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Stockholders' Equity (Details) - USD ($)
Nov. 14, 2014
Sep. 30, 2015
Dec. 31, 2014
Aug. 20, 2014
Aug. 17, 2012
Class of Stock [Line Items]          
Authorized repurchase amount   $ 1,200,000,000      
Common stock, par value (in dollars per share)   $ 0.01 $ 0.01 $ 0.01 $ 0.01
Maximum price of common stock available to be issued   $ 500,000,000   $ 500,000,000 $ 500,000,000
Commission to sales agent (as a percent)         2.00%
PPRLP Queens Portfolio          
Class of Stock [Line Items]          
Common stock issued $ 1,166,777,000        
PPRLP Queens Portfolio | Common Stock          
Class of Stock [Line Items]          
Number of shares 17,140,845