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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions |  | 3 Months Ended | 9 Months Ended | 153 Months Ended
--- | --- | --- | --- | ---
Feb. 17, 2016 | Jan. 29, 2016 | Jan. 23, 2015 | Jan. 29, 2016 | Jan. 23, 2015 | Jan. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation expense related to equity awards |  | $ 341,000,000 |  | $ 341,000,000 |  | $ 341,000,000
Unrecognized compensation expense will be amortized on a straight-line basis over a weighted-average remaining period, in years |  |  |  | 1 year 10 months 24 days |  |
Stock repurchase program, authorized amount |  | $ 9,600,000,000 |  | $ 9,600,000,000 |  | $ 9,600,000,000
Allocation of purchase price of share repurchases |  |  |  | $ 698,000,000 |  |
Repurchase of common stock, shares |  |  |  | 23 |  | 237
Average price of common stock repurchased under repurchase program |  |  |  | $ 30.75 |  | $ 33.22
Aggregate purchase price of common stock authorized under repurchase program |  |  |  | $ 698,000,000 | $ 919,000,000 | $ 7,900,000,000
Cash dividends declared, per common share |  | $ 0.180 | $ 0.165 | $ 0.540 | $ 0.495 |
Subsequent Event |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Cash dividends declared, per common share | $ 0.18 |  |  |  |  |
Cash dividend payable date | Apr. 27, 2016 |  |  |  |  |
Cash dividend record date | Apr. 08, 2016 |  |  |  |  |
Additional Paid-in Capital |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Allocation of purchase price of share repurchases |  |  |  | $ 534,000,000 |  |
Retained Earnings |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Allocation of purchase price of share repurchases |  |  |  | $ 164,000,000 |  |
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% |  |
Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage of Common stock issued to settle PBRSUs of target shares granted |  |  |  | 200.00% |  |
Performance Based Restricted Stock Unit |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
RSUs grant date fair value |  | $ 20,000,000 |  | $ 20,000,000 |  | $ 20,000,000
Performance Based Restricted Stock Unit | PBRSU One |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 2 years |  |
Performance Based Restricted Stock Unit | PBRSU Two |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |
Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
RSUs granted, Number of Shares |  |  |  | 6 |  |
Restricted Stock Units | RSU One |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting rate |  |  |  | 25.00% |  |
Award granted, vesting period |  |  |  | 4 years |  |
Restricted Stock Units | RSU Two |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting rate |  |  |  | 50.00% |  |
Award granted, vesting period |  |  |  | 2 years |  |
RSUs granted, Number of Shares |  |  |  | 4 |  |

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