Stockholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 18, 2019	Sep. 20, 2016
Share Repurchases [Line Items]
Amount of shares repurchased to settle employee tax withholding related to vesting of stock awards	$ 967,000,000	$ 1,100,000,000
Share Repurchase Program 2016
Share Repurchases [Line Items]
Amount available for repurchase under the share repurchase program approved by the company's Board of Directors				$ 40,000,000,000.0
Unused amount of share repurchase program	$ 7,400,000,000
Share Repurchase Program 2019
Share Repurchases [Line Items]
Amount available for repurchase under the share repurchase program approved by the company's Board of Directors			$ 40,000,000,000.0