Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	57 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	$ 0		$ 20
Tax Adjustments, Settlements, and Unusual Provisions				$ 19
Income Tax And Effective Tax Rate [Abstract]
Effective tax rate	15.10%	15.10%	17.40%	13.70%
Equipment [Member] \| Franchise and property expenses [Member]
Costs associated with KFC U.S. Acceleration Agreement	$ 1	$ 2	$ 3	$ 5	$ 125

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 foreign income tax expense (benefit).

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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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Costs associated with KFC U.S. Acceleration Agreement

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