Revenue Recognition (Tables)

3 Months Ended

6 Months Ended

Mar. 31, 2021

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table provides information about disaggregated revenue:

	Three Months Ended March 31,
	2021		2020
Transportation services revenue – third parties	$	0.8	$	1.0
Transportation services revenue – related parties	28.8		29.7
Total revenue	$	29.6	$	30.7

Summary of Remaining Performance Obligation, Expected Timing of Satisfaction

The values in the table below represent the fixed portion of the MVC arrangements with our existing customer contracts, summarized as future performance obligations as of March 31, 2021. The unfulfilled performance obligations included in the table below are expected to be recognized in revenue in the specified periods:

	As of March 31, 2021
Remainder of 2021	$	80.2
2022	102.0
2023	98.3
Total	$	280.5

Summary of Contract with Customer, Assets and Liabilities

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

	March 31, 2021		December 31, 2020
Receivables from contracts with customers – third parties	$	0.3	$	0.2
Receivables from contracts with customers – related parties	10.1		11.0
Deferred revenue and credits – related parties	0.9		1.8