Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table provides information about disaggregated revenue:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Transportation services revenue - third parties	$	0.8	$	0.7	$	1.8	$	1.5
Transportation services revenue - related parties	30.7		27.9		60.4		57.3
Total revenue	$	31.5	$	28.6	$	62.2	$	58.8

Summary of Remaining Performance Obligation, Expected Timing of Satisfaction

The fixed portion of existing customer contracts are summarized in the future performance obligations as of June 30, 2020. The unfulfilled performance obligations included in the table below are expected to be recognized in revenue in the specified periods:

	As of June 30, 2020
Remainder of 2020	$	63.9
2021	1.7
Total	$	65.6

Summary of Contract with Customer, Assets and Liabilities

The following table provides information about receivables from contracts with customers, contract assets and contract liabilities:

	June 30, 2020		December 31, 2019
Receivables from contracts with customers - third parties	$	0.2	$	0.6
Receivables from contracts with customers - related parties	10.7		11.3
Deferred revenue and credits - related parties	1.6		1.5