XML 60 R83.htm IDEA: XBRL DOCUMENT v3.19.3
Leases (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Leases [Abstract]      
Rent expense $ 28.7 $ 33.0 $ 34.8