Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 21,055,743	$ 20,219,954
Less — accumulated depreciation and amortization	(5,683,269)	(4,861,001)
Property and equipment, net	15,372,474	15,358,953
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	551,625	553,561
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,187,427	15,226,566
Furniture, Fixtures, Equipment And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,065,859	2,849,502
Transportation [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	454,278	439,976
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,796,554	$ 1,150,349