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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, 2019
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Dec. 31, 2017
$ / shares
shares
Apr. 30, 2019
shares
Apr. 29, 2019
shares
Oct. 26, 2018
USD ($)
$ / shares
Class of Stock                
Common stock, shares authorized (shares)     400,000,000 200,000,000   400,000,000 200,000,000  
Stock split ratio 2              
Par or stated value per share (usd per share) | $ / shares     $ 0.01 $ 0.01        
ESPP, purchase price discount (in percentage)   85.00%            
ESPP, issued during the period (in shares)     40,934 44,142 49,430      
ESPP, shares remaining for distribution (shares)     774,579          
Units of partnership interest (in shares)     10,491,222 11,491,932 11,668,200      
Share based payment award repurchased shares for taxes (usd per share) | $ / shares     $ 47.48 $ 48.12 $ 44.51      
Percentage of ownership interests (in percentage)     94.60% 94.00% 93.80%      
Ownership percentage by noncontrolling owners (in percentage)     5.40% 6.00% 6.20%      
Maximum                
Class of Stock                
ESPP authorized amount | $   $ 250,000            
Private Placement                
Class of Stock                
Par or stated value per share (usd per share) | $ / shares               $ 0.01
Aggregate offering price | $               $ 200,000,000.0
Shares available for issuance (shares)     140,700,000