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Unrecognized Tax Benefits that Would Impact Deferred Tax Rate

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of reasonable estimate for income tax benefit for which accounting for tax effect for remeasurement of deferred tax liability from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act.

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Amount of reasonable estimate for income tax expense (benefit) for which accounting for tax effect for remeasurement of deferred tax from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act.

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Amount of reasonable estimate for undistributed accumulated earnings of foreign subsidiary subject to transition tax for which accounting is incomplete pursuant to Tax Cuts and Jobs Act.

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Amount of income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Unrecognized tax benefits if recognized would impact effective tax rate		$ 40	$ 59
Unrecognized tax benefits if recognized would affect deferred taxes		24	26
Interest (income) expense associated with uncertain tax position		6	5	$ (13)
Potential decrease in liability for uncertain tax positions		28
Effective income tax rate reconciliation, Tax Cuts and Jobs Act, transition tax on accumulated foreign earnings, amount	$ 413	84	14
Effective income tax rate reconciliation, Tax Cuts and Jobs Act, tax credit, foreign		38	34
Tax Cuts and Jobs Act of 2017, incomplete accounting, change in tax rate, provisional income tax expense (benefit)	(3,367)		188
Effective income tax rate reconciliation, Tax Cuts and Jobs Act, transition tax on accumulated foreign earnings, amount			$ 140
Effective income tax rate reconciliation, change in enacted tax rate, amount	3,017
Tax Cuts and Jobs Act of 2017, measurement period adjustment, income tax benefit	$ 763			763
Tax (benefit) provision recorded				232
Tax Year 2010 Through Tax Year 2013 [Member]
Income Taxes [Line Items]
Tax (benefit) provision recorded				152
Audit Adjustments Prior Year Tax Audits [Member]
Income Taxes [Line Items]
Tax (benefit) provision recorded		105
Accruals no longer required [Member]
Income Taxes [Line Items]
Tax (benefit) provision recorded		100		$ (114)
Equity Method Investments [Member]
Income Taxes [Line Items]
Tax (benefit) provision recorded		79
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating losses carry forward		655
JUUL [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount		$ 2,024