v3.19.3

Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Operating Loss Carryforwards [Line Items] |  |  |  |
Provision for income taxes | $ 3 | $ 1 | $ 20 | $ 605
Reserve on uncertain tax positions | 1,300 |  | 1,300 |
Increase in gross unrecognized tax benefits |  |  | 1,300 |
Settlement with Taxing Authority |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Expected decrease resulting from settlements with taxing authorities | 141 |  | 141 |
Foreign Deferred Tax Asset, Intellectual Property |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Step-up tax basis, intellectual property, foreign assets | $ 6,100 |  | $ 6,100 |

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