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v3.21.2

Condensed Consolidated Statements of Shareholders' Equity (Parentheticals) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020
Accounting Standards Update [Extensible List] | Accounting Standards Update 2016-13 |  |  |  |  |
Treasury shares held in trust (in shares) | 1 | 1 | 1 | 1 | 1 | 1
Treasury share held in trust | $ 29 | $ 29 | $ 29 | $ 29 | $ 29 | $ 29
Common stock | 17 | 17 | $ 17 | 17 | $ 17 | $ 17
Decrease in retained earnings |  | $ (53,331) |  | $ (49,640) |  |
Accounting Standards Update 2016-13 |  |  |  |  |  |
Decrease in retained earnings | $ (3) |  |  |  |  |

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