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Partners' Capital and Distributions - Activity for Series A and B Preferred Units and Common Units (Details) - shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Series A Preferred Units |  |  |
Activity for preferred units and common units |  |  |
Outstanding, beginning of period (in units) | 71,090,468 | 71,090,468 | 71,090,468
Outstanding, end of period (in units) | 71,090,468 | 71,090,468 | 71,090,468
Series B Preferred Units |  |  |
Activity for preferred units and common units |  |  |
Outstanding, beginning of period (in units) | 800,000 | 800,000 | 800,000
Outstanding, end of period (in units) | 800,000 | 800,000 | 800,000
Common Units |  |  |
Activity for preferred units and common units |  |  |
Outstanding, beginning of period (in units) | 704,991,540 | 722,380,416 | 728,028,576
Repurchase and cancellation of common units under the Common Equity Repurchase Program (in units) | (7,251,361) | (18,061,583) | (6,222,748)
Issuance of common units under equity-indexed compensation plans (in units) | 614,319 | 672,707 | 574,588
Outstanding, end of period (in units) | 698,354,498 | 704,991,540 | 722,380,416

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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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