Stockholders' Equity - Summary of Activities Related to Stock Repurchase Program (Detail) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	183 Months Ended
Jul. 27, 2018 USD ($) $ / shares shares	Jul. 27, 2018 USD ($) $ / shares shares
Equity [Abstract]
Number of shares repurchased \| shares	7	291
Average price per share \| $ / shares	$ 74.37	$ 34.79
Aggregate purchase price	$ 500	$ 10,100
Remaining authorization at end of period	$ 3,500	$ 3,500

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Period Type:	duration