Shareholders' Equity (Details 2) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 2
OCI, net of tax		(65)		$ 187		$ (159)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		(334)
Defined Benefit Plan, Amortization of Gain (Loss)		(17)		(5)
Pension settlement charges				(20)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		5		5
Tax (expense) benefit on reclassification of pension and post-retirement losses to net income		5		18
Translation Adjustment and Gains (Losses) From Intra-Entity Transactions of a Long-Term Nature
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	[1],[2]	21
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance		(174)	[1]	(336)
Amounts classified into OCI, net of tax	[1]	(88)		107
Amounts reclassified from accumulated OCI, net of tax	[1]	(4)		55
OCI, net of tax	[1]	(92)		162
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		(245)	[1]	(174)	[1]	(336)
Pension and Post-Retirement Benefit Plan Losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	[3],[4]	(17)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance		(106)	[3]	(127)
Amounts classified into OCI, net of tax	[3]	24		(13)
Amounts reclassified from accumulated OCI, net of tax	[3]	17		34
OCI, net of tax	[3]	41		21
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		(82)	[3]	(106)	[3]	(127)
Net Unrealized Loss on Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	[4],[5]	(2)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	[5]	9		5
Amounts classified into OCI, net of tax	[5]	20		(51)
Amounts reclassified from accumulated OCI, net of tax	[5]	(34)		55
OCI, net of tax	[5]	(14)		4
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	[5]	(7)		9		5
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance		(271)		(458)
Amounts classified into OCI, net of tax		(44)		43
Amounts reclassified from accumulated OCI, net of tax		(21)		144
OCI, net of tax		(65)		187
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance		(334)		(271)		(458)
U.S. Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Defined Benefit Plan, Amortization of Gain (Loss)		16		5		6
Pension settlement charges	[6]	0		19		32
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	[7]	5		6		6
U.S. Pension Plans [Member] | Other pension (income) expense [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension data adjustment		$ 0		$ 22	[8]	$ 0

[1] Amounts reclassified from AOCI are due to substantially complete liquidations of foreign entities related to the KFC and Pizza Hut Brazil refranchising transactions during 2018 and KFC Turkey, Pizza Hut Turkey, Pizza Hut Thailand and Pizza Hut Korea refranchising transactions during 2017.

[2] Represents the impact of foreign currency translation from the adoption of Topic 606. See Notes 2 and 5.

[3] Amounts reclassified from AOCI for pension and post-retirement benefit plan losses during 2018 include amortization of net losses of $17 million, amortization of prior service cost of $5 million and related income tax benefit of $5 million. Amounts reclassified from AOCI for pension and post-retirement benefit plan losses during 2017 include amortization of net losses of $5 million, historical pension data adjustment of $22 million, settlement charges of $20 million, amortization of prior service cost of $5 million and related income tax benefit of $18 million. See Note 14.

[4] During the quarter ended March 31, 2018, we adopted a standard that allows for the reclassification from AOCI to Accumulated deficit for stranded tax effects resulting from the Tax Act. See Note 2.

[5] See Note 12 for details on amounts reclassified from AOCI.

[6] Settlement losses result when benefit payments exceed the sum of the service cost and interest cost within a plan during the year. These losses were recorded in Other pension (income) expense.

[7] Prior service costs are amortized on a straight-line basis over the average remaining service period of employees expected to receive benefits.

[8] Reflects a non-cash, out-of-year charge related to the adjustment of certain historical deferred vested liability balances in the Plan during the first quarter of 2017 recorded in Other pension (income) expense. See Note 5.