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Unsecured Debt - Summary (Details)
1 Months Ended 12 Months Ended
Nov. 30, 2016
USD ($)
Dec. 31, 2021
USD ($)
lineOfCredit
extension
Dec. 31, 2020
USD ($)
Oct. 31, 2016
USD ($)
Debt Instrument [Line Items]        
Unsecured debt, net   $ 5,307,196,000 $ 5,607,985,000  
Lines of credit   341,257,000 0  
Total unsecured debt   5,648,453,000 5,607,985,000  
Unamortized debt issuance expense   $ 1,500,000 1,800,000  
Number of outstanding lines of credit | lineOfCredit   2    
Unsecured bonds private placement - fixed rate        
Debt Instrument [Line Items]        
Unsecured debt, net   $ 0 199,950,000  
Term loan - variable rate        
Debt Instrument [Line Items]        
Unsecured debt, net $ 350,000,000 $ 0 $ 550,000,000 $ 225,000,000
Weighted average interest rate   0.00% 1.70%  
Basis spread on rate 0.95%      
Term loan - variable rate | Carrying Value        
Debt Instrument [Line Items]        
Unsecured debt, net   $ 0 $ 549,380,000  
Bonds public offering - fixed rate        
Debt Instrument [Line Items]        
Unsecured debt, net   $ 5,307,196,000 $ 4,858,655,000  
Weighted average interest rate   3.30% 3.40%  
Weighted Average Maturity In Years as of December 31, 2021   8 years 8 months 12 days    
Unsecured Line of Credit        
Debt Instrument [Line Items]        
Lines of credit   $ 341,257,000 $ 0  
Weighted average interest rate   1.00% 1.00%  
Unsecured Debt        
Debt Instrument [Line Items]        
Debt instrument, unamortized discount (premium), net   $ 9,900,000 $ 10,100,000  
Unamortized debt issuance expense   32,900,000 31,900,000  
Line of Credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity   $ 1,240,000,000    
Number of extension options | extension   3    
Term extension period   6 months    
Line of Credit | LIBOR        
Debt Instrument [Line Items]        
Basis spread on rate   0.775%    
Working Capital Unsecured Line of Credit | Line of Credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity   $ 35,000,000    
Working Capital Unsecured Line of Credit | Line of Credit | LIBOR        
Debt Instrument [Line Items]        
Basis spread on rate   0.775%    
Unsecured Line of Credit | Line of Credit        
Debt Instrument [Line Items]        
Lines of credit   $ 340,000,000 0  
Unamortized debt issuance expense   4,400,000 $ 3,700,000  
Maximum borrowing capacity   $ 1,200,000,000    
Number of extension options | extension   3    
Term extension period   6 months    
Unsecured Line of Credit | Line of Credit | LIBOR        
Debt Instrument [Line Items]        
Basis spread on rate   0.775%