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v3.20.4

Consolidated Statements of Shareholders' Equity (Parentheticals) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2020 | Jan. 01, 2018
Treasury shares held in trust (in shares) | 1 | 1 |  |  | 1 |
Treasury shares held in trust | $ 29 | $ 29 |  |  | $ 29 |
Common stock | 17 | 17 |  |  | 17 |
Cumulative adjustment to retained earnings as a result of new accounting standard adoption | 64,170 | $ 58,543 |  | $ 37,695 | 69,701 |
Decrease to accumulated other comprehensive income | (1,019) |  |  |  | (1,414) |
Increase to retained earnings | $ 45,108 |  |  |  | 49,640 |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201613Member | us-gaap:AccountingStandardsUpdate201602Member |  |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |
Accounting Standards Update [Extensible List] |  |  |  | us-gaap:AccountingStandardsUpdate201409Member |  |
Accounting Standards Update 2018-02 |  |  |  |  |  |
Decrease to accumulated other comprehensive income |  |  |  |  |  | $ 7
Increase to retained earnings |  |  |  |  |  | 7
Accounting Standards Update [Extensible List] |  |  |  | us-gaap:AccountingStandardsUpdate201802Member |  |
Retained Earnings |  |  |  |  |  |
Cumulative adjustment to retained earnings as a result of new accounting standard adoption | $ 45,108 | $ 40,911 |  | $ 43,556 | $ 49,640 |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Cumulative adjustment to retained earnings as a result of new accounting standard adoption | (3) | 178 | [1] | (13) |  |
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings |  |  |  |  |  |
Cumulative adjustment to retained earnings as a result of new accounting standard adoption | $ (3) | $ 178 | [1] | $ (6) |  |
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings | Accounting Standards Update 2018-02 |  |  |  |  |  |
Cumulative adjustment to retained earnings as a result of new accounting standard adoption |  |  |  |  |  | $ 13
[1] | Reflects the adoption of Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which resulted in a reduction to retained earnings of $13 million and the adoption of ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which resulted in a reduction to accumulated other comprehensive income of $7 million and an increase to retained earnings of $7 million, each during the year ended December 31, 2018.(4)Reflects the adoption of ASU 2016-02, Leases (Topic 842), which resulted in an increase to retained earnings of $178 million during the year ended December 31, 2019.

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