v3.26.1
Organization and Summary of Significant Accounting Policies - Schedule of Carrying Amounts and Classifications of Assets and Liabilities for Consolidated VIEs (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Variable Interest Entity [Line Items]      
Current assets $ 4,186 $ 4,133  
Total assets 8,959 8,954 $ 8,836
Current liabilities 3,816 3,687  
Noncurrent liabilities 3,055 3,109  
VIEs      
Variable Interest Entity [Line Items]      
Current assets 348 304  
Noncurrent assets 92 94  
Total assets 440 398  
Current liabilities 267 257  
Noncurrent liabilities 10 10  
Total liabilities $ 277 $ 267