Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 3,604,272	$ 3,494,212
Accumulated depreciation	(1,483,107)	(1,428,555)
Property and equipment, net	2,121,165	2,065,657
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	268,316	267,051
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	2,547,565	2,440,471
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	707,836	647,988
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 80,555	$ 138,702

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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