Leases (Presentation on Consolidated Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease ROU asset, other noncurrent assets	$ 694.7	$ 566.2
Operating lease liabilities, payables and accrued liabilities	90.0	78.6
Operating lease liabilities, noncurrent	592.1	503.4
Total operating lease liabilities	$ 682.1	$ 582.0
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other noncurrent assets	Other noncurrent assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts Payable and Accrued Liabilities, Current	Accounts Payable and Accrued Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities	Other noncurrent liabilities