Pension, Retiree Medical and Retiree Savings Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Accumulated benefit obligation	$ 1,254		$ 983
Components of net periodic benefit cost:
Amortization of prior service cost	1		2
Amortization of net loss	(20)		(51)
Pension losses in accumulated other comprehensive income (loss):
Net actuarial (gain) loss	209		(221)		19
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	12		12		13
Pension settlement charges	(6)		(30)
Defined Benefit Plan, Administration Expenses	(5)		(6)
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions	75
Expected Benefit Payments in the Following Year	24
Change in benefit obligation
Benefit obligation at beginning of year	1,025		1,290
Service cost	17		21		26
Interest cost	54		54		66
Plan amendments	1		0
Curtailment	(2)		(3)
Special termination benefits	3		5		3
Benefits paid	(65)		(21)
Settlement payments	(17)	[1],[2]	(151)	[2]
Actuarial (gain) loss	290		(164)
Benefit obligation at end of year	1,301		1,025		1,290
Change in plan assets
Fair value of plan assets at beginning of year	933		945
Actual return on plan assets	124		116
Employer contributions	21		22
Settlement payments	(17)	[2]	(123)	[2]
Benefits paid	(65)		(21)
Administrative expenses	(5)		(6)
Fair value of plan assets at end of year	991		933		945
Funded status at end of year	(310)		(92)
Benefit Payments [Abstract]
2015	72
2016	53
2017	51
2018	55
2019	57
2020 - 2024	299
Amounts recognized in the Consolidated Balance Sheet:
Accrued benefit asset - non-current	0		10
Accrued benefit liability - current	(11)		(8)
Accrued benefit liability - non-current	(299)		(94)
Accrued benefit amounts recognized	(310)		(92)
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Actuarial net loss	314		119
Prior service cost	5		5
Amounts recognized as a loss in Accumulated Other Comprehensive Income	319		124		428
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	1,301		102
Accumulated benefit obligation	1,254		94
Fair value of plan assets	991		0
Information for pension plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	1,301		102
Accumulated benefit obligation	1,254		94
Fair value of plan assets	991		0
Discretionary funding contributions in next year	0
Components of net periodic benefit cost:
Service cost	17		21		26
Interest cost	54		54		66
Amortization of prior service cost	1	[3]	2	[3]	1	[3]
Expected return on plan assets	(56)		(59)		(71)
Amortization of net loss	17		48		63
Net periodic benefit cost	33		66		85
Additional loss recognized due to:
Special termination benefits	3		5		3
Pension losses in accumulated other comprehensive income (loss):
Beginning of year	124		428
Net actuarial (gain) loss	220		(221)
Curtailment gain	(2)		(3)
Amortization of net loss	(17)		(48)
Amortization of prior service cost	(1)		(2)
Prior service cost	1		0
End of year	319		124		428
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	45
Estimated prior service cost 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)	4.30%		5.40%
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)	5.40%		4.40%		4.90%
Long-term rate return on plan assets (in hundredths)	6.90%		7.25%		7.25%
Rate of compensation increase (in hundredths)	3.75%		3.75%		3.75%
Plan Assets [Abstract]
Fair value of plan assets by asset category	991		933		945
Value of mutual fund held as an investment that includes YUM stock	0.5		0.2
Approximate percentage of total plan assets in investment that includes YUM stock (in hundredths)			1.00%
Net receivable for unsettled transactions	3		3
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]
Pension settlement charges	6	[4]	30	[4]	89
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Cash Equivalents [Member]
Change in plan assets
Fair value of plan assets at end of year	5	[5]	5	[5]
Plan Assets [Abstract]
Fair value of plan assets by asset category	5	[5]	5	[5]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities - U.S. Large cap [Member]
Change in plan assets
Fair value of plan assets at end of year	298	[6]	329	[6]
Plan Assets [Abstract]
Fair value of plan assets by asset category	298	[6]	329	[6]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities - U.S. Mid cap [Member]
Change in plan assets
Fair value of plan assets at end of year	50	[6]	55	[6]
Plan Assets [Abstract]
Fair value of plan assets by asset category	50	[6]	55	[6]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities - U.S. Small cap [Member]
Change in plan assets
Fair value of plan assets at end of year	50	[6]	53	[6]
Plan Assets [Abstract]
Fair value of plan assets by asset category	50	[6]	53	[6]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities - Non-U.S. [Member]
Change in plan assets
Fair value of plan assets at end of year	91	[6]	110	[6]
Plan Assets [Abstract]
Fair value of plan assets by asset category	91	[6]	110	[6]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities - U.S. Corporate [Member]
Change in plan assets
Fair value of plan assets at end of year	305	[6]	234	[6]
Plan Assets [Abstract]
Fair value of plan assets by asset category	305	[6]	234	[6]
U.S. Pension Plans [Member] | Fair Value, Inputs, 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	178	[7]	129	[7]
Plan Assets [Abstract]
Fair value of plan assets by asset category	178	[7]	129	[7]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities - Non-U.S. Government [Member]
Change in plan assets
Fair value of plan assets at end of year	11	[8]	15	[8]
Plan Assets [Abstract]
Fair value of plan assets by asset category	11	[8]	15	[8]
U.S. Pension Plans [Member] | Amount settled prior to year end [Member]
Change in plan assets
Fair value of plan assets at end of year	988	[9]	930	[9]
Plan Assets [Abstract]
Fair value of plan assets by asset category	988	[9]	930	[9]
Foreign Pension Plan [Member]
Change in benefit obligation
Benefit obligation at end of year	231		226
Change in plan assets
Fair value of plan assets at end of year	288		259
Plan Assets [Abstract]
Fair value of plan assets by asset category	288		259
Post-retirement Plan [Member]
Change in benefit obligation
Special termination benefits	3		5		3
Benefit Payments [Abstract]
2015	6
2016	6
2017	6
2018	6
2019	6
2020 - 2024	24
Amounts recognized as a loss in Accumulated Other Comprehensive Income:
Actuarial net loss	(2)
Accumulated benefit obligation	69		70
Components of net periodic benefit cost:
Net periodic benefit cost	5		5		6
Additional loss recognized due to:
Special termination benefits	3		5		3
Assumed health care cost trend rates [Abstract]
Assumed health care cost trend rate (in hundredths)	7.10%		7.20%
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		1
One percentage-point decrease in assumed health care cost trend rates, maximum impact to service and interest cost			0
One percentage-point increase in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation			0
One percentage-point decrease in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation			0
Equity Securities [Member] | U.S. Pension Plans [Member]
Plan Assets [Abstract]
Equity securities, target allocation (in hundredths)	50.00%
Fixed Income Funds [Member] | U.S. Pension Plans [Member]
Plan Assets [Abstract]
Equity securities, target allocation (in hundredths)	50.00%
Not allocated for performance reporting purposes [Member]
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]
Pension settlement charges			$ 10		$ 84

[1] 2013 includes the transfer of certain non-qualified pension benefits into a defined benefit plan not included in the table

[2] For discussion of the settlement payments and settlement losses, see Components of net periodic benefit cost below.

[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 when benefit payments exceed the sum of the service cost and interest cost within a plan during the year. During the fourth quarter of 2012 and continuing through 2013, the Company allowed certain former employees with deferred vested balances an opportunity to voluntarily elect an early payout of their pension benefits. The majority of these payouts were funded from existing pension plan assets. See Note 4.

[5] Short-term investments in money market funds

[6] Securities held in common trusts

[7] Investments held directly by the Plan

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

[9] 2014 and 2013 both exclude net unsettled trades receivable of $3 million