Income Taxes (Details) (USD $) In Millions, unless otherwise specified	4 Months Ended		12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013		Dec. 29, 2012
U.S. and foreign income before income taxes [Abstract]
U.S.			$ 506	$ 464		$ 504
Foreign			921	1,087		1,641
Income Before Income Taxes			1,427	1,551		2,145
Details of income tax provision (benefit) [Abstract]
Current: Federal			255	159		160
Current: Foreign			321	330		314
Current: State			2	22		35
Total current income tax provision (benefit)			578	511		509
Deferred: Federal			(67)	42		91
Deferred: Foreign			(106)	(53)		(57)
Deferred: State			1	(13)		(6)
Total deferred income tax provision (benefit)			(172)	(24)		28
Effective income tax rate			406	487		537
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
U.S. federal statutory rate			500	543		751
State income tax, net of federal tax benefit			8	3		4
Statutory rate differential attributable to foreign operations			(168)	(177)		(165)
Adjustments to reserves and prior years			(5)	49		(47)
Change in valuation allowance			35	23		14
Other, net			36	46		(20)
Effective income tax rate			406	487		537
Effective income tax rate reconciliation [Abstract]
U.S. federal statutory rate (in hundredths)			35.00%	35.00%		35.00%
State income tax, net of federal tax benefit (in hundredths)			0.60%	0.20%		0.20%
Statutory rate differential attributable to foreign operations (in hundredths)			(11.70%)	(11.40%)		(7.70%)
Adjustments to reserves and prior years (in hundredths)			(0.30%)	3.10%		(2.20%)
Change in valuation allowance (in hundredths)			2.40%	1.50%		0.60%
Other, net (in hundredths)			2.50%	3.00%		(0.90%)
Effective income tax rate (in hundredths)			28.50%	31.40%		25.00%
Changes in valuation allowance [Roll Forward]
Goodwill impairment loss			160	222
Income Tax And Effective Tax Rate [Abstract]
Gain upon acquisition of Little Sheep			0	0		74	[1]
China
Changes in valuation allowance [Roll Forward]
Goodwill impairment loss			160	222	[2]
Current Year Operations
Changes in valuation allowance [Roll Forward]
Valuation Allowance, Change in Amount			41	32		16
Changes in Judgement
Changes in valuation allowance [Roll Forward]
Valuation Allowance, Change in Amount			(6)	(9)		(2)
Little Sheep [Member]
Changes in valuation allowance [Roll Forward]
Goodwill impairment loss	160	222	160	222
Income Tax And Effective Tax Rate [Abstract]
Gain upon acquisition of Little Sheep						(74)
Non-recurring basis | Fair Value, Inputs, Level 2 [Member] | Little Sheep [Member] | Segment Reconciling Items [Member]
Income Tax And Effective Tax Rate [Abstract]
Gain upon acquisition of Little Sheep						$ 74

[1] See Note 4.

[2] We recorded impairment charges of $160 million and $222 million in 2014 and 2013, respectively, to write down Little Sheep's goodwill. See Note 4.