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Debt Obligations, net - Narrative (Details)
$ in Millions
 1 Months Ended 9 Months Ended 12 Months Ended
Sep. 12, 2025
Oct. 31, 2025
USD ($)
Nov. 30, 2024
USD ($)
Apr. 30, 2024
USD ($)
Option
Feb. 29, 2024
USD ($)
Jan. 31, 2023
USD ($)
May 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Nov. 30, 2021
USD ($)
May 31, 2021
USD ($)
Mar. 31, 2021
USD ($)
Option
Sep. 30, 2025
USD ($)
Dec. 31, 2024
Jun. 30, 2024
USD ($)
Mar. 31, 2024
Option
Dec. 31, 2021
USD ($)
Secured Debt | Mortgages                                
Line of Credit Facility [Line Items]                                
Weighted average interest rate                       3.99% 3.99%      
Unsecured Debt | 2.80% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount                   $ 400.0            
Stated interest rate                   2.80%   2.80% 2.80%      
Percent of par value at which the notes were issued                   99.127%            
Percentage of principal amount of debt at which debt can be redeemed                   100.00%            
Unsecured Debt | 2.85% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount                 $ 350.0              
Stated interest rate                 2.85%     2.85% 2.85%      
Percent of par value at which the notes were issued                 99.123%              
Percentage of principal amount of debt at which debt can be redeemed                 100.00%              
Unsecured Debt | 6.10% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount         $ 300.0                      
Stated interest rate         6.10%             6.10% 6.10%      
Percent of par value at which the notes were issued         98.957%                      
Percentage of principal amount of debt at which debt can be redeemed         100.00%                      
Unsecured Debt | 5.65% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount     $ 400.0                          
Stated interest rate     5.65%                 5.65% 5.65%      
Percent of par value at which the notes were issued     98.812%                          
Percentage of principal amount of debt at which debt can be redeemed     100.00%                          
Unsecured Debt | 3.98% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount               $ 475.0                
Stated interest rate               3.98%       3.98% 3.98%      
Minimum percentage of aggregate principal amount that can be repaid at any time at the Company's discretion               5.00%                
Percentage of principal amount of debt at which debt can be redeemed               100.00%                
Unsecured Debt | 5.15% Senior Notes                                
Line of Credit Facility [Line Items]                                
Aggregate principal amount             $ 150.0                  
Stated interest rate             5.15%         5.15% 5.15%      
Stairstep interest rate, Years 1 through 10             2.50%                  
Stairstep interest rate, Years 11 through 20             3.75%                  
Stairstep interest rate, Years 21 through 30             5.15%                  
Minimum percentage of aggregate principal amount that can be repaid at any time at the Company's discretion             5.00%                  
Percentage of principal amount of debt at which debt can be redeemed             100.00%                  
Unsecured Debt | Trust Preferred Securities                                
Line of Credit Facility [Line Items]                                
Basis point spread on variable interest rate (percent)                       1.50% 1.50%      
Debt Instrument, Variable Interest Rate, Type                       us-gaap:SecuredOvernightFinancingRateSofrMember        
Unsecured Debt | Commercial Paper Notes                                
Line of Credit Facility [Line Items]                                
Commercial paper notes available for issue                           $ 750.0    
Commercial paper notes outstanding balance                       $ 0.0        
Unsecured Debt | 2021 Unsecured Revolver                                
Line of Credit Facility [Line Items]                                
Maximum borrowing capacity                     $ 1,000.0         $ 1,350.0
Number of extension options available | Option                     2          
Number of extension options exercised | Option                             1  
Debt extension term                     12 months          
Basis point spread on variable interest rate (percent)                     0.90%          
Debt Instrument, Variable Interest Rate, Type                     us-gaap:SecuredOvernightFinancingRateSofrMember          
Repayment of outstanding balance at termination       $ 916.0                        
Unsecured Debt | 2023 Unsecured Revolver                                
Line of Credit Facility [Line Items]                                
Maximum borrowing capacity           $ 500.0                    
Basis point spread on variable interest rate (percent)           0.90%                    
Debt Instrument, Variable Interest Rate, Type           us-gaap:SecuredOvernightFinancingRateSofrMember                    
Unsecured Debt | 2024 Unsecured Revolver maturing in 2029                                
Line of Credit Facility [Line Items]                                
Maximum borrowing capacity       $ 2,000.0                        
Number of extension options available | Option       2                        
Debt extension term       6 months                        
Basis point spread on variable interest rate (percent) 0.85%                     0.85% 0.85%      
Debt Instrument, Variable Interest Rate, Type us-gaap:SecuredOvernightFinancingRateSofrMember                              
Line of credit facility fee, percent       0.10%                        
Remaining borrowing capacity                       $ 1,100.0        
Minimum | Unsecured Debt | Unsecured Senior Notes                                
Line of Credit Facility [Line Items]                                
Unencumbered assets to unsecured debt ratio                       1.25        
Minimum | Unsecured Debt | 2024 Unsecured Revolver maturing in 2029                                
Line of Credit Facility [Line Items]                                
Unencumbered assets to unsecured debt ratio                       1.33        
Debt instrument covenant multiple of minimum fixed charges on outstanding borrowings                       1.15        
Maximum | Unsecured Debt | 6.10% Senior Notes                                
Line of Credit Facility [Line Items]                                
Covenant description secured recourse debt ratio maximum                       50.00%        
Subsequent Event | Secured Debt | Mortgages                                
Line of Credit Facility [Line Items]                                
Principal amount of debt obligations   $ 227.0                            
Defeasance expense   $ 2.3