Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Apr. 24, 2020	Apr. 26, 2019
Deferred tax assets:
Net operating loss, capital loss, and credit carryforwards	$ 6,432	$ 6,574
Other accrued liabilities	390	389
Accrued compensation	285	315
Pension and post-retirement benefits	350	300
Stock-based compensation	136	162
Other	338	339
Inventory	191	194
Lease obligations	101
Federal and state benefit on uncertain tax positions	96	83
Interest limitation	236	111
Unrealized loss on available-for-sale securities and derivative financial instruments	0	17
Gross deferred tax assets	8,555	8,484
Valuation allowance	(5,482)	(6,300)
Total deferred tax assets	3,073	2,184
Deferred tax liabilities:
Intangible assets	(1,017)	(1,614)
Realized loss on derivative financial instruments	(65)	(70)
Other	(110)	(152)
Right of use leases	(97)
Unrealized gain on available-for-sale securities and derivative financial instruments	(12)	0
Accumulated depreciation	(87)	(38)
Outside basis difference of subsidiaries	(77)	(119)
Total deferred tax liabilities	(1,465)	(1,993)
Prepaid income taxes	449	363
Income tax receivables	381	335
Tax assets, net	2,438	889
Reported as (after valuation allowance and jurisdictional netting):
Other current assets	780	648
Tax assets	2,832	1,519
Deferred tax liabilities	$ (1,174)	$ (1,278)