Partners' Equity, Income Allocations and Cash Distributions - Issuances (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Partners' Capital [Abstract]
Limited Partners' Capital Account, Distribution Amount	$ 34.5	$ 68.5	$ 68.9	$ 136.7
Common units held by HFC (in shares)	59,630,030		59,630,030
Ownership percentage, controlling interest	57.00%		57.00%
Common Unit Issuance Program			$ 200.0
Partners' capital account, units, sale of units (in shares)			2,413,153
Gross proceeds from issuance of common units			$ 82.3

Common Unit Issuance Program

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- Definition

Ownership Percentage by Parent, Controlling Interest

+ References

No definition available.

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- Definition

The total amount of distributions to limited partners.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
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- References

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- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 210
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- Definition

Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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