XML 48 R37.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Sep. 30, 2023
Variable Interest Entity [Line Items]    
Assets $ 8,731 $ 8,545
Liabilities 8,146 8,115
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Assets 73 5
Liabilities $ 2 $ 2