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Shareholders' Equity - Repurchases (Details) - 2016 Repurchase Program - USD ($) | Dec. 31, 2020 | Nov. 02, 2016
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Equity, Class of Treasury Stock [Line Items] |  |
Authorized |  | $ 15,000,000,000.0
Remaining as of December 31, 2020 | $ 13,900,000,000 |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Details
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