XML 71 R95.htm IDEA: XBRL DOCUMENT v3.19.3
Lease Commitments - Schedule of Rent Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Operating Leases, Rent Expense [Abstract]      
Minimum rentals (including rentals under short-term leases) $ 42 $ 46 $ 40
Sublease rental income (1) (1) (2)
Rent expense $ 41 $ 45 $ 38