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Debt - Summary (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Principal outstanding $ 3,452,985 $ 3,266,099
Weighted Average Years(2)  4 years  
Long-term debt, gross $ 3,452,985 3,266,099
Stated interest rate 3.652%  
Debt Issuance Costs, Net $ (10,378) (11,665)
Unamortized fair market value discount $ (115) (119)
Weighted average interest rate 4.42%  
Unsecured Credit Facility    
Debt Instrument [Line Items]    
Principal outstanding $ 449,000 262,000
Weighted Average Years(2)  3 years 2 months 12 days  
Basis spread on variable rate 0.775%  
Unsecured Term Loans    
Debt Instrument [Line Items]    
Weighted Average Years(2)  2 years 7 months 6 days  
Long-term debt, gross $ 1,025,000 1,025,000
Weighted average interest rate 3.59%  
Unsecured Notes    
Debt Instrument [Line Items]    
Weighted Average Years(2)  4 years 10 months 24 days  
Long-term debt, gross $ 1,975,000 1,975,000
Weighted average interest rate 4.84%  
Mortgage Loans Payable    
Debt Instrument [Line Items]    
Weighted Average Years(2)  13 years 3 months 18 days  
Long-term debt, gross $ 3,985 $ 4,099
Mortgage Loans Payable | United of Omaha Life Insurance Company    
Debt Instrument [Line Items]    
Stated interest rate 3.71%