Business Combination - Allocation of Purchase Price (Detail) - KTR Capital Partners and Affiliates [Member] $ in Thousands	May 29, 2015 USD ($)
Business Acquisition [Line Items]
Investments in real estate properties	$ 5,441,384
Intangible assets, net of intangible liabilities	332,708
Accounts receivable and other assets	8,062
Debt, including premium	(735,172)
Accounts payable, accrued expenses and other liabilities	(56,313)
Total estimated purchase price	4,990,669
Noncontrolling interests	(2,253,234)
Common limited partnership units issued in the Operating Partnership	(181,170)
Total purchase price	$ 2,556,265