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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Series A Preferred Units |  |  |  |  |  |
Units outstanding (units) | 71,090,468 | 71,090,468 | 71,090,468 | 71,090,468 | 71,090,468 | 71,090,468
Series B Preferred Units |  |  |  |  |  |
Units outstanding (units) | 800,000 | 800,000 | 800,000 | 800,000 | 800,000 | 800,000
Common Units |  |  |  |  |  |
Units outstanding (units) | 698,390,006 | 698,390,006 | 698,354,498 | 697,939,946 | 702,668,178 | 704,991,540

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- Definition The number of limited partner units outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-5 + Details
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