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Summary Of Significant Accounting Policies of Tax Treatment of Common Dividends Per Share for Federal Tax Purposes (Details) - $ / shares
 3 Months Ended 12 Months Ended
Oct. 31, 2025
Jul. 31, 2025
Apr. 30, 2025
Jan. 30, 2025
Oct. 31, 2024
Jul. 31, 2024
Apr. 30, 2024
Jan. 30, 2024
Oct. 31, 2023
Jul. 31, 2023
Apr. 28, 2023
Jan. 30, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 18, 2025
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends treatment for federal tax purposes.                             $ 3.64 [1] $ 3.65 [2] $ 4.16 [3]  
Dividends Treatment For Federal Tax Purposes, Percentage                             100.00% 100.00% 100.00%  
Distributions Payable, Amount Per Unit                                   $ 0.70
Dividends, Per Unit, Cash Paid $ 0.70 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98 $ 0.98        
Tax Year 2024                                    
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends, Per Unit, Cash Paid                           0.71        
Tax Year 2023                                    
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends, Per Unit, Cash Paid                           $ 0.27        
Ordinary income                                    
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends treatment for federal tax purposes.                             $ 2.35 $ 3.22 $ 3.04  
Dividends Treatment For Federal Tax Purposes, Percentage                             64.52% 88.29% 72.98%  
Capital Gain Income                                    
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends treatment for federal tax purposes.                             $ 1.29 $ 0.03 $ 1.12  
Dividends Treatment For Federal Tax Purposes, Percentage                             35.48% 0.79% 27.02%  
Return of Capital                                    
Summary Of Significant Accounting Policies [Line Items]                                    
Dividends treatment for federal tax purposes.                             $ 0 $ 0.40 $ 0  
Dividends Treatment For Federal Tax Purposes, Percentage                             0.00% 10.92% 0.00%  
[1] The fourth quarter 2025 regular quarterly dividend was $0.70 per common share, all of which was allocated to 2026.
[2] The fourth quarter 2024 regular quarterly dividend was $0.98 per common share, all of which was allocated to 2025.
[3] The fourth quarter 2023 regular quarterly dividend was $0.98 per common share, of which approximately $0.27 per common share was allocated to 2023 and approximately $0.71 per common share was allocated to 2024.