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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2023
Dec. 31, 2022
Private perpetual preferred units, series 2019    
Capital:    
Private perpetual preferred units, liquidation preference (in USD per share) $ 13.52 $ 13.52
Private perpetual preferred units, issued (in shares) 4,664,038 4,664,000
Private perpetual preferred units, outstanding (in shares) 4,664,000 4,664,000
Private perpetual preferred units, series 2014    
Capital:    
Private perpetual preferred units, liquidation preference (in USD per share) $ 16.62 $ 16.62
Private perpetual preferred units, issued (in shares) 1,560,000 1,560,000
Private perpetual preferred units, outstanding (in shares) 1,560,000 1,560,000
Series PR Operating Partnership Units    
Capital:    
Limited partner operating partnership units, outstanding (in shares) 81,611,000 80,475,000
Series ES Operating Partnership Units Limited Partners    
Capital:    
Limited partner operating partnership units, outstanding (in shares) 20,426,000 21,081,000
Series 60 Operating Partnership Units Limited Partners    
Capital:    
Limited partner operating partnership units, outstanding (in shares) 5,380,000 5,558,000
Series 250 Operating Partnership Units Limited Partners    
Capital:    
Limited partner operating partnership units, outstanding (in shares) 2,669,000 2,789,000
ESRT | Series PR Operating Partnership Units    
Capital:    
General partner operating partnership units, outstanding (in shares) 2,709,000 2,710,000
Limited partner operating partnership units, outstanding (in shares) 158,122,000 158,420,000