Lease Accounting (Narrative) (Details) - Genesis NEJD Pipeline, LLC	3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Oct. 30, 2020 installment
Lessor, Lease, Description [Line Items]
Direct financing lease, number of installments | installment			4
Collections received from direct finance lease receivable	$ 17,500,000	$ 2,200,000
Direct finance lease receivable	$ 52,500,000