Partners' Capital, Mezzanine Capital and Distributions (Narrative) (Details) - USD ($)				1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 03, 2023	Apr. 14, 2020	Sep. 23, 2019	Dec. 31, 2021	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Sep. 29, 2022	Sep. 01, 2022	May 16, 2022
Partners Capital And Distributions [Line Items]
Common units outstanding (in units)					122,579,218		122,579,218		122,579,218
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units					$ (22,910,000)	$ (18,684,000)	$ (46,912,000)	$ (37,368,000)
Redeemable noncontrolling interests, no units issued and outstanding at June 30, 2023 and 0 preferred units issued and outstanding March 31, 2023												$ 270,100,000
Net income attributable to redeemable noncontrolling interests					$ 0	22,620,000	$ 0	30,443,000
Cameron Highway Oil Pipeline | Affiliated Entity
Partners Capital And Distributions [Line Items]
Percentage of ownership after transaction				64.00%
Independence Hub, LLC | Affiliated Entity | Genesis Energy, LLC
Partners Capital And Distributions [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent					80.00%		80.00%
Subsidiary | Alkali Holdings
Partners Capital And Distributions [Line Items]
Redeemable Noncontrolling Interest, Equity, Preferred, Units Issued, Value			$ 55,000,000			3,400,000		10,000,000
Redeemable noncontrolling interest preferred commitment			$ 350,000,000
Expansion project extension period		1 year
Equity preferred units issued (in units)		1,750
Commitment period		4 years
Redeemable Noncontrolling Interest, Equity, Preferred, Purchase Price Per Unit			$ 1,000
Redemption value of redeemable preferred noncontrolling interest												$ 288,600,000
Net income attributable to redeemable noncontrolling interests					$ 0	22,620,000	$ 0	30,443,000
Redemption accretion value adjustments						700,000		1,900,000
Period for occurrence of triggering events			6 years 6 months
Subsidiary | Alkali Holdings | Maximum
Partners Capital And Distributions [Line Items]
Number of preferred units outstanding (in units)		351,750
Redeemable noncontrolling interest preferred commitment		$ 351,800,000
Subsidiary | Alkali Holdings | Minimum
Partners Capital And Distributions [Line Items]
Redeemable noncontrolling interest preferred commitment			$ 251,800,000
Class A Convertible Preferred Stock Units
Partners Capital And Distributions [Line Items]
Class A Convertible Preferred Units redeemed (in shares)	741,620
Class A Convertible Preferred units redeemed (in dollars per share)	$ 33.71
Class A Convertible Preferred Units, carrying value (dollars per share)	$ 35.2
Class A Convertible Preferred Units redeemed, value (dollars)	$ 1,100,000
Temporary Equity, Dividend Rate, Per-Dollar-Amount	$ 0.9681
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units					(24,000,000)	$ (18,700,000)	(48,000,000)	$ (37,400,000)
Temporary equity, adjustment	$ 1,100,000
Stock reset rate percentage									8.75%	11.24%	10.75%
Redeemable Noncontrolling Interest Preferred Units
Partners Capital And Distributions [Line Items]
Base Preferred Return Amount, Alkali Holdings					$ 18,500,000		$ 18,500,000
Redeemable Noncontrolling Interest Preferred Units | Subsidiary | Alkali Holdings
Partners Capital And Distributions [Line Items]
Number of preferred units outstanding (in units)			55,000		0		0					251,750
Limited Partner [Member] | Class A Common Units
Partners Capital And Distributions [Line Items]
Common units outstanding (in units)					122,539,221		122,539,221
Limited Partner [Member] | Class B Common Units
Partners Capital And Distributions [Line Items]
Common units outstanding (in units)					39,997		39,997
Limited Partner [Member] | Preferred Class A
Partners Capital And Distributions [Line Items]
Common units outstanding (in units)					24,595,158		24,595,158