Advertising Costs (Details) (USD $) In Millions	12 Months Ended
Apr. 27, 2011	Apr. 28, 2010	Apr. 29, 2009
Advertising Costs (Textuals) [Abstract]
Advertising expenses including production and communication costs	$ 369.9	$ 375.8	$ 303.1
Advertising expense reduction of revenue	119.0	108.9	105.3
Advertising expense selling general and adminstrative expense	$ 250.6	$ 266.9	$ 197.8

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-7

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration