Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
Total lease cost, net	$ 110.4	$ 99.3	$ 221.6	$ 196.6
ROU asset obtained in exchange for operating lease liability			27.5	69.8
ROU asset obtained in exchange for finance lease liability			$ 93.3	$ 0.2