Fair Value Disclosures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						4 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012		Dec. 27, 2014	Dec. 28, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Fair Value, Level 1 to Level 2 Transfers, Amount	$ 0		$ 0
Fair Value, Assets or Liabilities, Level 2 to Level 1 Transfers, Amount	0		0
Debt obligations, excluding capital leases, estimate of fair value	3,400						3,400
Debt obligations, excluding capital leases, carrying amount	3,200						3,200
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain upon acquisition of Little Sheep	0		0		74	[1]
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	55		36				55	36
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value, Net	24		1				24	1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value, Net	10		17				10	17
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	21		18				21	18
Non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Gains) losses recognized from all non-recurring fair value measurements	518		314
Non-recurring basis | Fair Value, Inputs, Level 3 [Member] | Closures and impairment (income) expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses related to long-lived assets held for use and measured at fair value on a non-recurring basis	46	[2]	19	[2]
Non-recurring basis | Fair Value, Inputs, Level 3 [Member] | Gain (Loss) on Disposition of Property Plant Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses related to long-lived assets held for use and measured at fair value on a non-recurring basis	9	[3]	0
Little Sheep [Member] | Non-recurring basis | Fair Value, Inputs, Level 3 [Member] | Closures and impairment (income) expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses related to long-lived assets held for use and measured at fair value on a non-recurring basis	463	[4]	295	[4]
Little Sheep [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses related to long-lived assets held for use and measured at fair value on a non-recurring basis							14	4
Gain upon acquisition of Little Sheep					(74)
Little Sheep [Member] | Closures and impairment (income) expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total losses related to long-lived assets held for use and measured at fair value on a non-recurring basis	$ 14		$ 4

[1] See Note 4.

[2] Restaurant-level impairment charges are recorded in Closures and impairment (income) expenses and resulted primarily from our semi-annual impairment evaluation of long-lived assets of individual restaurants that were being operated at the time of impairment and had not been offered for refranchising. The fair value measurements used in these impairment evaluations were based on discounted cash flow estimates using unobservable inputs (Level 3). The remaining net book value of assets measured at fair value during the years ended December 27, 2014 and December 28, 2013 is insignificant.

[3] Refranchising related impairment results from writing down the assets of restaurants or restaurant groups offered for refranchising, including certain instances where a decision has been made to refranchise restaurants that are deemed to be impaired. The fair value measurements used in our impairment evaluation are based on either actual bids received from potential buyers (Level 2), or on estimates of the sales prices we anticipated receiving from a buyer for the restaurant or restaurant groups (Level 3). The remaining net book value of these restaurants at December 27, 2014 is insignificant.

[4] See the Little Sheep Acquisition and Subsequent Impairment section of Note 4 for further discussion.