Revenue Recognition Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 1,310	$ 1,368	$ 2,564	$ 2,739
Product [Member]
Revenues	359	512	692	1,024
Franchise [Member]
Revenues	633	584	1,245	1,168
Advertising [Member]
Revenues	318	272	627	547
CHINA \| Franchise [Member]
Revenues	67	64	138	134
Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	16	18	35	38
Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	124	233	240	472
Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	285	264	556	522
Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	128	113	257	230
UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	17	12	35	24
UNITED STATES \| Product [Member]
Revenues	235	279	452	552
UNITED STATES \| Franchise [Member]
Revenues	248	226	481	450
UNITED STATES \| Advertising [Member]
Revenues	190	159	370	317
KFC Global Division [Member]
Revenues	584	651	1,150	1,309
KFC Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	52	49	108	103
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	16	18	34	37
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	117	225	226	453
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	218	198	423	388
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	114	98	230	202
KFC Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	5	5	11	11
KFC Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	18	16	34	33
KFC Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	41	40	79	78
KFC Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	3	2	5	4
Pizza Hut Global Division [Member]
Revenues	246	233	489	484
Pizza Hut Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	15	15	30	31
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	0	0	1	1
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	6	7	12	17
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	60	61	120	123
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	14	15	27	28
Pizza Hut Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	1	1	3	2
Pizza Hut Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	5	11	10	25
Pizza Hut Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	67	63	134	132
Pizza Hut Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	78	60	152	125
Taco Bell Global Division [Member]
Revenues	480	484	925	946
Taco Bell Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	0	0	0	0
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	0	0	0	0
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	1	1	2	2
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	7	5	13	11
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	0	0	0	0
Taco Bell Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	11	6	21	11
Taco Bell Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	212	252	408	494
Taco Bell Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	140	123	268	240
Taco Bell Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	$ 109	$ 97	$ 213	$ 188

The total amount of lease revenue recognized for the period for which the lessee was obligated under leasing arrangements regardless of any other events or conditions. This amount excludes contingent revenue and sublease revenue.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707

+ Details

Name:	us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_ProductMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_FranchiseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_AdvertisingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=country_CN
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=yum_OtherOutsidetheU.S.andChinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=yum_KFCGlobalDivisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=yum_PizzaHutGlobalDivisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=yum_TacoBellGlobalDivisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: