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Goodwill and Other Intangible Assets, Net - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 30, 2015	Oct. 24, 2014	Oct. 30, 2015	Oct. 24, 2014	Apr. 24, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Purchase accounting adjustments, net			$ 20,000,000
Amortization expense	$ 483,000,000	$ 89,000,000	964,000,000	$ 176,000,000
Carrying amount of goodwill	41,274,000,000		41,274,000,000		$ 40,530,000,000
Goodwill impairment	0	0	0	0
Carrying amount of amortizable intangible assets	26,962,000,000		26,962,000,000		27,381,000,000
Impairment of amortizable intangible assets	0	0	0	0
Indefinite-lived Intangible Assets [Line Items]
Carrying amount of non-amortizable intangible assets	769,000,000		769,000,000		720,000,000
IPR&D [Member]
Indefinite-lived Intangible Assets [Line Items]
Carrying amount of non-amortizable intangible assets	769,000,000		769,000,000		$ 470,000,000
Impairment of non-amortizable intangible assets	$ 0	$ 0	$ 0	$ 0

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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