Supplemental Cash Flow and Noncash Investing Transactions (Details Textual) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) tankContainer	Dec. 31, 2021 USD ($) tankContainer
Noncash or Part Noncash Divestitures [Line Items]
Portfolio proceeds \| $	$ 272.8	$ 269.6	$ 187.1
Number of railcars received \| tankContainer		21	2,329

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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