v3.26.1
Fair Value Measurement and Disclosures - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments $ 45,589 $ (1,578) $ 65,830 $ 4,751
Level III [Member]        
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments 13,737 (7,521) 23,759 (5,425)
Apollo Infrastructure Company LLC Series One [Member]        
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments 13,278 (518) 19,277 1,281
Apollo Infrastructure Company LLC Series One [Member] | Level III [Member]        
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments 4,154 (1,657) 7,155 (1,066)
Apollo Infrastructure Company LLC Series Two [Member]        
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments 32,311 (1,060) 46,553 3,470
Apollo Infrastructure Company LLC Series Two [Member] | Level III [Member]        
Summary of Investment Holdings [Line Items]        
Net change in unrealized appreciation/(depreciation) from investments $ 9,583 $ (5,864) $ 16,604 $ (4,359)