Components of Deferred Tax Assets and Deferred Tax Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets Liabilities [Line Items]
Provision for accrued expenses	$ 76,538	$ 48,382
Occupancy tax reserve	52,624	15,322
Net operating loss and tax credit carryforwards	32,765	28,430
Stock-based compensation	29,330	45,149
Other	31,683	23,546
Total deferred tax assets	222,940	160,829
Less valuation allowance	(12,695)	(23,422)
Net deferred tax assets	210,245	137,407
Prepaid merchant bookings and prepaid expenses	(49,859)	(59,333)
Intangible assets	(282,570)	(249,729)
Investment in subsidiaries	(8,009)	(9,603)
Unrealized gains	(15,396)	(13,106)
Property and equipment	(93,867)	(69,581)
Other	(1,276)	(534)
Total deferred tax liabilities	(450,977)	(401,886)
Net deferred tax liability	$ (240,732)	$ (264,479)