v3.26.3
DEBT - Schedule of Term Loans (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Sep. 30, 2026
Sep. 30, 2025
Debt Instrument [Line Items]      
Gross Amount   $ 34,124 $ 29,520
Term loans      
Debt Instrument [Line Items]      
Gross Amount   $ 12,803 11,124
Tranche J | Term loans      
Debt Instrument [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
Gross Amount   $ 3,559 3,595
Tranche K | Term loans      
Debt Instrument [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.25%  
Gross Amount   $ 3,508 3,544
Tranche L | Term loans      
Debt Instrument [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
Gross Amount   $ 1,470 1,485
Tranche M | Term loans      
Debt Instrument [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
Gross Amount   $ 2,475 2,500
Tranche N | Term loans      
Debt Instrument [Line Items]      
Debt Instrument, Basis Spread on Variable Rate 2.50% 2.50%  
Gross Amount   $ 1,791 $ 0