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Stockholders' Equity / Partners' Capital Narrative (Details)
$ / shares in Units, $ in Millions
9 Months Ended
May 22, 2020
USD ($)
yr
Sep. 30, 2020
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
Mar. 27, 2018
$ / shares
Jun. 02, 2017
USD ($)
Class of Stock [Line Items]          
Common Stock, Shares, Outstanding   155,636,300 154,790,298    
General Partners' Capital Account, Units Outstanding (in units)   1,730,948      
Limited Partners' Capital Account, Units Outstanding (in units)   153,905,352      
Options exercised   43,792      
Shares of Common Stock issued in connection with redemption of an equal number of OP Units (in shares)   773,858      
ATM Program [Member]          
Class of Stock [Line Items]          
At The Market Stock Offering Program Aggregate Value Of Common Stock | $ $ 600.0       $ 600.0
At Market Stock Offering Program Maximum Length Of Sale (in years) | yr 3        
Series B Cumulative Redeemable Preferred Stock / Unit [Member]          
Class of Stock [Line Items]          
Series B, Shares Outstanding (in shares)   80,000 80,000    
Series B, Dividend Rate, Percentage   5.25%      
Series B, Liquidation Preference Per Share (dollars per share) | $ / shares   $ 2,500.00 $ 2,500 $ 2,500.00  
Depositary shares of Series B Cumulative Redeemable Preferred [Member]          
Class of Stock [Line Items]          
Series B, Shares Outstanding (in shares)   8,000,000      
Series B, Liquidation Preference Per Share (dollars per share) | $ / shares   $ 25.00   $ 25.00