Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions and Dispositions - Additional Information (Detail)

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Business Acquisitions and Dispositions - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Franchise
Jun. 30, 2014
USD ($)
Franchise
Jun. 30, 2015
USD ($)
Franchise
Jun. 30, 2014
USD ($)
Franchise
Business Acquisition [Line Items]        
Number of franchise acquired     0  
Aggregate purchase price of franchise | $       $ 2.6
Number of franchises disposed 1 2 1 3
Cash generated from disposition | $ $ 1.3 $ 13.3 $ 1.3 $ 15.2
Luxury Franchise [Member]        
Business Acquisition [Line Items]        
Number of franchise acquired       1