	$ 1.1	$ 0.4	$ 0.5

Amount of interest expense for an underpayment of income taxes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration