v3.26.1
Investments - Schedule of Unobservable Inputs Used In The Fair Value Measurement Of Our Level 3 Investments (Details) - Level 3
$ in Thousands
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 20,240,457 $ 18,656,857
First Lien Secured Debt | Market Comparable Technique | Comparable Multiple    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure 0 6,762
First Lien Secured Debt | Discounted Cash Flow | Discount Rate    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 17,186,018 $ 16,295,125
First Lien Secured Debt | Discounted Cash Flow | Discount Rate | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.026 0.061
First Lien Secured Debt | Discounted Cash Flow | Discount Rate | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.576 0.482
First Lien Secured Debt | Discounted Cash Flow | Discount Rate | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.092 [1] 0.09 [2]
First Lien Secured Debt | Transactional Value | Cost Approach    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 2,877,170 $ 2,250,700
First Lien Secured Debt | Asset Recoverability | Recoverability    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 55,912 $ 45,807
First Lien Secured Debt | Asset Recoverability | Recoverability | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0 0
First Lien Secured Debt | Asset Recoverability | Recoverability | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 1 1
First Lien Secured Debt | Asset Recoverability | Recoverability | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.489 [1] 0.555 [2]
Unsecured Debt | Discounted Cash Flow | Discount Rate    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 49,435  
Unsecured Debt | Discounted Cash Flow | Discount Rate | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.072  
Unsecured Debt | Discounted Cash Flow | Discount Rate | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.143  
Unsecured Debt | Discounted Cash Flow | Discount Rate | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input [1] 0.107  
Unsecured Debt | Transactional Value | Cost Approach    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure   $ 35,077
Common Equity/Interests | Market Comparable Technique | Comparable Multiple    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 1,041 $ 2,140
Common Equity/Interests | Market Comparable Technique | Comparable Multiple | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 7 1.3
Common Equity/Interests | Market Comparable Technique | Comparable Multiple | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 21 20
Common Equity/Interests | Market Comparable Technique | Comparable Multiple | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 12.9 [1] 11.7 [2]
Common Equity/Interests | Discounted Cash Flow | Discount Rate    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 56,144  
Common Equity/Interests | Discounted Cash Flow | Discount Rate | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.111  
Common Equity/Interests | Discounted Cash Flow | Discount Rate | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.179  
Common Equity/Interests | Discounted Cash Flow | Discount Rate | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input [1] 0.145  
Common Equity/Interests | Transactional Value | Cost Approach    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 3,761 $ 13,853
Preferred Equity | Market Comparable Technique | Comparable Multiple    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 1,538 $ 131
Preferred Equity | Market Comparable Technique | Comparable Multiple | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 9 1.3
Preferred Equity | Market Comparable Technique | Comparable Multiple | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 16 6.5
Preferred Equity | Market Comparable Technique | Comparable Multiple | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 12.5 [1] 8.9 [2]
Preferred Equity | Discounted Cash Flow | Discount Rate    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 6,950 $ 7,163
Preferred Equity | Discounted Cash Flow | Discount Rate | Minimum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.116 0.116
Preferred Equity | Discounted Cash Flow | Discount Rate | Maximum    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.131 0.126
Preferred Equity | Discounted Cash Flow | Discount Rate | Weighted Average    
Schedule of Investments [Line Items]    
Quantitative Information on Unobservable input 0.124 [1] 0.121 [2]
Preferred Equity | Transactional Value | Cost Approach    
Schedule of Investments [Line Items]    
Assets Fair Value Disclosure $ 2,488 $ 99
[1] The weighted average information is generally derived by assigning each disclosed unobservable input a proportionate weight based on the fair value of the related investment. For the commodity price unobservable input, the weighted average price is an undiscounted price based upon the estimated production level from the underlying reserves.
[2] The weighted average information is generally derived by assigning each disclosed unobservable input a proportionate weight based on the fair value of the related investment. For the commodity price unobservable input, the weighted average price is an undiscounted price based upon the estimated production level from the underlying reserves.