XML 77 R62.htm IDEA: XBRL DOCUMENT v3.23.3
Property and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Property Plant And Equipment [Abstract]      
Depreciation $ 32.3 $ 16.7 $ 13.9