Shareholders' Equity (Deficit) - Narrative (Details) - USD ($) shares in Millions |
1 Months Ended | 3 Months Ended | 138 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Feb. 28, 2022 |
Nov. 30, 2020 |
Jun. 30, 2017 |
Nov. 30, 2014 |
Mar. 31, 2024 |
Mar. 31, 2023 |
Sep. 30, 2023 |
Apr. 30, 2012 |
|
| Equity [Abstract] | ||||||||
| Share repurchase authorization amount | $ 27,500,000,000 | $ 5,000,000,000 | ||||||
| Share repurchase authorization amount, increase during period | $ 7,500,000,000 | $ 5,000,000,000 | $ 5,000,000,000 | $ 5,000,000,000 | ||||
| Share repurchase, remaining authorized repurchase amount | $ 3,100,000,000 | |||||||
| Shares purchased (in shares) | 0.8 | 1.8 | 169.9 | |||||
| Total cost of shares purchased | $ 250,000,000 | $ 550,000,000 | $ 24,400,000,000 | |||||
| Antidilutive securities excluded from computation of earnings per share (in shares) | 0.1 | 0.0 | ||||||