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Pension, Retiree Medical and Retiree Savings Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Dec. 31, 2016
Dec. 26, 2015
Change in benefit obligation          
Defined Benefit Plan, Administration Expenses $ (6.0) $ (5.0)      
Amounts recognized as a loss in Accumulated Other Comprehensive Income:          
Accumulated benefit obligation       $ 960.0 $ 1,088.0
Components of net periodic benefit cost:          
Amortization of prior service cost 5.0 2.0      
Amortization of net loss (7.0) 46.0      
Pension losses in accumulated other comprehensive income (loss):          
Unrealized gains (losses) arising during the year $ (63.0) 101.0 $ (209.0)    
Assumed health care cost trend rates [Abstract]          
Year that rate reaches ultimate trend rate       2038  
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 $ 14.0 13.0 12.0    
Pension settlement charges $ (32.0) (5.0)      
U.S. Pension Plans [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Amount and Timing of Assets Expected to be Returned to Employer During Following 12 Month Period We do not anticipate any plan assets being returned to the Company during 2017 for any U.S. plans.        
Change in benefit obligation          
Benefit obligation at beginning of year $ 1,134.0 1,301.0      
Service cost 17.0 18.0 17.0    
Interest cost 54.0 55.0 54.0    
Plan amendments 4.0 28.0      
Curtailment (4.0) (2.0)      
Special termination benefits 3.0 1.0 3.0    
Benefits paid (26.0) (50.0)      
Settlement payments [1] (260.0) (16.0)      
Actuarial (gain) loss 77.0 (196.0)      
Benefit obligation at end of year 993.0 1,134.0 1,301.0    
Change in plan assets          
Fair value of plan assets at beginning of year 1,004.0 991.0      
Actual return on plan assets 87.0 (10.0)      
Employer contributions 38.0 94.0      
Settlement payments [1] (260.0) (16.0)      
Benefits paid (26.0) (50.0)      
Defined Benefit Plan, Administrative expenses (6.0) (5.0)      
Fair value of plan assets at end of year 837.0 1,004.0 991.0    
Funded status at end of year       $ (156.0) (130.0)
Benefit Payments [Abstract]          
2016       128.0  
2017       45.0  
2018       42.0  
2019       43.0  
2020       46.0  
2021 - 2025       259.0  
Amounts recognized in the Consolidated Balance Sheet:          
Accrued benefit liability - current       (16.0) (13.0)
Accrued benefit liability - non-current       (140.0) (117.0)
Accrued benefit amounts recognized       (156.0) (130.0)
Amounts recognized as a loss in Accumulated Other Comprehensive Income:          
Actuarial net gain       (150.0) (138.0)
Prior service cost       (30.0) (32.0)
Amounts recognized as a loss in Accumulated Other Comprehensive Income (170.0) (319.0) (319.0) (180.0) (170.0)
Information for pension plans with an accumulated benefit obligation in excess of plan assets:          
Projected benefit obligation       993.0 101.0
Accumulated benefit obligation       960.0 88.0
Fair value of plan assets       837.0 0.0
Information for pension plans with a projected benefit obligation in excess of plan assets:          
Projected benefit obligation       993.0 1,134.0
Accumulated benefit obligation       960.0 1,088.0
Fair value of plan assets       $ 837.0 $ 1,004.0
Components of net periodic benefit cost:          
Service cost 17.0 18.0 17.0    
Interest cost 54.0 55.0 54.0    
Amortization of prior service cost [2] 6.0 1.0 1.0    
Expected return on plan assets (65.0) (62.0) (56.0)    
Amortization of net loss 6.0 45.0 17.0    
Net periodic benefit cost 18.0 57.0 33.0    
Additional loss recognized due to:          
Special termination benefits 3.0 1.0 3.0    
Pension losses in accumulated other comprehensive income (loss):          
Beginning of year (170.0) (319.0)      
Unrealized gains (losses) arising during the year (54.0) 124.0      
Curtailment gain 4.0 2.0      
Amortization of net loss 6.0 45.0      
Amortization of prior service cost 6.0 1.0      
Prior service cost (4.0) (28.0)      
End of year (180.0) $ (170.0) $ (319.0)    
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 7.0        
Estimated prior service cost that will be amortized from accumulated other comprehensive loss into net periodic pension cost next year $ 5.0        
Weighted-average assumptions used to determine benefit obligations at the measurement dates:          
Discount rate (in hundredths)       4.60% 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% 4.30% 5.40%    
Long-term rate return on plan assets (in hundredths) 6.75% 6.75% 6.90%    
Rate of compensation increase (in hundredths) 3.75% 3.75% 3.75%    
Plan Assets [Abstract]          
Fair value of plan assets by asset category $ 1,004.0 $ 1,004.0 $ 991.0 $ 837.0 $ 1,004.0
Value of mutual fund held as an investment that includes YUM stock       0.3 0.5
Approximate percentage of total plan assets in investment that includes YUM stock (in hundredths) 1.00%        
Net (payable) receivable for unsettled transactions [3]       19.0 20.0
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]          
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year $ 0.0        
Pension settlement charges [4] (32.0) 5.0 6.0    
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 1 [Member] | Cash Equivalents [Member]          
Change in plan assets          
Fair value of plan assets at beginning of year [5] 3.0        
Fair value of plan assets at end of year 2.0 3.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category 2.0 3.0 [5]   2.0 3.0 [5]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities - U.S. Corporate [Member]          
Change in plan assets          
Fair value of plan assets at beginning of year [5],[6] 221.0        
Fair value of plan assets at end of year [6] 172.0 221.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [6] 172.0 221.0 [5]   172.0 221.0 [5]
U.S. Pension Plans [Member] | Fair Value, Inputs, Level 2 [Member] | Cash Equivalents [Member]          
Change in plan assets          
Fair value of plan assets at beginning of year [5],[7] 9.0        
Fair value of plan assets at end of year [7] 12.0 9.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [7] 12.0 9.0 [5]   12.0 9.0 [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 beginning of year [5],[6] 310.0        
Fair value of plan assets at end of year [6] 244.0 310.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [6] 244.0 310.0 [5]   244.0 310.0 [5]
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 beginning of year [5],[6] 50.0        
Fair value of plan assets at end of year [6] 41.0 50.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [6] 41.0 50.0 [5]   41.0 50.0 [5]
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 beginning of year [5],[6] 51.0        
Fair value of plan assets at end of year [6] 43.0 51.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [6] 43.0 51.0 [5]   43.0 51.0 [5]
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 beginning of year [5],[6] 100.0        
Fair value of plan assets at end of year [6] 83.0 100.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [6] 83.0 100.0 [5]   83.0 100.0 [5]
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 beginning of year [5],[8] 68.0        
Fair value of plan assets at end of year [8] 76.0 68.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [8] 76.0 68.0 [5]   76.0 68.0 [5]
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 beginning of year [5],[9] 195.0        
Fair value of plan assets at end of year [9] 152.0 195.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [9] 152.0 195.0 [5]   152.0 195.0 [5]
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 beginning of year [5],[9] 17.0        
Fair value of plan assets at end of year [9] 31.0 17.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [9] 31.0 17.0 [5]   31.0 17.0 [5]
U.S. Pension Plans [Member] | Amount settled prior to year end [Member]          
Change in plan assets          
Fair value of plan assets at beginning of year [3],[5] 1,024.0        
Fair value of plan assets at end of year [3] 856.0 1,024.0 [5]      
Plan Assets [Abstract]          
Fair value of plan assets by asset category [3] 856.0 1,024.0 [5]   856.0 1,024.0 [5]
Foreign Pension Plan [Member]          
Change in benefit obligation          
Benefit obligation at beginning of year 233.0        
Benefit obligation at end of year 261.0 233.0      
Change in plan assets          
Fair value of plan assets at beginning of year 291.0        
Fair value of plan assets at end of year 305.0 291.0      
Plan Assets [Abstract]          
Fair value of plan assets by asset category 305.0 291.0   305.0 291.0
Post-retirement Plan [Member]          
Benefit Payments [Abstract]          
2016       5.0  
2017       5.0  
2018       5.0  
2019       5.0  
2020       5.0  
2021 - 2025       19.0  
Amounts recognized as a loss in Accumulated Other Comprehensive Income:          
Actuarial net gain       (10.0) (8.0)
Accumulated benefit obligation       $ 55.0 $ 59.0
Components of net periodic benefit cost:          
Net periodic benefit cost $ 3.0 $ 3.0 $ 5.0    
Assumed health care cost trend rates [Abstract]          
Assumed health care cost trend rate (in hundredths) 6.60% 6.80%      
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 $ 4.0        
One percentage-point decrease in assumed health care cost trend rates, maximum impact to service and interest cost 4.0        
One percentage-point increase in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation 4.0        
One percentage-point decrease in assumed health care cost trend rates, maximum impact to post-retirement benefit obligation $ 4.0        
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%        
[1] For discussion of the settlement payments and settlement losses, see Note 5.
[2] Prior service costs are amortized on a straight-line basis over the average remaining service period of employees expected to receive benefits.
[3] 2016 and 2015 exclude net unsettled trade payables of $19 million and $20 million, respectively.
[4] Settlement losses result when benefit payments exceed the sum of the service cost and interest cost within a plan during the year.
[5]

[6] Securities held in common trusts
[7] Short-term investments in money market funds
[8] Investments held directly by the Plan.
[9] Includes securities held in common trusts and investments held directly by the Plan