Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2023 |
Jun. 30, 2022 |
Jun. 30, 2023 |
Jun. 30, 2022 |
Jul. 25, 2023 |
Oct. 31, 2022 |
|
| Equity, Class of Treasury Stock [Line Items] | ||||||
| Share repurchase program | $ 12,000 | |||||
| Share repurchase programs authorized | $ 8,800 | $ 8,800 | ||||
| Dividends paid | $ 937 | $ 798 | $ 2,800 | $ 2,400 | ||
| Subsequent Event | ||||||
| Equity, Class of Treasury Stock [Line Items] | ||||||
| Quarterly cash dividend (in dollars per share) | $ 0.45 | |||||