Common stock capital shares reserved for future issuance decrease.

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Share based compensation arrangement by share based payment award duration of offering period.

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Share based compensation arrangement by share based payment award duration of purchase period.

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Share based compensation arrangement by share based payment award extended expiration period.

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Share based compensation arrangement by share based payment award maximum number value per employee.

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Share based compensation arrangement by share based payment award number of purchase periods.

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Share based compensation arrangement by share based payment award number of shares authorized per participant.

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Share based compensation arrangement by share based payment award vesting period description.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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The cash outflow to reacquire common stock during the period.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Discount rate from fair value on purchase date that participants pay for shares.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The highest quantity of shares an employee can purchase under the plan per period.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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Stockholders' Equity - Additional Information (Detail)			1 Months Ended	12 Months Ended			203 Months Ended
Stockholders' Equity - Additional Information (Detail)	May 26, 2020 $ / shares	Sep. 12, 2019 shares	Aug. 31, 2019	Apr. 24, 2020 USD ($) Period $ / shares shares	Apr. 26, 2019 USD ($) $ / shares shares	Apr. 27, 2018 USD ($) $ / shares shares	Apr. 24, 2020 USD ($) $ / shares shares	Apr. 28, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to equity awards \| $				$ 280,000,000			$ 280,000,000
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years				2 years 1 month 6 days
Stock repurchase program, authorized amount \| $				$ 13,600,000,000			$ 13,600,000,000
Repurchase of common stock, shares				25,000,000	29,000,000	15,000,000	338,000,000
Average price of common stock repurchased under repurchase program \| $ / shares				$ 56.34	$ 72.87	$ 51.57	$ 38.86
Aggregate purchase price of common stock authorized under repurchase program \| $				$ 1,411,000,000	$ 2,111,000,000	$ 794,000,000	$ 13,100,000,000
Preferred stock, shares authorized				5,000,000	5,000,000		5,000,000
Preferred stock, shares issued				0	0		0
Preferred stock, shares outstanding				0	0		0
Cash dividends declared, per common share \| $ / shares				$ 1.92	$ 1.60	$ 0.80
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividends declared, per common share \| $ / shares	$ 0.48
Cash dividend payable date	Jul. 29, 2020
Cash dividend record date	Jul. 10, 2020
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Common stock issued to settle PBRSUs of target shares granted				0.00%	0.00%	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding				1,000,000	1,000,000		1,000,000
Percentage of Common stock issued to settle PBRSUs of target shares granted				200.00%	200.00%	200.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding				7,000,000	8,000,000	9,000,000	7,000,000	11,000,000
Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs grant date fair value \| $				$ 18,000,000	$ 24,000,000	$ 20,000,000	$ 18,000,000
Vesting period, description				For the remaining PBRSUs granted in fiscal 2020 and 2019, the number of shares issued will depend upon our achievement against a cumulative Adjusted Operating Income (AOI) target, as defined in the grant agreements, for the three-year periods from fiscal 2020 through 2022 and fiscal 2019 through 2021, respectively.
Awards outstanding				1,000,000	1,000,000	1,000,000	1,000,000
Performance Based Restricted Stock Unit \| PBRSU One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				2 years	2 years	2 years
Performance Based Restricted Stock Unit \| PBRSU Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years	3 years	3 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock authorized		2,000,000
Shares available for grant				7,000,000			7,000,000
Share offering period for eligible employees				24 months
Number of consecutive purchase periods \| Period				4
Duration of purchase period				6 months
Percentage of discount from quoted market price, employees entitled to buy shares (ESPP)				15.00%
1999 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award extended expiration period			10 years
Decrease in number of shares reserved for issuance for every share subject to a full value award				2
Number of shares that may be granted to a participant in any calendar year				1,000,000
Maximum initial value of performance units a participant may receive \| $				$ 5,000,000
Number of performance shares a participant may receive in a calendar year				1,000,000
Additional shares of common stock authorized				4,000,000
Shares available for grant				27,000,000			27,000,000
1999 Stock Option Plan \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock, percentage				100.00%
Vesting period				4 years
Options granted period term				7 years
1999 Stock Option Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
1999 Stock Option Plan \| Restricted Stock Units \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate				25.00%
1999 Stock Option Plan \| Restricted Stock Units \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate				25.00%
1999 Stock Option Plan \| Restricted Stock Units \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate				25.00%
1999 Stock Option Plan \| Restricted Stock Units \| Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate				25.00%