Pension, Retiree Medical and Retiree Savings Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012		Dec. 31, 2011		Dec. 25, 2010
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Accumulated benefit obligation	$ 1,426		$ 1,496
Pension losses in accumulated other comprehensive income (loss):
Net actuarial (gain) loss	19		205		48
Assumed health care cost trend rates [Abstract]
Year that rate reaches ultimate trend rate	2028
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]
Maximum 401(k) participant contribution of eligible compensation	75.00%
Company match of participant contribution up to 6% of eligible compensation	100.00%
Maximum company match of participant contribution of eligible compensation	6.00%
Defined Contribution Plan, Cost Recognized	13		14		15
2012 Deferred Vested Payout Plan for Former Employees [Member]
Change in benefit obligation
Settlement payments	(227)
United States Pension Plans of US Entity, Defined Benefit [Member]
Change in benefit obligation
Benefit obligation at beginning of year	1,381		1,108
Service cost	26		24		25
Interest cost	66		64		62
Participant contributions	0		0
Plan amendments	5		0
Curtailment	(10)		(7)
PBO reduction in excess of settlement payments	(74)	[1]	0
Special termination benefits	3	[2]	5	[2]	1	[2]
Exchange rate changes	0		0
Benefits paid	(14)		(11)
Settlement payments	(278)	[1]	(29)
Actuarial (gain) loss	185		227
Benefit obligation at end of year	1,290		1,381		1,108
Change in plan assets
Fair value of plan assets at beginning of year	998		907
Actual return on plan assets	144		83
Employer contributions	100		53
Participant contributions	0		0
Settlement payments	(278)	[1]	(29)
Benefits paid	(14)		(11)
Exchange rate changes	0		0
Administrative expenses	(5)		(5)
Fair value of plan assets at end of year	945		998		907
Benefit Payments [Abstract]
2013	87
2014	54
2016	55
2015	55
2017	55
2018 - 2022	306
Funded status at end of year	(345)		(383)
Amounts recognized in the Consolidated Balance Sheet:
Accrued benefit asset - non-current	0		0
Accrued benefit liability - current	(19)		(14)
Accrued benefit liability - non-current	(326)		(369)
Accrued benefit amounts recognized	(345)		(383)
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Actuarial net loss	421		540
Prior service cost	7		3
Amounts recognized as a loss in Accumulated Other Comprehensive Income	428		543		363
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	1,290		1,381
Accumulated benefit obligation	1,239		1,327
Fair value of plan assets	945		998
Information for pension plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	1,290		1,381
Accumulated benefit obligation	1,239		1,327
Fair value of plan assets	945		998
Components of net periodic benefit cost:
Service cost	26		24		25
Interest cost	66		64		62
Amortization of prior service cost	1	[3]	1	[3]	1	[3]
Expected return on plan assets	(71)		(71)		(70)
Amortization of net loss	63		31		23
Net periodic benefit cost	85		49		41
Additional loss recognized due to:
Settlement	(89)	[4]	0	[4]	(3)	[4]
Special termination benefits	3	[2]	5	[2]	1	[2]
Pension losses in accumulated other comprehensive income (loss):
Beginning of year	543		363
Net actuarial (gain) loss	117		219
Curtailment gain	(10)		(7)
Amortization of net loss	(63)		(31)
Amortization of prior service cost	(1)		(1)
Prior service cost	5		0
PBO reduction in excess of settlement payment	(74)		0
Exchange rate changes	0		0
End of year	428		543		363
Amounts that will be amortized from accumulated other comprehensive loss in next fiscal year [Abstract]
Estimated net loss that will be amortized from accumulated other comprehensive loss into net periodic pension cost next year	58
Estimated prior service cost that will be amortized from accumulated other comprehensive loss into net periodic pension cost next year	2
Weighted-average assumptions used to determine benefit obligations at the measurement dates:
Discount rate (in hundredths)	4.40%		4.90%
Rate of compensation increase (in hundredths)	3.75%		3.75%
Weighted-average assumptions used to determine the net periodic benefit cost for fiscal years:
Discount rate (in hundredths)	4.90%		5.90%		6.30%
Long-term rate return on plan assets (in hundredths)	7.25%		7.75%		7.75%
Rate of compensation increase (in hundredths)	3.75%		3.75%		3.75%
Plan Assets [Abstract]
Percentage of total pension plan assets composed of investments (in hundredths)	81.00%
Value of mutual fund held as an investment that includes YUM stock	0.7		0.7
Approximate percentage of total plan assets in investment that includes YUM stock (in hundredths)	1.00%
Net payable for unsettled transactions	15
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 1 [Member] | Cash [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[5]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Cash Equivalents [Member]
Change in plan assets
Fair value of plan assets at end of year	42	[5]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Equity Securities - U.S. Large cap [Member]
Change in plan assets
Fair value of plan assets at end of year	290	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Equity Securities - U.S. Mid cap [Member]
Change in plan assets
Fair value of plan assets at end of year	49	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Equity Securities - U.S. Small cap [Member]
Change in plan assets
Fair value of plan assets at end of year	49	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Equity Securities - Non-U.S. [Member]
Change in plan assets
Fair value of plan assets at end of year	100	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Fixed Income Securities - U.S. Corporate [Member]
Change in plan assets
Fair value of plan assets at end of year	247	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Fixed Income Securities - Non-U.S. Corporate [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Fixed Income Securities - U.S. Government and Government Agencies [Member]
Change in plan assets
Fair value of plan assets at end of year	153	[7]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Fixed Income Securities - Non-U.S. Government [Member]
Change in plan assets
Fair value of plan assets at end of year	30	[8]
United States Pension Plans of US Entity, Defined Benefit [Member] | Level 2 [Member] | Alternative Investments [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
United States Pension Plans of US Entity, Defined Benefit [Member] | Amount settled prior to year end [Member]
Change in plan assets
Fair value of plan assets at end of year	960	[9]
International Pension Plans [Member]
Change in benefit obligation
Benefit obligation at beginning of year	187		187
Service cost	2		5		6
Interest cost	8		10		9
Participant contributions	1		1
Plan amendments	0		0
Curtailment	0		(10)
PBO reduction in excess of settlement payments	0		0
Special termination benefits	0		0		0
Exchange rate changes	5		1
Benefits paid	(4)		(2)
Settlement payments	0		0
Actuarial (gain) loss	(6)		(5)
Benefit obligation at end of year	193		187		187
Change in plan assets
Fair value of plan assets at beginning of year	183		164
Actual return on plan assets	21		10
Employer contributions	19		10
Participant contributions	1		1
Settlement payments	0		0
Benefits paid	(4)		(2)
Exchange rate changes	6		0
Administrative expenses	0		0
Fair value of plan assets at end of year	226		183		164
Benefit Payments [Abstract]
2013	1
2014	1
2016	1
2015	1
2017	1
2018 - 2022	6
Funded status at end of year	33		(4)
Amounts recognized in the Consolidated Balance Sheet:
Accrued benefit asset - non-current	33		8
Accrued benefit liability - current	0		0
Accrued benefit liability - non-current	0		(12)
Accrued benefit amounts recognized	33		(4)
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Actuarial net loss	14		30
Prior service cost	0		0
Amounts recognized as a loss in Accumulated Other Comprehensive Income	14		30		46
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	0		0
Accumulated benefit obligation	0		0
Fair value of plan assets	0		0
Information for pension plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	0		99
Accumulated benefit obligation	0		87
Fair value of plan assets	0		87
Discretionary funding contributions in next year	0
Components of net periodic benefit cost:
Service cost	2		5		6
Interest cost	8		10		9
Amortization of prior service cost	0	[3]	0	[3]	0	[3]
Expected return on plan assets	(11)		(12)		(9)
Amortization of net loss	1		2		2
Net periodic benefit cost	0		5		8
Additional loss recognized due to:
Settlement	0	[4]	0	[4]	0	[4]
Special termination benefits	0		0		0
Pension losses in accumulated other comprehensive income (loss):
Beginning of year	30		46
Net actuarial (gain) loss	(15)		(5)
Curtailment gain	0		(10)
Amortization of net loss	(1)		(2)
Amortization of prior service cost	0		0
Prior service cost	0
PBO reduction in excess of settlement payment	0
Exchange rate changes	0		1
End of year	14		30		46
Amounts that will be amortized from accumulated other comprehensive loss in next fiscal year [Abstract]
Estimated net loss that will be amortized from accumulated other comprehensive loss into net periodic pension cost next year	1
Weighted-average assumptions used to determine benefit obligations at the measurement dates:
Discount rate (in hundredths)	4.70%		4.75%
Rate of compensation increase (in hundredths)	3.70%		3.85%
Weighted-average assumptions used to determine the net periodic benefit cost for fiscal years:
Discount rate (in hundredths)	4.75%		5.40%		5.50%
Long-term rate return on plan assets (in hundredths)	5.55%		6.64%		6.66%
Rate of compensation increase (in hundredths)	3.85%		4.41%		4.42%
International Pension Plans [Member] | Level 1 [Member] | Cash [Member]
Change in plan assets
Fair value of plan assets at end of year	9	[5]
International Pension Plans [Member] | Level 2 [Member] | Cash Equivalents [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[5]
International Pension Plans [Member] | Level 2 [Member] | Equity Securities - U.S. Large cap [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
International Pension Plans [Member] | Level 2 [Member] | Equity Securities - U.S. Mid cap [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
International Pension Plans [Member] | Level 2 [Member] | Equity Securities - U.S. Small cap [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
International Pension Plans [Member] | Level 2 [Member] | Equity Securities - Non-U.S. [Member]
Change in plan assets
Fair value of plan assets at end of year	131	[6]
International Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities - U.S. Corporate [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[6]
International Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities - Non-U.S. Corporate [Member]
Change in plan assets
Fair value of plan assets at end of year	33	[6]
International Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities - U.S. Government and Government Agencies [Member]
Change in plan assets
Fair value of plan assets at end of year	0	[10]
International Pension Plans [Member] | Level 2 [Member] | Fixed Income Securities - Non-U.S. Government [Member]
Change in plan assets
Fair value of plan assets at end of year	16	[8]
International Pension Plans [Member] | Level 2 [Member] | Alternative Investments [Member]
Change in plan assets
Fair value of plan assets at end of year	37	[6]
International Pension Plans [Member] | Amount settled prior to year end [Member]
Change in plan assets
Fair value of plan assets at end of year	226
Post-retirement Plan [Member]
Change in benefit obligation
Special termination benefits	1		1		1
Benefit Payments [Abstract]
2013	6
2014	6
2016	6
2015	6
2017	6
2018 - 2022	25
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Actuarial net loss	(8)		(12)
Accumulated benefit obligation	83		86
Components of net periodic benefit cost:
Net periodic benefit cost	6		6		6
Additional loss recognized due to:
Special termination benefits	1		1		1
Assumed health care cost trend rates [Abstract]
Assumed health care cost trend rate (in hundredths)	7.40%		7.50%
Ultimate trend rate (in hundredths)	4.50%
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]
One percentage-point increase in assumed health care cost trend rates, maximum impact to service and interest cost	1
One percentage-point decrease in assumed health care cost trend rates, maximum impact to service and interest cost	1
One percentage-point increase in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation	1
One percentage-point decrease in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation	1
Accumulated Other Comprehensive Income (Loss) [Member] | UK Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Recognized net gain (loss) due to curtailment	$ 10
Equity Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Plan Assets [Abstract]
Equity securities, target allocation (in hundredths)	55.00%
Fixed Income Funds [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Plan Assets [Abstract]
Equity securities, target allocation (in hundredths)	45.00%

[1] See Note 4 for discussion of the settlement payments and settlement loss related to the U.S. Plan's deferred vested benefit program.

[2] Special termination benefits primarily related to the U.S. business transformation measures taken in 2012, 2011 and 2010.

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

[4] Settlement losses result from benefit payments exceeding the sum of the service cost and interest cost for each plan during the year. See Note 4 for discussion of the settlement payments and settlement loss related to the U.S. Plan's deferred vested benefit project.

[5] Short-term investments in money market funds

[6] Securities held in common trusts

[7] As a result of the LJS and A&W divestitures in 2011, we disposed of $26 million of goodwill assigned to our LJS and A&W reporting unit that was previously fully impaired. Goodwill that was assigned to our KFC U.S. and Taco Bell U.S. reporting units upon the acquisition of LJS and A&W and that has not been previously included in the carrying amounts of restaurants disposed of was not impaired, totals approximately $130 million and remains on our Consolidated Balance Sheet at December 29, 2012.

[8] Includes securities held in common trusts and investments held directly by the Plan

[9] Excludes net payable of $15 million in the U.S. for purchases of assets included in the above that were settled after December 29, 2012

[10] Investments held directly by the Plan