Business Combinations (Unaudited Pro forma Information) (Details) - Parent Company [Member] - Post [Member] [Domain] $ in Thousands	Dec. 01, 2016 USD ($)
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ 4,743,341
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	732,442
Business Acquisition, Cost of Entity Acquired, Purchase Price	4,000,000
Land [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	875,332
Building and Building Improvements [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	3,397,496
Furniture Fixtures And Equipment [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	81,243
Construction in Progress [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	183,881
Unimproved Land [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	24,200
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	3,610
Real Estate Investment [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	44,435
Finite-Lived Intangible Assets, Major Class Name [Domain]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	53,192
Cash and Cash Equivalents [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	34,292
Restricted Cash [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	3,608
Other Assets [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	42,052
Debt [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Liabilities Assumed	(595,609)
Interest Rate Cash Flow Hedge Liability at Fair Value [Domain]
Business Acquisition [Line Items]
Business Acquisition, PPA, Liabilities Assumed	(2,118)
Other Current Liabilities [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Assets Acquired	(1,661)
Other Liabilities [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Liabilities Assumed	(133,054)
Noncontrolling Interest [Member]
Business Acquisition [Line Items]
Business Acquisition, PPA, Liabilities Assumed	$ (2,306)