v3.26.1
Borrowings - Narrative (Details) - Line of Credit
€ in Millions, £ in Millions
1 Months Ended 6 Months Ended
May 07, 2026
USD ($)
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2026
EUR (€)
Mar. 31, 2026
GBP (£)
Jun. 30, 2026
USD ($)
d
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
GBP (£)
Feb. 28, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jul. 31, 2024
USD ($)
lender
Secured Debt                      
Line of Credit Facility [Line Items]                      
Borrowings   $ 2,807,455,000       $ 2,807,455,000       $ 2,582,576,000  
Maximum borrowings   4,879,440,000       4,879,440,000          
Secured Debt | Term Lending Agreements                      
Line of Credit Facility [Line Items]                      
Borrowings   223,681,000       223,681,000       223,033,000  
Secured Debt | Term Lending Agreements | INCREF Lending II                      
Line of Credit Facility [Line Items]                      
Loans pledged as collateral   200,000,000.0       200,000,000.0          
Borrowings   155,681,000       155,681,000       155,033,000  
Maximum borrowings   300,000,000       300,000,000          
Secured Debt | Term Lending Agreements | INCREF Lending III                      
Line of Credit Facility [Line Items]                      
Loans pledged as collateral   85,300,000       85,300,000          
Borrowings   68,000,000       68,000,000       68,000,000  
Maximum borrowings   72,840,000       72,840,000          
Secured Debt | Master Repurchase Agreement | INCREF Repurchase II                      
Line of Credit Facility [Line Items]                      
Loans pledged as collateral                 $ 250,000,000.0    
Secured Debt | Secured Lending Agreements                      
Line of Credit Facility [Line Items]                      
Loans pledged as collateral                     $ 3,200,000,000
Number of financial institutions | lender                     7
Secured Debt | Secured Lending Agreements | INCREF Repurchase II                      
Line of Credit Facility [Line Items]                      
Loans pledged as collateral                 $ 146,300,000    
Borrowings   117,061,000       117,061,000          
Maximum borrowings   250,000,000       250,000,000          
Secured Debt | Secured Lending Agreements | Citibank                      
Line of Credit Facility [Line Items]                      
Borrowings   695,678,000       695,678,000 € 189.4 £ 192.8   590,401,000  
Added capacity   300,000,000.0                  
Maximum borrowings   1,300,000,000       1,300,000,000          
Secured Debt | Secured Lending Agreements | Wells Fargo                      
Line of Credit Facility [Line Items]                      
Borrowings   740,352,000       740,352,000 € 123.0 £ 248.3   340,664,000  
Added capacity     $ 700,000,000.0 € 123.0 £ 255.4            
Maximum borrowings   1,200,000,000 $ 1,200,000,000     1,200,000,000          
Revolving Credit Facility                      
Line of Credit Facility [Line Items]                      
Borrowings   100,000,000       100,000,000       $ 55,000,000  
Maximum borrowings   $ 100,000,000       $ 100,000,000          
Arranger fee (in percent) 0.50%                    
Accordion feature, increase limit $ 330,000,000.0                    
Extension option term (in years) 12 months                    
Revolving Credit Facility | Tranche A Facility                      
Line of Credit Facility [Line Items]                      
Maximum borrowings $ 0                    
Debt instrument, basis spread on variable rate 1.90%                    
Commitment fee (in percent) 0.25%                    
Accordion feature, increase limit $ 150,000,000.0                    
Revolving Credit Facility | Tranche B Facility                      
Line of Credit Facility [Line Items]                      
Maximum borrowings $ 100,000,000.0                    
Commitment fee (in percent) 1.00%                    
Accordion feature, increase limit $ 330,000,000.0                    
Revolving Credit Facility | Tranche B Facility | Minimum                      
Line of Credit Facility [Line Items]                      
Debt instrument, basis spread on variable rate 2.75%                    
Revolving Credit Facility | Tranche B Facility | Maximum                      
Line of Credit Facility [Line Items]                      
Debt instrument, basis spread on variable rate 3.25%                    
Revolving Credit Facility | Uncommitted Tranche, Subscription Agreements Credit Facility                      
Line of Credit Facility [Line Items]                      
Threshold business days | d           15          
Revolving Credit Facility | Funded Tranche, Subscription Agreements Credit Facility                      
Line of Credit Facility [Line Items]                      
Threshold years from issuance           3 years          
Threshold years from after notice | d           360          
Revolving Credit Facility | Subscription Agreements Credit Facility                      
Line of Credit Facility [Line Items]                      
Threshold days | d           30