Shareholders' Equity - Common Stock Repurchase Summary (Details) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Class of Stock [Line Items] | ||||
| Total purchase price of shares repurchased and retired | $ 9,914 | $ 114 | $ 17,593 | $ 6,762 |
| Common Stock | ||||
| Class of Stock [Line Items] | ||||
| Total number of shares repurchased and retired (in shares) | 248 | 452 | ||
| Total purchase price of shares repurchased and retired | $ 9,900 | $ 17,600 | ||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of shares that have been repurchased and retired during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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