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Partners' Capital and Distributions (Tables) | 9 Months Ended
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Sep. 30, 2019
Limited Partners' Capital Account [Line Items] |
Schedule of activity for preferred units and common units | The following tables present the activity for our preferred and common units:
| Limited Partners
| Series A Preferred Units |  | Series B Preferred Units |  | Common Units
Outstanding at December 31, 2018 | 71,090,468 |  |  | 800,000 |  |  | 726,361,924 |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 423,889 |
Outstanding at March 31, 2019 | 71,090,468 |  |  | 800,000 |  |  | 726,785,813 |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 638,806 |
Outstanding at June 30, 2019 | 71,090,468 |  |  | 800,000 |  |  | 727,424,619 |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 603,957 |
Outstanding at September 30, 2019 | 71,090,468 |  |  | 800,000 |  |  | 728,028,576 |
| Limited Partners
| Series A Preferred Units |  | Series B Preferred Units |  | Common Units
Outstanding at December 31, 2017 | 69,696,542 |  |  | 800,000 |  |  | 725,189,138 |
Issuance of Series A preferred units in connection with in-kind distribution | 1,393,926 |  |  | — |  |  | — |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 17,766 |
Outstanding at March 31, 2018 | 71,090,468 |  |  | 800,000 |  |  | 725,206,904 |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 375,835 |
Outstanding at June 30, 2018 | 71,090,468 |  |  | 800,000 |  |  | 725,582,739 |
Issuances of common units under equity-indexed compensation plans | — |  |  | — |  |  | 505,650 |
Outstanding at September 30, 2018 | 71,090,468 |  |  | 800,000 |  |  | 726,088,389 |
Series A Preferred Units |
Limited Partners' Capital Account [Line Items] |
Schedule of distributions | The following table details distributions to our Series A preferred unitholders paid during or pertaining to the first nine months of 2019 (in millions, except per unit data):
|  | Series A Preferred Unitholders
Distribution Payment Date |  | Cash Distribution |  |  | Distribution per Unit
November 14, 2019 (1) |  | $ | 37 |  |  |  | $ | 0.525 |
August 14, 2019 |  | $ | 37 |  |  |  | $ | 0.525 |
May 15, 2019 |  | $ | 37 |  |  |  | $ | 0.525 |
February 14, 2019 |  | $ | 37 |  |  |  | $ | 0.525 |
(1) | Payable to unitholders of record at the close of business on October 31, 2019 for the period from July 1, 2019 through September 30, 2019. At September 30, 2019, such amount was accrued to distributions payable in “Other current liabilities” on our Condensed Consolidated Balance Sheet.
Series B Preferred Units |
Limited Partners' Capital Account [Line Items] |
Schedule of distributions | The following table details distributions paid or to be paid to our Series B preferred unitholders during the first nine months of 2019 (in millions, except per unit data):
|  | Series B Preferred Unitholders
Distribution Payment Date |  | Cash Distribution |  |  | Distribution per Unit
November 15, 2019 (1) |  | $ | 24.5 |  |  |  | $ | 30.625 |
May 15, 2019 |  | $ | 24.5 |  |  |  | $ | 30.625 |
(1) Payable to unitholders of record at the close of business on November 1, 2019 for the period from May 15, 2019 through November 14, 2019.
Common Units |
Limited Partners' Capital Account [Line Items] |
Schedule of distributions | The following table details distributions to our common unitholders paid during or pertaining to the first nine months of 2019 (in millions, except per unit data):
|  | Distributions |  |  | Cash Distribution per Common Unit
|  | Common Unitholders |  | Total Cash Distribution |  |
Distribution Payment Date |  | Public |  | AAP |  |  |
November 14, 2019 (1) |  | $ | 171 |  |  | $ | 91 |  |  | $ | 262 |  |  |  | $ | 0.36 |
August 14, 2019 |  | $ | 166 |  |  | $ | 96 |  |  | $ | 262 |  |  |  | $ | 0.36 |
May 15, 2019 |  | $ | 161 |  |  | $ | 101 |  |  | $ | 262 |  |  |  | $ | 0.36 |
February 14, 2019 |  | $ | 134 |  |  | $ | 84 |  |  | $ | 218 |  |  |  | $ | 0.30 |
(1) Payable to unitholders of record at the close of business on October 31, 2019 for the period from July 1, 2019 through September 30, 2019.

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