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Debt - (Details)
1 Months Ended 12 Months Ended
Dec. 01, 2017
USD ($)
Mar. 07, 2017
USD ($)
Jul. 07, 2016
USD ($)
Oct. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
Dec. 31, 2021
extensionOption
Dec. 31, 2021
Rate
Oct. 13, 2021
USD ($)
Sep. 24, 2021
USD ($)
Aug. 11, 2016
USD ($)
Jan. 07, 2016
USD ($)
Debt                          
Payments for termination of swaps       $ 3,300,000                  
Debt, gross         $ 1,930,024,000 $ 1,449,001,000              
2021 Third Amended and Restated Credit Agreement                          
Debt                          
Current borrowing capacity                     $ 1,300,000,000    
Maximum borrowing capacity as a percentage of maximum principal amount                     10.00%    
Increase in maximum borrowing capacity                     $ 500,000,000    
Maximum borrowing capacity                     1,750,000,000    
Number of extension options | extensionOption               2          
Term of extension option         6 months                
Credit Agreement                          
Debt                          
Unused fee (as a percent)         0.20%                
Series A                          
Debt                          
Effective fixed interest rate                       4.09% 4.03%
Series B                          
Debt                          
Effective fixed interest rate                       4.18% 4.43%
Series C                          
Debt                          
Effective fixed interest rate                         4.57%
Series D                          
Debt                          
Effective fixed interest rate                         4.74%
LIBOR | Credit Agreement                          
Debt                          
Reference rate (as a percent)         0.85%                
Credit Agreement                          
Debt                          
Current borrowing capacity         $ 726,000,000                
Amount outstanding         $ 274,000,000                
Credit Agreement | 2021 Third Amended and Restated Credit Agreement                          
Debt                          
Current borrowing capacity                     1,000,000,000    
Term Loan                          
Debt                          
Amount outstanding     $ 250,000,000             $ 250,000,000      
Term Loan | 2021 Third Amended and Restated Credit Agreement                          
Debt                          
Current borrowing capacity                     $ 250,000,000    
Term Loan | Credit Agreement                          
Debt                          
Debt instrument, term     7 years                    
Unsecured Debt | Interest Rate Swaps                          
Debt                          
Fixed interest rate           1.07% 3.33%   2.07%        
Unsecured Debt | LIBOR | Interest Rate Swaps                          
Debt                          
Fixed interest rate     1.07%       1.43%            
Unsecured Debt | LIBOR | Credit Agreement                          
Debt                          
Reference rate (as a percent)     1.00%   1.90% 1.00%              
Senior Notes                          
Debt                          
Fixed interest rate 3.95% 4.30%                      
Total mortgage debt $ 350,000,000 $ 400,000,000                   $ 75,000,000 $ 150,000,000
Debt instrument, redemption price, percentage 99.78% 99.68%                      
Proceeds from issuance of debt $ 347,000,000 $ 396,100,000                      
Senior Notes | Series A                          
Debt                          
Total mortgage debt                       25,000,000 15,000,000
Senior Notes | Series B                          
Debt                          
Total mortgage debt                       25,000,000 45,000,000
Senior Notes | Series C                          
Debt                          
Total mortgage debt                       $ 25,000,000 45,000,000
Effective fixed interest rate                       4.24%  
Senior Notes | Series D                          
Debt                          
Total mortgage debt                         $ 45,000,000
Senior Notes | 2.625% Senior Notes, Due November 2031                          
Debt                          
Total mortgage debt                   $ 500,000,000      
Effective fixed interest rate                   2.625%      
Debt instrument, redemption price, percentage       99.79%                  
Proceeds from issuance of long-term debt       $ 495,100,000                  
Operating Partnership | Credit Agreement                          
Debt                          
Debt instrument, interest rate, effective percentage           3.49% 3.20%            
Operating Partnership | Credit Agreement | LIBOR                          
Debt                          
Reference rate (as a percent)         0.10% 0.15%              
Operating Partnership | Credit Agreement | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate                          
Debt                          
Reference rate (as a percent)         0.05%