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Stockholders' Equity - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 14, 2021 | Sep. 18, 2019
Share Repurchases [Line Items] |  |  |  |  |  |
Amount of shares repurchased to settle employee tax withholding related to vesting of stock awards | $ 1,200,000,000 | $ 785,000,000 | $ 2,700,000,000 | $ 2,300,000,000 |  |
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
Share Repurchase Program 2021 |  |  |  |  |  |
Share Repurchases [Line Items] |  |  |  |  |  |
Amount available for repurchase under the share repurchase program approved by the company's Board of Directors |  |  |  |  | $ 60,000,000,000.0 |
Unused amount of share repurchase program | $ 56,300,000,000 |  | $ 56,300,000,000 |  |  |

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