Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 24, 2015	Apr. 25, 2014	Apr. 26, 2013
Income (Loss) from Continuing Operations before Income Taxes, by Jurisdiction
U.S.	$ 639	$ 1,690	$ 1,806
International	2,847	2,015	2,445
Income from operations before income taxes	3,486	3,705	4,251
Current tax expense:
U.S.	1,128	532	509
International	502	248	219
Total current tax expense	1,630	780	728
Deferred tax expense (benefit):
U.S.	(705)	(175)	46
International	(114)	35	10
Net deferred tax expense (benefit)	(819)	(140)	56
Total provision for income taxes	811	640	$ 784
Deferred tax assets:
Net operating loss, capital loss, and credit carryforwards	5,912	487
Other accrued liabilities	585	205
Accrued compensation	330	201
Pension and post-retirement benefits	449	194
Stock-based compensation	418	171
Other	303	171
Inventory	171	118
Federal and state benefit on uncertain tax positions	296	79
Gross deferred tax assets	8,464	1,626
Valuation allowance	(5,607)	(397)
Total deferred tax assets	2,857	1,229
Deferred tax liabilities:
Intangible assets	(5,393)	(652)
Basis impairment	(204)	(225)
Realized loss on derivative financial instruments	(112)	(110)
Other	(96)	(24)
Accumulated depreciation	(217)	(20)
Unrealized gain on available-for-sale securities and derivative financial instruments	(160)	0
Total deferred tax liabilities	(6,182)	(1,031)
Prepaid income taxes	427	320
Income tax receivables	188	113
Tax (liabilities)/assets, net	(2,710)	631
Reported as (after jurisdictional netting):
Tax assets	1,335	736
Long-term tax assets	774	300
Deferred tax liabilities	(119)	(19)
Long-term deferred tax liabilities	$ (4,700)	$ (386)
Effective Income Tax Rate Reconciliation
U.S. Federal statutory tax rate	35.00%	35.00%	35.00%
Increase (decrease) in tax rate resulting from:
U.S. state taxes, net of Federal tax benefit	0.80%	0.60%	0.50%
Research and development credit	(0.70%)	(0.50%)	(1.10%)
Domestic production activities	(0.40%)	(0.40%)	(0.30%)
International	(24.30%)	(17.70%)	(16.70%)
Puerto Rico Excise Tax	(1.70%)	(1.60%)	(1.30%)
Impact of non-recurring adjustments	13.30%	5.60%	2.00%
Reversal of excess tax accruals	(0.00%)	(1.90%)	(0.00%)
Other, net	1.30%	(1.80%)	0.30%
Effective tax rate	23.30%	17.30%	18.40%
Unrecognized Tax Benefits Reconciliation
Gross unrecognized tax benefits at begining of fiscal year	$ 1,172	$ 1,068	$ 917
Gross increases:
Prior year tax positions	331	64	12
Current year tax positions	231	166	169
Acquisitions	1,199	0	0
Gross decreases:
Prior year tax positions	(40)	(58)	(21)
Settlements	(33)	(66)	(6)
Statute of limitation lapses	0	(2)	(3)
Gross unrecognized tax benefits at end of fiscal year	2,860	1,172	1,068
Cash advance paid in connection with proposed settlements	(378)	0	0
Gross unrecognized tax benefits at end of fiscal year, net of cash advance	$ 2,482	$ 1,172	$ 1,068