Leases - Operating Lease Maturity (Details) $ in Millions	Sep. 30, 2023 USD ($)
Finance Leases
2024	$ 7.0
2025	3.4
2026	0.0
2027	0.0
2028	0.0
Thereafter	0.0
Total undiscounted lease payments	10.4
Less: Imputed interest	(0.3)
Total lease liabilities	10.1
Operating Leases
2024	93.5
2025	82.9
2026	64.4
2027	49.1
2028	35.4
Thereafter	73.9
Total undiscounted lease payments	399.2
Less: Imputed interest	(30.5)
Total lease liabilities	$ 368.7