Leases Cash paid for amounts included in the measurement of lease liabilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) tankContainer	Dec. 31, 2021 USD ($) tankContainer	Dec. 31, 2020 USD ($) tankContainer
Lessee, Lease Terms and Discount Rates [Abstract]
Operating Lease, Payments	$ 42.4	$ 40.5	$ 58.5
Lease, Payments	1.5	77.2	40.0
Lease, Payments	43.9	117.7	98.5
Non-cash financing lease transactions	$ 0.0	$ 45.1	$ 64.9
Number of railcars received | tankContainer	21	2,329	732