Leasing Arrangements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Restaurant	Dec. 31, 2012 Restaurant	Dec. 31, 2011 Restaurant
Operating Leased Assets [Line Items]
Number of Restaurants	35,429	34,480	33,510
Lease term	20 years
Company-operated restaurants:
Operating Leased Assets [Line Items]
Number of Restaurants	6,738	6,598	6,435
Rents in excess of minimum rents	$ 175.6	$ 169.6	$ 165.2
Franchised restaurants:
Operating Leased Assets [Line Items]
Number of Restaurants	28,691	27,882	27,075
Rents in excess of minimum rents	$ 187.4	$ 178.7	$ 173.4
Ground Leases
Operating Leased Assets [Line Items]
Number of Restaurants	14,815
Minimum
Operating Leased Assets [Line Items]
Escalation timing	1 year
Maximum
Operating Leased Assets [Line Items]
Escalation timing	5 years