v3.26.3
RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 4 Months Ended
Dec. 01, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Related Party Transaction [Line Items]              
Interest income   $ 0 $ 30        
Transaction Services Agreement Costs       $ 20   $ 30  
FedEx Corporation              
Related Party Transaction [Line Items]              
Retained ownership interest percentage, after spin-off       19.90%   19.90%  
Related Party              
Related Party Transaction [Line Items]              
Interest income       $ 0 $ 98 $ 0 $ 128
Customer receivables         2,100   2,800
Finance charges         $ 36   $ 48
Trade receivables $ 1,000