v3.25.0.1
Debt - Summary (Details)
$ in Thousands
12 Months Ended 17 Months Ended
Sep. 01, 2022
Dec. 31, 2024
USD ($)
extention
Rate
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 29, 2024
Jan. 15, 2025
Rate
Debt Instrument [Line Items]            
Principal outstanding   $ 3,029,135 $ 2,624,046      
Long-Term Debt, Gross   3,038,322 2,631,537      
Debt Issuance Costs, Net   $ 9,060 7,355      
Weighted average interest rate | Rate   3.98%        
Remaining borrowing capacity   $ 586,800        
Amortization of deferred financing fees and debt issuance costs and fair market value discount       $ 3,747    
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   Secured Overnight Financing Rate (SOFR)        
Minimum            
Debt Instrument [Line Items]            
Line of Credit Facility, Commitment Fee Percentage   0.10%        
Maximum            
Debt Instrument [Line Items]            
Line of Credit Facility, Commitment Fee Percentage   0.30%        
Interest Rate Swaps            
Debt Instrument [Line Items]            
Notional amount fixed and used to calculate interest   $ 1,025,000        
Interest Expense [Member]            
Debt Instrument [Line Items]            
Amortization of deferred financing fees and debt issuance costs and fair market value discount   4,506 3,905      
Facility, unused, and other fees   1,765 1,759 $ 1,548    
Accounts Payable and Accrued Liabilities [Member]            
Debt Instrument [Line Items]            
Interest payable   13,700 14,600      
Unsecured Credit Facility            
Debt Instrument [Line Items]            
Principal outstanding   $ 409,000 402,000      
Debt Instrument, Maturity Date   Sep. 07, 2029        
Debt Instrument, Interest Rate, Increase (Decrease)   (0.10%)        
Unsecured Term Loan A            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Mar. 15, 2027        
Unsecured Term Loan F(5)            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Mar. 23, 2029        
Unsecured Term Loan F(5) | Forecast [Member]            
Debt Instrument [Line Items]            
Fixed Interest Rate (as a percent) | Rate           3.98%
Unsecured Term Loan F(5) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Increase (Decrease)   (0.10%)        
Series A Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Oct. 01, 2024        
Series D Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Feb. 20, 2025        
Series G Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Jun. 13, 2025        
Series B Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Jul. 01, 2026        
Series C Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Dec. 30, 2026        
Series E Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Feb. 20, 2027        
Series H Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Jun. 13, 2028        
$175 Million Series L Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   May 28, 2029        
$125 Million Series M Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   May 28, 2031        
$275 Million Series I Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Sep. 29, 2031        
$400 Million Series K Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Jun. 28, 2032        
$50 Million Series J Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Sep. 28, 2033        
$150 Million Series N Unsecured Notes            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   May 28, 2034        
United of Omaha Life Insurance Company            
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date   Oct. 01, 2039        
Term Loans A,F,G | Secured Overnight Financing Rate (SOFR)            
Debt Instrument [Line Items]            
Interest rate margin (as a percent) | Rate   0.85%        
Term Loans H, I            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Increase (Decrease)         0.02%  
Unsecured Credit Facility            
Debt Instrument [Line Items]            
Principal outstanding   $ 409,000 402,000      
Maximum borrowing capacity   $ 1,000,000        
Number Of Extensions | extention   2        
Extension Period   6 months        
Unsecured Credit Facility | Prepaid Expenses and Other Assets            
Debt Instrument [Line Items]            
Debt Issuance Costs, Net   $ 10,100 3,300      
Unsecured Credit Facility | Secured Overnight Financing Rate (SOFR)            
Debt Instrument [Line Items]            
Interest rate margin (as a percent)   0.775%        
Unsecured Term Loans            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 1,025,000 1,025,000      
Debt Issuance Costs, Net   3,152 3,227      
Unsecured Term Loans | Term Loan [Member]            
Debt Instrument [Line Items]            
Principal outstanding   1,021,848 1,021,773      
Unsecured Term Loans | Unsecured Term Loan G            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 300,000 300,000      
Stated interest rate | Rate   1.80%        
Debt Instrument, Maturity Date   Feb. 05, 2026        
Fixed Interest Rate (as a percent) | Rate   0.95%        
Unsecured Term Loans | Unsecured Term Loan A            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 150,000 150,000      
Stated interest rate | Rate   2.16%        
Fixed Interest Rate (as a percent) | Rate   1.31%        
Unsecured Term Loans | Unsecured Term Loan H            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 187,500 187,500      
Stated interest rate | Rate   3.35%        
Debt Instrument, Maturity Date   Jan. 25, 2028        
Fixed Interest Rate (as a percent)   2.50%        
Unsecured Term Loans | Unsecured Term Loan I            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 187,500 187,500      
Stated interest rate | Rate   3.51%        
Debt Instrument, Maturity Date   Jan. 25, 2028        
Fixed Interest Rate (as a percent)   2.66%        
Unsecured Term Loans | Unsecured Term Loan F(5)            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 200,000 200,000      
Stated interest rate | Rate   2.96%        
Fixed Interest Rate (as a percent) | Rate   2.11%        
Unsecured Term Loans | Unsecured Term Loan F(5) | Forecast [Member]            
Debt Instrument [Line Items]            
Fixed Interest Rate (as a percent)           3.98%
Unsecured Term Loans | Term Loans A,F,G            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Increase (Decrease) (0.10%)          
Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 1,600,000 1,200,000      
Debt Issuance Costs, Net   5,908 4,128      
Unsecured Notes | Unsecured Notes [Member]            
Debt Instrument [Line Items]            
Principal outstanding   1,594,092 1,195,872      
Unsecured Notes | Series A Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 0 50,000      
Stated interest rate | Rate   4.98%        
Unsecured Notes | Series D Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 100,000 100,000      
Stated interest rate | Rate   4.32%        
Unsecured Notes | Series G Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 75,000 75,000      
Stated interest rate | Rate   4.10%        
Unsecured Notes | Series B Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 50,000 50,000      
Stated interest rate | Rate   4.98%        
Unsecured Notes | Series C Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 80,000 80,000      
Stated interest rate | Rate   4.42%        
Unsecured Notes | Series E Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 20,000 20,000      
Stated interest rate | Rate   4.42%        
Unsecured Notes | Series H Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 100,000 100,000      
Stated interest rate | Rate   4.27%        
Unsecured Notes | $175 Million Series L Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 175,000 0      
Stated interest rate | Rate   6.05%        
Unsecured Notes | $125 Million Series M Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 125,000 0      
Stated interest rate | Rate   6.17%        
Unsecured Notes | $275 Million Series I Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 275,000 275,000      
Stated interest rate | Rate   2.80%        
Unsecured Notes | $400 Million Series K Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 400,000 400,000      
Stated interest rate | Rate   4.12%        
Unsecured Notes | $50 Million Series J Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 50,000 50,000      
Stated interest rate | Rate   2.95%        
Unsecured Notes | $150 Million Series N Unsecured Notes            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 150,000 0      
Stated interest rate | Rate   6.30%        
Mortgage Loans Payable            
Debt Instrument [Line Items]            
Principal outstanding   $ 4,195 4,401      
Long-Term Debt, Gross   4,322 4,537      
Debt Instrument, Unamortized Discount (Premium), Net   (127) (136)      
Mortgage Loans Payable | United of Omaha Life Insurance Company            
Debt Instrument [Line Items]            
Long-Term Debt, Gross   $ 4,322 $ 4,537      
Stated interest rate | Rate   3.71%