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Common Stock and Other Equity Related Transactions - Narratives (Details)
12 Months Ended
Oct. 15, 2019
May 10, 2016
USD ($)
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Jul. 30, 2020
$ / shares
Apr. 28, 2020
shares
Class of Stock              
Common stock, shares authorized (in shares)     600,000,000 400,000,000      
Stock split ratio 2            
Par or stated value per share (in usd per share) | $ / shares     $ 0.01 $ 0.01      
ESPP, purchase price discount (in percentage)   85.00%          
ESPP, issued during the period (in shares)     31,385 40,934 44,142    
ESPP, shares remaining for distribution (shares)     743,194        
Units of partnership interest (in shares)     10,479,194 10,491,222 11,491,932    
Share based payment award repurchased shares for taxes (in usd per share) | $ / shares     $ 73.12 $ 47.48 $ 48.12    
Percentage of ownership interests (in percentage)     94.60% 94.60% 94.00%    
Common OP Unitholders              
Class of Stock              
Ownership percentage by noncontrolling owners (in percentage)     5.40% 5.40% 6.00%    
Minimum              
Class of Stock              
Common stock, shares authorized (in shares)             400,000,000
Maximum              
Class of Stock              
Common stock, shares authorized (in shares)             600,000,000
ESPP authorized amount | $   $ 250,000          
Private Placement              
Class of Stock              
Par or stated value per share (in usd per share) | $ / shares           $ 0.01  
Aggregate offering price | $     $ 200,000,000.0        
Shares available for issuance (shares)     200,000,000.0