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Number Of Marine Terminals Sold

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

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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.

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Carrying amount as of the balance sheet date of known and reasonably estimable amounts of recoveries from third-parties pertaining to an entity's environmental remediation obligations. An entity's balance sheet may include several assets that relate to an environmental remediation obligation. Among them are the following: a. Receivables from other potentially responsible parties that are not providing initial funding; b. anticipated recoveries from insurers; and c. anticipated recoveries from prior owners as a result of indemnification agreements.

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Commitments and Contingencies (Details) $ in Millions	3 Months Ended			9 Months Ended
Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2020 USD ($)	Mar. 31, 2020 Terminal	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Terminal	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Oct. 04, 2017 facility
Loss Contingencies [Line Items]
Liabilities recognized for estimated environmental costs	$ 11.9			$ 11.9		$ 14.9
Environmental expenses	0.1		$ 0.8	1.3	$ 4.2
Receivables from insurance carriers related to environmental matters	1.8			$ 1.8		2.9
Number Of Marine Terminals Sold \| Terminal		3		3
Accounts Receivable [Member]
Loss Contingencies [Line Items]
Receivables from insurance carriers related to environmental matters	1.0			$ 1.0		1.8
Other Noncurrent Assets [Member]
Loss Contingencies [Line Items]
Receivables from insurance carriers related to environmental matters	0.8			0.8		$ 1.1
Performance Guarantee [Member] \| Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Guarantees, Fair Value Disclosure	0.6			0.6
Performance Guarantee [Member] \| Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Guarantees, Fair Value Disclosure	$ 10.2			$ 10.2
Powder Springs Logistics, LLC [Member]
Loss Contingencies [Line Items]
Interest in equity method investment	50.00%			50.00%
Powder Springs Logistics, LLC [Member] \| Guarantee of Indebtedness of Others [Member] \| Equity Method Investee [Member]
Loss Contingencies [Line Items]
Guarantees, Fair Value Disclosure	$ 0.4			$ 0.4
Interest in equity method investment	50.00%			50.00%
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 25.0			$ 25.0
Pending Litigation [Member] \| Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Loss Contingency, Alleged Patent Infringement, Number Of Facilities \| facility							9