Transactions with Related Party Expense Disclosures (Details) (Affiliated Entity [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013 Rate	Sep. 30, 2012	Sep. 29, 2013 Rate	Sep. 30, 2012
Related Party Transaction [Line Items]
Related Party Transaction, Royalty Fee Rate	4.50%		4.50%
Royalty Expense	$ 7.1	$ 7.2	$ 20.7	$ 15.8
Related Party Transaction, Advertising Fee Rate	4.00%		4.00%
Advertising Expense	7.3	7.2	22.0	14.4
Leases, Number of Leased Restaurant Properties	296		296
Operating Leases, Rent Expense	$ 6.6	$ 6.7	$ 20.0	$ 9.7
Leases, Terms Identical to BKC's Terms with Third-Party Lessor [Member]
Related Party Transaction [Line Items]
Leases, Number of Leased Restaurant Properties	196		196