Revenue Recognition Revenue Recognition (Principal Revenue Transactions) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues	$ 1,022,184	$ 967,144	$ 1,021,930	$ 1,128,131	$ 1,013,113	$ 965,021	$ 1,031,814	$ 1,116,465	$ 4,139,389	$ 4,126,413	$ 4,223,136
Restaurant sales [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues									4,075,014	4,060,871	4,164,063
Franchise and other revenues [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues									64,375	65,542	59,073
Franchise revenue [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues									52,147	52,906	47,021
Other revenue [Member]
Disaggregation of Revenue [Line Items]
Restaurant sales, franchise and other revenues									$ 12,228	$ 12,636	$ 12,052