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Income Taxes - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) transaction | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2016 USD ($) | Jan. 01, 2020 USD ($) | Dec. 31, 2017 USD ($)
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transition tax liability |  |  |  |  |  |  |  |  |  |  | $ 1,300 |  |  |
Effective tax rate |  |  |  |  |  |  |  |  | 36.20% | 0.10% | 27.20% |  |  |
Effective income tax rate excluding effects of equity method transaction |  |  |  |  |  |  |  |  | 22.80% |  |  |  |  |
Net discrete one-time events expense (benefit) |  |  |  |  |  |  |  |  | $ (119) | $ (176) | $ 128 |  |  |
Net benefit from release of liabilities for uncertain tax positions, expirations of statutes of limitations and audit settlements |  |  |  |  |  |  |  |  | 50 | $ 128 | 81 |  |  |
Effective tax rate without the impact of Swiss tax reform |  |  |  |  |  |  |  |  |  | 22.40% |  |  |  |
Gain/(loss) on equity method investment transactions | $ 452 | $ 345 | $ 121 | $ 71 | $ 0 | $ 0 | $ (25) | $ 23 | 989 | $ (2) | 778 |  |  |
Discrete tax expense from finalizing accounting for new provisions |  |  |  |  |  |  |  |  |  |  | 19 |  |  |
Loss carryforwards | 3,293 |  |  |  |  |  |  |  | 3,293 |  |  |  |  |
Loss carryforwards, expire at various dates between 2021 and 2040 | 332 |  |  |  |  |  |  |  | 332 |  |  |  |  |
Loss carryforwards, indefinitely | 2,961 |  |  |  |  |  |  |  | 2,961 |  |  |  |  |
Unremitted earnings indefinitely reinvested | 1,600 |  |  |  |  |  |  |  | 1,600 |  |  |  |  |
Deferred tax liabilities not recognized to unremitted earnings indefinitely reinvested | 73 |  |  |  |  |  |  |  | 73 |  |  |  |  |
Unrecognized tax benefits | 442 |  |  |  | $ 426 |  |  |  | 442 | 426 | 516 |  | $ 426 | $ 579
Impact on tax provision from unrecognized tax benefits | 369 |  |  |  |  |  |  |  | 369 |  |  |  | 364 |
Unrecognized tax benefits reasonably possible increase resulting from unfavorable audit developments |  |  |  |  |  |  |  |  | 30 |  |  |  |  |
Unrecognized tax benefits reasonably possible decrease resulting from audit settlements and the expiration of statutes of limitations in various jurisdictions | 70 |  |  |  |  |  |  |  | 70 |  |  |  |  |
Unrecognized tax benefits, income tax penalties and interest accrued | $ 170 |  |  |  |  |  |  |  | 170 |  |  |  | $ 170 |
Net expense for interest and penalties |  |  |  |  |  |  |  |  | $ 11 |  |  |  |  |
Keurig |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain/(loss) on equity method investment transactions |  |  |  |  |  |  | $ (12) |  |  | $ (29) |  | $ 43 |  |
Keurig | Keurig with Dr Pepper Snapple Group, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax expense related to gain on equity method investment transaction |  |  |  |  |  |  |  |  |  |  | 192 |  |  |
KDP |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of sales of equity method investment transactions | transaction |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
KDP | Keurig with Dr Pepper Snapple Group, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain/(loss) on equity method investment transactions |  |  |  |  |  |  |  |  |  |  | $ 778 |  |  |
JDE and JDEP |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax expense incurred in connection with equity method transaction |  |  |  |  |  |  |  |  | $ 452 |  |  |  |  |
Foreign Tax Authority | Swiss Tax Administration |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net benefit from impact of Swiss tax reform |  |  |  |  |  | 767 |  |  |  |  |  |  |  |
Reduction on deferred tax expense from impact of Swiss tax reform |  |  |  |  |  | 769 |  |  |  |  |  |  |  |
Indirect tax on selling, general and administrative expense |  |  |  |  |  | $ 2 |  |  |  |  |  |  |  |
Foreign Tax Authority | State Administration of Taxation, China |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net benefit from release of valuation allowance |  |  |  |  |  |  |  |  | $ 70 |  |  |  |  |

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