Fixed Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Depreciation expense			$ 62,428	$ 32,771
Impairment charges	$ 1,100	$ 400	18,800	4,100
Occupancy and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense	8,700	7,000	24,200	22,300
Software development costs capitalized	5,500	2,500	12,500	9,700
Amortization of software development costs	5,800	$ 3,100	17,000	$ 8,300
Leasehold Improvements and Other Fixed Assets [Member]
Property, Plant and Equipment [Line Items]
Asset retirement obligations	$ 4,000		$ 4,000