Items Affecting Comparability of Net Income, Financial Position and Cash Flows (Details 2) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended			12 Months Ended	36 Months Ended
		Dec. 31, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2017	Jan. 01, 2018
Company sales			$ 512.0	$ 902.0
Cash and cash equivalents			982.0		$ 1,522.0	$ 1,522.0
Gain (Loss) on Disposition of Assets			(156.0)	(111.0)
Restricted Cash							$ 58.0
Accounts and notes receivable, net			501.0		400.0	400.0
Prepaid expenses and other current assets			406.0		384.0	384.0
Advertising cooperative assets, restricted			0.0		201.0	201.0
Assets, Current			1,889.0		2,507.0	2,507.0
Property, plant and equipment, net			1,651.0		1,697.0	1,697.0
Goodwill			514.0		512.0	512.0
Intangible assets, net			105.0		110.0	110.0
Other assets			490.0		346.0	346.0
Deferred income taxes			187.0		139.0	139.0
Assets			4,836.0		5,311.0	5,311.0
Accounts payable and other current liabilities			924.0		813.0	813.0
Income taxes payable			124.0		123.0	123.0
Short-term borrowings			61.0		375.0	375.0
Advertising cooperative liabilities			0.0		201.0	201.0
Liabilities, Current			1,109.0		1,512.0	1,512.0
Long-term debt			9,419.0		9,429.0	9,429.0
Other liabilities and deferred credits			1,062.0		704.0	704.0
Liabilities			11,590.0		11,645.0	11,645.0
Retained earnings (Accumulated deficit)			(6,539.0)		(6,063.0)	(6,063.0)
Accumulated other comprehensive income (loss)			(215.0)		(271.0)	(271.0)
Stockholders' Equity Attributable to Parent			(6,754.0)		(6,334.0)	(6,334.0)
Total Liabilities and Shareholders’ Deficit			4,836.0		5,311.0	5,311.0
Franchise and property revenues			584.0	515.0
Franchise contributions for advertising and other services			275.0	0.0
Total Revenues			1,371.0	1,417.0
Cost of Goods Sold			438.0	758.0
General and Administrative Expense			219.0	237.0
Franchise Costs			47.0	46.0
Cooperative Advertising Expense			272.0	0.0
Other (income) expense			(2.0)	3.0
Costs and Expenses			818.0	933.0
Operating Profit			553.0	484.0
Other investment (income) expense, net			(66.0)	(1.0)
Other pension (income) expense			3.0	28.0
Interest Income (Expense), Net			107.0	110.0
Income Before Income Taxes			509.0	347.0
Income tax provision			76.0	67.0
Net Income (Loss) Attributable to Parent			$ 433.0	$ 280.0
Basic Earnings Per Common Share			$ 1.30	$ 0.78
Diluted Earnings Per Common Share			$ 1.27	$ 0.77
KFC Global Division [Member]
Gain (Loss) on Disposition of Assets			$ (57.0)	$ 1.0
Total Revenues			658.0	732.0
Operating Profit			221.0	207.0
Unallocated [Member]
Gain (Loss) on Disposition of Assets			(156.0)	(111.0)
General and Administrative Expense	[1]		44.0	53.0
Franchise Costs	[2]		1.0	3.0
Pizza Hut Global Division [Member]
Gain (Loss) on Disposition of Assets			(2.0)	2.0
Total Revenues			251.0	234.0
Operating Profit			88.0	83.0
Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement					39.0
General and Administrative Expense [Member]
General and Administrative Expense			219.0
General and Administrative Expense [Member] | Unallocated [Member]
Costs Associated with strategic initiatives			1.0	7.0
Franchise and license expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement					31.0
Franchise and license expenses [Member] | 2017 to 2018 [Domain] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement			90.0
Incremental Advertising [Member] | Pizza Hut Global Division [Member]
Costs associated with PH U.S. Acceleration Agreement					25.0
Incremental Advertising [Member] | 2018 [Member] | Pizza Hut Global Division [Member]
Costs associated with PH U.S. Acceleration Agreement			12.5
Incremental Advertising [Member] | Second half of 2017 to 2018 [Domain] | Pizza Hut Global Division [Member]
Costs associated with PH U.S. Acceleration Agreement			37.5
Incremental Advertising [Member] | Franchise and license expenses [Member] | Pizza Hut Global Division [Member]
Costs associated with PH U.S. Acceleration Agreement			3.0
Capital Investments [Member]
Costs associated with PH U.S. Acceleration Agreement			7.0
Equipment [Member] | Franchise and license expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with KFC U.S. Acceleration Agreement						(115.0)
Equipment [Member] | Franchise and license expenses [Member] | 2015 to 2018 [Domain]
Costs associated with KFC U.S. Acceleration Agreement			(130.0)
Franchise Incentive [Member] | Franchise and property revenue [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement			(2.0)
Incremental Advertising [Member] | 2015 to 2018 [Domain] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement			(60.0)
Incremental Advertising [Member] | 2018 [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement		$ (10.0)
Incremental Advertising [Domain] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement			(2.0)	(4.0)	(20.0)	(50.0)
Property, Plant and Equipment [Member]
Costs associated with PH U.S. Acceleration Agreement					8.0
Property, Plant and Equipment [Member] | Franchise Incentive [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement					5.0
Accounting Standards Update 2014-09 [Member]
Restricted Cash							58.0
Deferred income taxes							26.0
Accumulated other comprehensive income (loss)							21.0
Accounting Standards Update 2014-09 [Member] | Other Assets [Member] | Franchise Incentive [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement						19.0
Accounting Standards Update 2014-09 [Member] | Other Assets [Member] | Franchise Incentive Amortization [Member] [Member] | KFC Global Division [Member]
Costs associated with KFC U.S. Acceleration Agreement						100.0
Balances with Adoption of Topic 606 [Domain]
Cash and cash equivalents							1,533.0
Accounts and notes receivable, net							512.0
Prepaid expenses and other current assets							460.0
Advertising cooperative assets, restricted							0.0
Assets, Current							2,505.0
Property, plant and equipment, net							1,708.0
Goodwill							512.0
Intangible assets, net							110.0
Other assets							464.0
Deferred income taxes							165.0
Assets							5,464.0
Accounts payable and other current liabilities							1,033.0
Income taxes payable							123.0
Short-term borrowings							375.0
Advertising cooperative liabilities							0.0
Liabilities, Current							1,531.0
Long-term debt							9,429.0
Other liabilities and deferred credits							1,057.0
Liabilities							12,017.0
Retained earnings (Accumulated deficit)							(6,303.0)
Accumulated other comprehensive income (loss)							(250.0)
Stockholders' Equity Attributable to Parent							(6,553.0)
Total Liabilities and Shareholders’ Deficit							5,464.0
Scenario, Previously Reported [Member]
Cash and cash equivalents					1,522.0	1,522.0
Accounts and notes receivable, net					400.0	400.0
Prepaid expenses and other current assets					384.0	384.0
Advertising cooperative assets, restricted					201.0	201.0
Assets, Current					2,507.0	2,507.0
Property, plant and equipment, net					1,697.0	1,697.0
Goodwill					512.0	512.0
Intangible assets, net					110.0	110.0
Other assets					346.0	346.0
Deferred income taxes					139.0	139.0
Assets					5,311.0	5,311.0
Accounts payable and other current liabilities					813.0	813.0
Income taxes payable					123.0	123.0
Short-term borrowings					375.0	375.0
Advertising cooperative liabilities					201.0	201.0
Liabilities, Current					1,512.0	1,512.0
Long-term debt					9,429.0	9,429.0
Other liabilities and deferred credits					704.0	704.0
Liabilities					11,645.0	11,645.0
Retained earnings (Accumulated deficit)					(6,063.0)	(6,063.0)
Accumulated other comprehensive income (loss)					(271.0)	(271.0)
Stockholders' Equity Attributable to Parent					(6,334.0)	(6,334.0)
Total Liabilities and Shareholders’ Deficit					5,311.0	$ 5,311.0
Scenario, Previously Reported [Member] | Franchise Incentive [Member] | Franchise and license expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with PH U.S. Acceleration Agreement					$ 5.0
Scenario, Previously Reported [Member] | Equipment [Member] | Franchise and license expenses [Member] | Unallocated and General and administrative expenses [Domain]
Costs associated with KFC U.S. Acceleration Agreement				$ (3.0)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Company sales			0.0
Cash and cash equivalents			(20.0)				11.0
Gain (Loss) on Disposition of Assets			0.0
Accounts and notes receivable, net			(109.0)				112.0
Prepaid expenses and other current assets			(71.0)				76.0	[3]
Advertising cooperative assets, restricted			197.0				(201.0)
Assets, Current			(3.0)				(2.0)
Property, plant and equipment, net			(13.0)				11.0
Goodwill			0.0				0.0
Intangible assets, net			0.0				0.0
Other assets			(118.0)				118.0
Deferred income taxes			(24.0)				26.0
Assets			(158.0)				153.0
Accounts payable and other current liabilities			(235.0)				220.0
Income taxes payable			0.0				0.0
Short-term borrowings			0.0				0.0
Advertising cooperative liabilities			197.0				(201.0)
Liabilities, Current			(38.0)				19.0
Long-term debt			0.0				0.0
Other liabilities and deferred credits			(339.0)				353.0
Liabilities			(377.0)				372.0
Retained earnings (Accumulated deficit)			242.0				(240.0)
Accumulated other comprehensive income (loss)			(23.0)				21.0
Stockholders' Equity Attributable to Parent			219.0				(219.0)
Total Liabilities and Shareholders’ Deficit			(158.0)				$ 153.0
Franchise and property revenues			5.0
Franchise contributions for advertising and other services			(275.0)
Total Revenues			(270.0)
Cost of Goods Sold			0.0
General and Administrative Expense			0.0
Franchise Costs			6.0
Cooperative Advertising Expense			(272.0)
Other (income) expense			0.0
Costs and Expenses			(266.0)
Operating Profit	[4]		(4.0)
Other investment (income) expense, net			0.0
Other pension (income) expense			0.0
Interest Income (Expense), Net			0.0
Income Before Income Taxes			(4.0)
Income tax provision			(1.0)
Net Income (Loss) Attributable to Parent			$ (3.0)
Basic Earnings Per Common Share			$ (0.01)
Diluted Earnings Per Common Share			$ (0.01)
Balances with Adoption of Topic 606 [Domain]
Company sales			$ 512.0
Cash and cash equivalents			962.0
Gain (Loss) on Disposition of Assets			(156.0)
Accounts and notes receivable, net			392.0
Prepaid expenses and other current assets			335.0
Advertising cooperative assets, restricted			197.0
Assets, Current			1,886.0
Property, plant and equipment, net			1,638.0
Goodwill			514.0
Intangible assets, net			105.0
Other assets			372.0
Deferred income taxes			163.0
Assets			4,678.0
Accounts payable and other current liabilities			689.0
Income taxes payable			124.0
Short-term borrowings			61.0
Advertising cooperative liabilities			197.0
Liabilities, Current			1,071.0
Long-term debt			9,419.0
Other liabilities and deferred credits			723.0
Liabilities			11,213.0
Retained earnings (Accumulated deficit)			(6,297.0)
Accumulated other comprehensive income (loss)			(238.0)
Stockholders' Equity Attributable to Parent			(6,535.0)
Total Liabilities and Shareholders’ Deficit			4,678.0
Franchise and property revenues			589.0
Franchise contributions for advertising and other services			0.0
Total Revenues			1,101.0
Cost of Goods Sold			438.0
General and Administrative Expense			219.0
Franchise Costs			53.0
Cooperative Advertising Expense			0.0
Other (income) expense			(2.0)
Costs and Expenses			552.0
Operating Profit			549.0
Other investment (income) expense, net			(66.0)
Other pension (income) expense			3.0
Interest Income (Expense), Net			107.0
Income Before Income Taxes			505.0
Income tax provision			75.0
Net Income (Loss) Attributable to Parent			$ 430.0
Basic Earnings Per Common Share			$ 1.29
Diluted Earnings Per Common Share			$ 1.26

[1] Amounts include charges associated with YUM's Strategic Transformation Initiatives of $1 million for the quarter ended March 31, 2018, and $7 million for the quarter ended March 31, 2017. See Note 5.

[2] Represents costs associated with the KFC U.S. Acceleration Agreement. 2018 also includes costs associated with the Pizza Hut U.S. Transformation Agreement. See Note 5.

[3] Includes $58 million of restricted cash related to advertising cooperatives. These balances can only be used to settle obligations of the respective cooperatives.

[4] Includes $4 million of franchise incentive payments related to the KFC U.S. Acceleration Agreement and the Pizza Hut U.S. Transformation Agreement that would have been expensed immediately and that we would not have allocated to the KFC Division or the Pizza Hut Division under Legacy GAAP. Upon the adoption of Topic 606, these payments have been capitalized as assets.