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Partners' Capital and Distributions - Units Outstanding (Details) - shares	3 Months Ended			6 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023
Series A Preferred Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	71,090,468	71,090,468	71,090,468	71,090,468
Outstanding, end of period (units)	71,090,468	71,090,468	71,090,468	71,090,468
Series B Preferred Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	800,000	800,000	800,000	800,000
Outstanding, end of period (units)	800,000	800,000	800,000	800,000
Common Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	698,354,498	702,668,178	704,991,540	698,354,498
Repurchase and cancellation of common units under the Common Equity Repurchase Program (units)		(4,876,062)	(2,375,299)
Issuances of common units under equity-indexed compensation plans (units)	35,508	147,830	51,937	35,508
Outstanding, end of period (units)	698,390,006	697,939,946	702,668,178	698,390,006

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

The number of limited partner units outstanding.

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- Definition

Number of units issued for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.

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Number of shares that have been repurchased and retired during the period.

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