Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Special (Gains) Charges, Net and Certain Litigation Charges, Net , Certain Litigation Charges, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 24, 2015	Apr. 25, 2014	Apr. 26, 2013
Loss Contingencies
Certain litigation charges, net	$ 42	$ 770	$ 245
Litigation with Edwards Lifesciences Corporation
Loss Contingencies
Certain litigation charges, net		589
INFUSE Product Liability Litigation
Loss Contingencies
Certain litigation charges, net	$ 37	$ 140