Related Party Transactions - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) yr shares	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Sales-type Lease, Revenue	$ 2.4
Concentration Risk, Percentage	79.00%
Document Period End Date	Mar. 31, 2020
Shares, Issued | shares	37,250,000
Administrative fee, related party	$ 2.6
Revenue from related parties	101.4		$ 103.4
Omnibus Agreement G & A expenses, related party	0.7		0.6
Employee expenses reimbursed to related party	14.1		13.6
Reimbursements received from related parties	3.1		2.1
Accounts receivable due from HFC	38.4	$ 49.7
Due to Affiliate	6.4	16.7
Lease Income	0.5
Limited Partners' Capital Account, Distribution Amount	2.5
Affiliated Entity
Related Party Transaction [Line Items]
Minimum annualized payments	348.2
Distributions to HEP unitholders	37.6		$ 37.3
Shortfall Payments
Related Party Transaction [Line Items]
Shortfall billings deferred revenue	$ 0.2	$ 0.5
Minimum
Related Party Transaction [Line Items]
Revenue service commitments expiration | yr	2,021
Maximum
Related Party Transaction [Line Items]
Revenue service commitments expiration | yr	2,036