XML 237 R130.htm IDEA: XBRL DOCUMENT v3.21.2
Leases, SoCF (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Lessee, Lease, Description [Line Items]    
Operating cash flows for operating leases $ 53 $ 85
Operating cash flows for finance leases 39 33
Financing cash flows for finance leases 52 15
Lease assets obtained in exchange for lease obligations - finance 233 394
Lease assets obtained in exchange for lease obligations - operating $ (22) $ 110