Annual report pursuant to Section 13 and 15(d)

EARNINGS PER SHARE - Narrative (Details)

v3.22.4
EARNINGS PER SHARE - Narrative (Details)
 12 Months Ended
Dec. 31, 2022
shares
Dec. 31, 2021
shares
LTIP units with vesting based on service or market condition    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Equity interests excluded from computation of diluted earnings per share (in units) 415,269  
LTIP units with vesting based on future acquisitions    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Equity interests excluded from computation of diluted earnings per share (in units) 252,894  
OP units, DownREIT OP units, Subordinated performance units, DownREIT subordinated performance units, Vested LTIP units    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Equity interests excluded from computation of diluted earnings per share (in units) 58,700,000 48,200,000
OP units | NSA OP, LP    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Unit conversion ratio 1  
Minimum conversion period (in years) 1 year  
OP units | DownREIT Partnership    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Unit conversion ratio 1  
Minimum conversion period (in years) 5 years  
LTIP units | NSA OP, LP    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Unit conversion ratio 1  
Subordinated performance units | NSA OP, LP    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Minimum conversion period (in years) 2 years  
Subordinated performance units | DownREIT Partnership    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Unit conversion ratio 1  
Minimum conversion period (in years) 5 years  
Subordinated performance units | NSA OP, LP And DownREIT Partnership    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Unit conversion ratio 1  
Minimum conversion period (in years) 2 years