Property and Equipment, Net - Summary of Assets Held for Sale and Liabilities Related to Assets Held for Sale (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Property and equipment, net:
Assets Held for Sale	$ 310,902
Liabilities Related to Assets Held for Sale:
Liabilities related to assets held for sale	46,279
Land [Member]
Property and equipment, net:
Assets Held for Sale	89,130
Building and Building Improvements [Member]
Property and equipment, net:
Assets Held for Sale	162,530
Other Lessor Related Assets [Member]
Property and equipment, net:
Assets Held for Sale	59,242
Tenant Improvement Obligations and Other Lessor Liabilities [Member]
Liabilities Related to Assets Held for Sale:
Liabilities related to assets held for sale	$ 46,279