Advertising Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Apr. 29, 2012	Apr. 27, 2011	Apr. 28, 2010
Advertising Costs [Abstract]
Advertising expenses including production and communication costs	$ 442.0	$ 369.6	$ 375.8
Advertising expense reduction of revenue	151.5	119.0	108.9
Advertising expense selling general and adminstrative expense	$ 290.5	$ 250.6	$ 266.9

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

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

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