Income Taxes , Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Apr. 27, 2018	Apr. 28, 2017
Deferred tax assets:
Net operating loss, capital loss, and credit carryforwards	$ 7,463	$ 6,800
Other accrued liabilities	410	658
Accrued compensation	209	427
Pension and post-retirement benefits	256	456
Stock-based compensation	190	278
Other	332	349
Inventory	207	277
Federal and state benefit on uncertain tax positions	67	191
Unrealized loss on available-for-sale securities and derivative financial instruments	93	0
Gross deferred tax assets	9,227	9,436
Valuation allowance	(7,166)	(6,311)
Total deferred tax assets	2,061	3,125
Deferred tax liabilities:
Intangible assets	(1,697)	(4,943)
Realized loss on derivative financial instruments	(69)	(112)
Other	(143)	(74)
Accumulated depreciation	(38)	(149)
Unrealized gain on available-for-sale securities and derivative financial instruments	0	(18)
Outside basis difference of subsidiaries	(131)	(112)
Total deferred tax liabilities	(2,078)	(5,408)
Prepaid income taxes	406	475
Income tax receivables	315	218
Tax assets (liabilities), net	704
Tax assets (liabilities), net		(1,590)
Reported as (after valuation allowance and jurisdictional netting):
Other current assets	662	545
Tax assets	1,465	1,550
Deferred tax liabilities	(1,423)	(2,978)
Noncurrent liabilities held for sale	$ 0	$ (707)