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Leasing Arrangements - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2019
USD ($)
Restaurant
Dec. 31, 2018
USD ($)
Restaurant
Dec. 31, 2017
USD ($)
Restaurant
Operating Leased Assets [Line Items]      
Net Investment in Lease, Change in Present Value, Expense (Reversal) $ 900.0    
Lease term 20 years    
Weighted Average Lease Term 20 years    
Number of Restaurants | Restaurant 38,695 37,855 37,241
Operating Lease, Weighted Average Discount Rate, Percent 4.00%    
Company-operated restaurants:      
Operating Leased Assets [Line Items]      
Number of Restaurants 2,636 2,770 3,133
Percent rents in excess of minimum rents $ 74.4 $ 82.1 $ 115.6
Franchised restaurants:      
Operating Leased Assets [Line Items]      
Number of Restaurants 36,059 35,085 34,108
Percent rents in excess of minimum rents $ 200.7 $ 200.8 $ 204.9
Minimum      
Operating Leased Assets [Line Items]      
Escalation timing 1 year    
Maximum      
Operating Leased Assets [Line Items]      
Escalation timing 5 years