Revenue Recognition - Principal Revenue Transactions (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 01, 2018	Jun. 25, 2017	[1]	Jul. 01, 2018	Jun. 25, 2017	[1]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	$ 1,031,814	$ 1,036,458	[2]	$ 2,148,279	$ 2,191,169	[2]
Restaurant sales [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	1,015,484	1,021,184	[3]	2,114,487	2,165,015	[3]
Franchise and other revenue [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	16,330	15,274		33,792	26,154
Franchise [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	13,134	11,565	[3]	27,349	20,662	[3]
Other revenue [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	$ 3,196	$ 3,709		$ 6,443	$ 5,492

[1] See Note 1 - Description of the Business and Basis of Presentation for details of the impact of implementing ASU No. 2014-09.

[2] See Note 1 - Description of the Business and Basis of Presentation for details of the impact of implementing ASU No. 2014-09.

[3] See Note 1 - Description of the Business and Basis of Presentation for details of the impact of implementing ASU No. 2014-09.