Partners' Capital and Distributions - Units Outstanding (Details) - shares	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Series A Preferred Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	71,090,468	71,090,468
Outstanding, end of period (units)	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
Outstanding, end of period (units)	800,000	800,000
Common Units
Activity for preferred units and common units
Outstanding, beginning of period (units)	704,991,540	722,380,416
Repurchase and cancellation of common units under the Common Equity Repurchase Program (units)	(2,375,299)	(350,000)
Issuances of common units under equity-indexed compensation plans (units)	51,937	25,431
Outstanding, end of period (units)	702,668,178	722,055,847

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

No definition available.

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- Definition

The number of limited partner units outstanding.

+ References

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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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- Definition

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

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