Items Affecting Comparability of Net Income, Financial Position and Cash Flows (Details) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		12 Months Ended		48 Months Ended	51 Months Ended
		Mar. 31, 2019 USD ($) days Years restaurants $ / shares shares	Mar. 31, 2018 USD ($) restaurants $ / shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2019 USD ($) days Years shares	Jan. 01, 2019 USD ($)
Net Cash Provided by (Used in) Investing Activities		$ (34.0)	$ 164.0
Net Cash Provided by (Used in) Financing Activities		$ (278.0)	(976.0)
Investment Owned, Balance, Shares | shares		2.8					2.8
Net Cash Provided by (Used in) Operating Activities		$ 300.0	189.0
Costs associated with PH U.S. Acceleration Agreement		8.0	7.0
Revenues		1,254.0	1,371.0
Total Liabilities and Shareholders’ Deficit		4,744.0		$ 4,130.0		$ 4,130.0	$ 4,744.0
Cash and cash equivalents		278.0		292.0		292.0	278.0
Proceeds from refranchising of restaurants		14.0	205.0
Refranchising (gain) loss		(6.0)	(156.0)
General and Administrative Expense		211.0	219.0
Interest Income (Expense), Net		115.0	107.0
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		299.0	509.0
Income tax provision		37.0	76.0
Cost of Goods and Services Sold		272.0	438.0
Accounts and notes receivable, net		543.0		561.0		561.0	543.0
Prepaid expenses and other current assets		(365.0)		(354.0)		(354.0)	(365.0)
Assets, Current		1,186.0		1,207.0		1,207.0	1,186.0
Property, plant and equipment, net		1,212.0		1,237.0		1,237.0	1,212.0
Goodwill		529.0		525.0		525.0	529.0
Intangible assets, net		243.0		242.0		242.0	243.0
Other assets		1,372.0		724.0		724.0	1,372.0
Deferred income taxes		202.0		195.0		195.0	202.0
Assets		4,744.0		4,130.0		4,130.0	4,744.0
Accounts payable and other current liabilities		918.0		911.0		911.0	918.0
Income taxes payable		71.0		69.0		69.0	71.0
Short-term borrowings		338.0		321.0		321.0	338.0
Liabilities, Current		1,327.0		1,301.0		1,301.0	1,327.0
Long-term debt		9,736.0		9,751.0		9,751.0	9,736.0
Other liabilities and deferred credits		1,585.0		1,004.0		1,004.0	1,585.0
Liabilities		12,648.0		12,056.0		12,056.0	12,648.0
Accumulated deficit		7,580.0		7,592.0		7,592.0	7,580.0
Accumulated other comprehensive income (loss)		(324.0)		(334.0)		(334.0)	(324.0)
Stockholders' Equity Attributable to Parent		(7,904.0)		(7,926.0)		(7,926.0)	(7,904.0)
Franchisor Costs		43.0	47.0
Cooperative Advertising Expense		301.0	272.0
Other (income) expense		0.0	(2.0)
Total costs and expenses, net		821.0	818.0
Operating Income (Loss)		433.0	553.0
Other investment (income) expense, net		16.0	(66.0)
Other pension (income) expense		3.0	3.0
Net Income (Loss) Attributable to Parent		$ 262.0	$ 433.0
Earnings Per Share, Basic | $ / shares		$ 0.85	$ 1.30
Diluted Earnings Per Common Share | $ / shares		$ 0.83	$ 1.27
Equity Securities, FV-NI, Cost		$ 200.0					$ 200.0
Equity Securities, FV-NI, Unrealized Gain (Loss)		20.0
KFC Global Division [Member]
Revenues		566.0	$ 658.0
Refranchising (gain) loss		(2.0)	(57.0)
Operating Income (Loss)		236.0	221.0
Unallocated [Member]
Refranchising (gain) loss		(6.0)	(156.0)
General and Administrative Expense		43.0	44.0
Franchisor Costs	[1]	1.0	1.0
Other (income) expense		0.0	(1.0)
Pizza Hut Global Division [Member]
Revenues		243.0	251.0
Refranchising (gain) loss		0.0	(2.0)
Operating Income (Loss)		97.0	88.0
Taco Bell Global Division [Member]
Revenues		445.0	462.0
Refranchising (gain) loss		(4.0)	(97.0)
Operating Income (Loss)		$ 138.0	$ 132.0
Refranchising (gain) loss
Number of Restaurants Refranchised | restaurants		6	144
Franchise and property expenses [Member]
Costs associated with PH U.S. Acceleration Agreement			$ 3.0
Franchise and property expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement		$ 1.0	1.0	37.5	$ 33.0
Balances with Adoption of Topic 842 [Member]
Total Liabilities and Shareholders’ Deficit								$ 4,809.0
Cash and cash equivalents								292.0
Accounts and notes receivable, net								561.0
Prepaid expenses and other current assets								(344.0)
Assets, Current								1,197.0
Property, plant and equipment, net								1,237.0
Goodwill								525.0
Intangible assets, net								242.0
Other assets								1,413.0
Deferred income taxes								195.0
Assets								4,809.0
Accounts payable and other current liabilities								987.0
Income taxes payable								69.0
Short-term borrowings								321.0
Liabilities, Current								1,377.0
Long-term debt								9,751.0
Other liabilities and deferred credits								1,609.0
Liabilities								12,737.0
Accumulated deficit								7,594.0
Accumulated other comprehensive income (loss)								(334.0)
Stockholders' Equity Attributable to Parent								(7,928.0)
Product [Member]
Revenues		333.0	512.0
Franchise [Member]
Revenues		612.0	584.0
Advertising [Member]
Revenues		$ 309.0	275.0
Investment closing date [Member]
Time period shares are restricted from being transferred | Years		2					2
Termination of Master Services Agreement [Member]
Time period shares are restricted from being transferred | days		30					30
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Maximum [Member]
Derivative, Maturity Date		Jun. 12, 2020
Equipment [Member] | Franchise and property expenses [Member]
Costs associated with KFC U.S. Acceleration Agreement		$ 1.0	1.0				$ 122.0
Incremental Advertising [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement			2.0
2017 to 2018 [Domain] | Franchise and property expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement		90.0
2015 to 2019 [Member] | Equipment [Member] | Franchise and property expenses [Member]
Costs associated with KFC U.S. Acceleration Agreement		130.0
2015 to 2018 [Domain] | Incremental Advertising [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement						60.0
Capital Investments [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement					$ 39.0
Previously Reported [Member]
Total Liabilities and Shareholders’ Deficit				4,130.0		4,130.0
Cash and cash equivalents				292.0		292.0
Accounts and notes receivable, net				561.0		561.0
Prepaid expenses and other current assets				(354.0)		(354.0)
Assets, Current				1,207.0		1,207.0
Property, plant and equipment, net				1,237.0		1,237.0
Goodwill				525.0		525.0
Intangible assets, net				242.0		242.0
Other assets				724.0		724.0
Deferred income taxes				195.0		195.0
Assets				4,130.0		4,130.0
Accounts payable and other current liabilities				911.0		911.0
Income taxes payable				69.0		69.0
Short-term borrowings				321.0		321.0
Liabilities, Current				1,301.0		1,301.0
Long-term debt				9,751.0		9,751.0
Other liabilities and deferred credits				1,004.0		1,004.0
Liabilities				12,056.0		12,056.0
Accumulated deficit				7,592.0		7,592.0
Accumulated other comprehensive income (loss)				(334.0)		(334.0)
Stockholders' Equity Attributable to Parent				(7,926.0)		(7,926.0)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Other Assets [Member]
Equity Securities, FV-NI		$ 194.0	$ 66.0	$ 214.0		$ 214.0	$ 194.0
Accounting Standards Update 2016-02 [Member]
Total Liabilities and Shareholders’ Deficit								679.0
Cash and cash equivalents								0.0
Accounts and notes receivable, net								0.0
Prepaid expenses and other current assets								10.0
Assets, Current								(10.0)
Property, plant and equipment, net								0.0
Goodwill								0.0
Intangible assets, net								0.0
Other assets								689.0
Deferred income taxes								0.0
Assets								679.0
Accounts payable and other current liabilities								76.0
Income taxes payable								0.0
Short-term borrowings								0.0
Liabilities, Current								76.0
Long-term debt								0.0
Other liabilities and deferred credits								605.0
Liabilities								681.0
Accumulated deficit								2.0
Accumulated other comprehensive income (loss)								0.0
Stockholders' Equity Attributable to Parent								(2.0)
Accounting Standards Update 2016-02 [Member] | Lease Right of Use Asset [Member]
Other assets								690.0
Present Value of Operating Lease Payments [Member] | Accounting Standards Update 2016-02 [Member]
Accounts payable and other current liabilities								83.0
Other liabilities and deferred credits								661.0
Write off impact of recognizing rent expense on straight line basis [Member] | Accounting Standards Update 2016-02 [Member]
Accounts payable and other current liabilities								7.0
Other liabilities and deferred credits								56.0
Write off of prepaid rent recorded under Legacy GAAP [Member] | Accounting Standards Update 2016-02 [Member]
Prepaid expenses and other current assets								(11.0)
Other assets								$ 1.0

[1] Represents costs associated with the KFC U.S. Acceleration Agreement and Pizza Hut U.S. Transformation Agreement. See Note 5.