The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									$ 468.6
Lease revenue - related parties									56.1
Total revenue	$ 142.3	$ 153.5	$ 129.3	$ 99.6	$ 126.8	$ 121.8	$ 112.4	$ 109.1	524.7	$ 470.1	$ 452.9
Transportation Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									377.0	399.1	422.6
Terminaling Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									45.7	0.0	0.0
Storage Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									15.2	14.7	17.2
Product Revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									30.7	0.0	0.0
Third Parties \| Transportation Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									200.9	226.9	242.9
Third Parties \| Terminaling Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									0.0	0.0	0.0
Third Parties \| Storage Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									8.5	8.7	8.6
Third Parties \| Product Revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									2.2	0.0	0.0
Related Parties
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Lease revenue - related parties									56.1	56.3	13.1
Related Parties \| Transportation Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									176.1	172.2	179.7
Related Parties \| Terminaling Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									45.7	0.0	0.0
Related Parties \| Storage Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									6.7	6.0	8.6
Related Parties \| Product Revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									28.5	$ 0.0	$ 0.0
Related Parties \| Transportation Services Nonlease Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									$ 4.7