Restructuring Charges (Details) - Enterprise Excellence - USD ($) $ in Millions	12 Months Ended
Apr. 24, 2020	Apr. 26, 2019	Apr. 27, 2018
Changes in Restructuring Reserves
Beginning balance	$ 122	$ 29	$ 0
Charges	462	424	96
Cash payments	(427)	(314)	(67)
Settled non-cash	(24)	(17)
Accrual adjustments	(21)
Ending balance	112	122	29
Employee Termination Benefits
Changes in Restructuring Reserves
Beginning balance	101	27	0
Charges	129	192	35
Cash payments	(128)	(118)	(8)
Settled non-cash	0	0
Accrual adjustments	(13)
Ending balance	89	101	27
Associated Costs
Changes in Restructuring Reserves
Beginning balance	9	2	0
Charges	300	193	61
Cash payments	(290)	(186)	(59)
Settled non-cash	0	0
Accrual adjustments	0
Ending balance	19	9	2
Asset Write-downs
Changes in Restructuring Reserves
Beginning balance	0	0	0
Charges	24	17	0
Cash payments	0	0	0
Settled non-cash	(24)	(17)
Accrual adjustments	0
Ending balance	0	0	0
Other Costs
Changes in Restructuring Reserves
Beginning balance	12	0	0
Charges	9	22	0
Cash payments	(9)	(10)	0
Settled non-cash	0	0
Accrual adjustments	(8)
Ending balance	$ 4	$ 12	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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