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Shareholders' Equity (Deficit) - Narrative (Details) - USD ($) shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended | 138 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 28, 2022 | Nov. 30, 2020 | Jun. 30, 2017 | Nov. 30, 2014 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Apr. 30, 2012
Equity [Abstract] |  |  |  |  |  |  |  |  |  |
Share repurchase authorization amount |  |  |  |  | $ 27,500,000,000 |  | $ 27,500,000,000 |  | $ 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 |  |  |  |  | $ 4,100,000,000 |  | $ 4,100,000,000 |  | $ 4,100,000,000 |
Shares purchased (in shares) |  |  |  |  | 2.6 | 4.2 | 6.1 | 8.7 | 166.7 |
Total cost of shares purchased |  |  |  |  | $ 850,000,000 | $ 1,200,000,000 | $ 1,950,000,000 | $ 2,528,000,000 | $ 23,400,000,000 |
Antidilutive securities excluded from computation of earnings per share (in shares) |  |  |  |  | 0.0 | 1.0 | 0.0 | 0.9 |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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