Financing Obligations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2013 monthly_payment		May 19, 2008 Sale Leaseback Transaction Agreement for Properties real_property	Jun. 30, 2008 Master Lease Agreement term_extension_option	Dec. 31, 2013 Master Lease Agreement real_property
Sale Leaseback Transaction [Line Items]
Parcels of real property under sale leaseback transaction			181		181
Gross proceeds of sale leaseback transaction				$ 337.2
Sale leaseback initial term				20 years
Number of options to extend initial leaseback term				4
Extension period for options to extend sale leaseback initial term (in years)				5 years
Properties assigned to franchisee or released from lessor					148
Reduction in property and equipment and financing obligations as a result of sales transactions					264.4
Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
2014	5.7
2015	6.2	[1]
2016	5.7
2017	5.2
2018	6.0
Thereafter	92.4
Total minimum lease payments	121.2
Less: interest	(72.3)
Total financing obligations	48.9
Less: current portion(2)	(0.1)	[2]
Long-term financing obligations	$ 48.8
Number of monthly leaseback obligation payments in fiscal 2015	13

[1] Due to the varying closing date of the Company's fiscal year, 13 monthly payments will be made in fiscal 2015.

[2] Included in current maturities of capital lease and financing obligations on the consolidated balance sheet.