Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits - Narrative (Details)

v3.22.2
Retirement Benefits - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Retirement Benefits [Abstract]        
Defined contribution plan expense $ 4.1 $ 3.6 $ 12.5 $ 10.9