Lease Commitments - Schedule of Lease Balances on the Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease assets	$ 248.1	$ 226.1
Total finance lease assets	217.1	195.4
Finance Lease, Right-of-Use Asset, Accumulated Amortization	(34.2)	(20.1)
Total Operating And Finance Lease, Right-Of-Use Asset	431.0	401.4
Operating lease liabilities, current	26.8	24.5
Finance lease liabilities, current	10.6	8.8
Operating lease liabilities, noncurrent	229.2	208.0
Finance lease liabilities, noncurrent	189.8	177.4
Total Operating And Finance Lease, Liability	$ 456.4	$ 418.7
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities	Other noncurrent liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities	Other noncurrent liabilities