Segment Reporting (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues		$ 2,029	$ 2,319	$ 2,124	$ 2,304	$ 1,914	$ 2,212	$ 2,068	$ 2,221	$ 8,776	$ 8,415		$ 7,769
Operating Profit		94	$ 300	$ 204	$ 303	84	$ 269	$ 193	$ 395	901	941		778
Interest income, net	[1]									39	36		25
Investment gain (loss)	[1]									63	(27)
Income Before Income Taxes										1,003	950		803
Depreciation and amortization										428	445		409
Impairment Charges										49	52		58
Capital Spending										435	470		415
Total Assets		6,950				4,610				6,950	4,610
KFC [Member]
Segment Reporting Information [Line Items]
Revenues										6,039	5,688		5,066
Total Assets	[2]	3,160				1,745				3,160	1,745
Pizza Hut [Member]
Segment Reporting Information [Line Items]
Revenues										2,054	2,111		2,093
All Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues										121	99		106
Corporate and Unallocated [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									562	517	[3]	504
Unallocated revenues from transactions with franchisees and unconsolidated affiliates	[4]									558	514		504
Unallocated Other revenues										4	3
Unallocated expenses for transactions with franchisees and unconsolidated affiliates	[4]									(554)	(512)		(500)
Unallocated Other operating costs and expenses										(4)	(2)
Unallocated and corporate G&A expenses										(145)	(128)		(185)
Unallocated Closures and impairment expense	[5]									(11)	(12)
Unallocated Other income	[6]									4	98		9
Depreciation and amortization										13	12		14
Impairment Charges	[5]									11	12
Capital Spending										90	95		93
Total Assets	[7]	2,674				2,175				2,674	2,175
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues										8,776	8,415		7,769
Operating Segments [Member] | KFC [Member]
Segment Reporting Information [Line Items]
Revenues										6,040	5,688		5,066
Operating Profit	[8]									949	895		802
Depreciation and amortization										290	296		265
Impairment Charges	[9]									16	14		27
Capital Spending										264	292		227
Operating Segments [Member] | Pizza Hut [Member]
Segment Reporting Information [Line Items]
Revenues										2,054	2,111		2,093
Operating Profit										114	97		157
Depreciation and amortization										120	129		126
Impairment Charges	[9]									20	26		31
Capital Spending										71	77		93
Total Assets		950				558				950	558
Operating Segments [Member] | All Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues										158	115		106
Operating Profit										(14)	(12)		(9)
Depreciation and amortization										5	8		4
Impairment Charges	[9]									2
Capital Spending										10	6		2
Total Assets		$ 166				$ 132				166	132
Elimination [Member]
Segment Reporting Information [Line Items]
Revenues										(38)	(16)
Elimination [Member] | All Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues										37
Combined [Member]
Segment Reporting Information [Line Items]
Revenues										$ 8,814	$ 8,431		$ 7,769

[1] Amounts have not been allocated to any segment for performance reporting purposes.

[2] Includes investments in unconsolidated affiliates.

[3] As COFFii & JOY and our e-commerce business became operating segments starting from the first quarter of 2019, revenue by segment information for 2018 has been recast to align with the change in segment reporting. Additional details on our reportable segments are included in Note 17.

[4] Primarily includes revenues and associated expenses of transactions with franchisee and unconsolidated affiliates derived from the Company’s central procurement model whereby the Company centrally purchases all food and paper products from suppliers then sells and delivers to all restaurants, including franchisees and unconsolidated affiliates. Amounts have not been allocated to any segment for purposes of making operating decisions or assessing financial performance as the transactions are deemed corporate revenues and expenses in nature.

[5] Includes impairment charges on intangible assets and goodwill attributable to the Daojia business in 2019 and 2018, respectively. See Note 5.

[6] In 2018, the unallocated other income primarily includes gain from re-measurement of previously held equity interest in connection with the acquisition of Wuxi KFC. See Note 5.

[7] Primarily includes cash and cash equivalents, short-term investments, inventories and investment in equity securities that are centrally managed.

[8] Includes equity income from investments in unconsolidated affiliates of $69 million, $65 million and $65 million in 2019, 2018 and 2017, respectively.

[9] Primarily includes store closure impairment charges, restaurant-level impairment charges resulting from our semi-annual impairment evaluation, and incremental restaurant-level impairment charges as a result of adopting ASC 842. (See Note 12).