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Partners' Capital, Mezzanine Capital and Distributions (Narrative) (Details)					1 Months Ended	3 Months Ended
	Nov. 17, 2021 USD ($)	Nov. 16, 2021	Apr. 14, 2020 USD ($) shares	Sep. 23, 2019 USD ($) $ / shares shares	Dec. 31, 2021 shares	Mar. 31, 2022 USD ($) shares	Mar. 31, 2021 USD ($)
Temporary Equity [Line Items]
Common units outstanding (in units) | shares					122,579,218	122,579,218
Preferred units, accumulated distributions						$ 18,684,000	$ 18,684,000
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						7,823,000	4,791,000
Redemption accretion						$ 1,227,000
Cameron Highway Oil Pipeline | Affiliated Entity
Temporary Equity [Line Items]
Sale of Stock, Consideration Received on Transaction	$ 418,000,000
Sale of Stock, Percentage of Ownership after Transaction					64.00%
Sale Of Stock, Percentage Of Ownership Sold		0.36				0.36
Independence Hub, LLC | Affiliated Entity | Genesis Energy, LLC
Temporary Equity [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent						80.00%
Subsidiary | Alkali Holdings
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Preferred, Purchase Price Per Unit | $ / shares				$ 1,000
Redeemable Noncontrolling Interest, Equity, Preferred, Units Issued, Value				$ 55,000,000
Redeemable noncontrolling interest preferred commitment				$ 350,000,000
Expansion project extension period			1 year
Equity preferred units issued (in units) | shares			1,750
Commitment period			4 years
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						$ 7,800,000	4,800,000
PIK distribution						6,600,000	4,100,000
Redemption accretion						1,200,000	700,000
Redemption value of redeemable preferred noncontrolling interest						$ 289,800,000
Period for occurrence of triggering events				6 years 6 months
Subsidiary | Alkali Holdings | Maximum
Temporary Equity [Line Items]
Number of preferred units outstanding (in units) | shares			351,750
Redeemable noncontrolling interest preferred commitment			$ 351,800,000
Subsidiary | Alkali Holdings | Minimum
Temporary Equity [Line Items]
Redeemable noncontrolling interest preferred commitment				$ 251,800,000
Common Class A | Limited Partner [Member]
Temporary Equity [Line Items]
Common units outstanding (in units) | shares						122,539,221
Common Class B | Limited Partner [Member]
Temporary Equity [Line Items]
Common units outstanding (in units) | shares						39,997
Class A Convertible Preferred Stock Units
Temporary Equity [Line Items]
Number of preferred units outstanding (in units) | shares					25,336,778	25,336,778
Preferred units, accumulated distributions						$ 18,700,000	$ 18,700,000
Redeemable Noncontrolling Interest Preferred Units
Temporary Equity [Line Items]
Number of preferred units outstanding (in units) | shares					246,394	250,114
Redeemable Noncontrolling Interest Preferred Units | Subsidiary | Alkali Holdings
Temporary Equity [Line Items]
Number of preferred units outstanding (in units) | shares				55,000		250,114

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