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Partners' Capital and Distributions (Tables) | 12 Months Ended
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Dec. 31, 2020
Partners Capital and Distribution [Line Items] |
Schedule of changes in shares outstanding | The following table presents the activity for our Class A shares, Class B shares and Class C shares:
| Class A Shares |  | Class B Shares |  | Class C Shares
Outstanding at December 31, 2017 | 156,111,139 |  |  | 126,984,572 |  |  | 510,925,432 |
Exchange Right exercises | 3,363,199 |  |  | (3,363,199) |  |  | — |
Redemption Right exercises | — |  |  | (4,017,035) |  |  | 4,017,035 |
Issuance of Series A preferred units by a subsidiary | — |  |  | — |  |  | 1,393,926 |
Other | 11,250 |  |  | — |  |  | 601,887 |
Outstanding at December 31, 2018 | 159,485,588 |  |  | 119,604,338 |  |  | 516,938,280 |
Exchange Right exercises (1) | 22,637,818 |  |  | (22,637,818) |  |  | — |
Redemption Right exercises (1) | — |  |  | (31,180,818) |  |  | 31,180,818 |
Other | 15,186 |  |  | — |  |  | 1,419,041 |
Outstanding at December 31, 2019 | 182,138,592 |  |  | 65,785,702 |  |  | 549,538,139 |
Conversion of AAP Management Units | — |  |  | 595,117 |  |  | — |
Exchange Right exercises | 11,858,457 |  |  | (11,858,457) |  |  |
Redemption Right exercises |  |  | (3,882,170) |  |  | 3,882,170 |
Repurchase of common units by a subsidiary | — |  |  | — |  |  | (6,222,748) |
Other | 54,387 |  |  |  |  | 520,201 |
Outstanding at December 31, 2020 | 194,051,436 |  |  | 50,640,192 |  |  | 547,717,762 |
(1)Includes exercises by Oxy and an affiliate of The Energy & Minerals Group (“EMG”). See Note 17 for additional information.
Class A Shares |
Partners Capital and Distribution [Line Items] |
Schedule of distributions | The following table details the distributions paid to our Class A shareholders during the periods indicated (in millions, except per share data):
Year |  | Distributions to Class A Shareholders |  | Distributions per Class A Share
2020 |  | $ | 166 |  |  | $ | 0.90 |
2019 |  | $ | 231 |  |  | $ | 1.38 |
2018 |  | $ | 189 |  |  | $ | 1.20 |
PAA | Series A Preferred Units |
Partners Capital and Distribution [Line Items] |
Schedule of distributions | PAA Preferred Unit Distributions. The following table details distributions paid to PAA’s preferred unitholders during the year presented (in millions, except unit data):
|  | Series A Preferred Unitholders |  |  | Series B Preferred Unitholders
|  | Distribution (1) |  |  | Cash Distribution
Year |  | Cash |  | Units |  |
2020 |  | $ | 149 |  |  | — |  |  |  | $ | 49 |
2019 |  | $ | 149 |  |  | — |  |  |  | $ | 49 |
2018 |  | $ | 112 |  |  | 1,393,926 |  |  |  | $ | 49 |
(1)PAA elected to pay distributions on its Series A preferred units in additional Series A preferred units for each quarterly distribution from their issuance through the February 2018 distribution. Distributions on PAA’s Series A preferred units have been paid in cash since the May 2018 distribution. During 2018, PAA issued additional Series A preferred units in lieu of cash distributions of $37 million.
PAA | Series B Preferred Units |
Partners Capital and Distribution [Line Items] |
Schedule of distributions | PAA Preferred Unit Distributions. The following table details distributions paid to PAA’s preferred unitholders during the year presented (in millions, except unit data):
|  | Series A Preferred Unitholders |  |  | Series B Preferred Unitholders
|  | Distribution (1) |  |  | Cash Distribution
Year |  | Cash |  | Units |  |
2020 |  | $ | 149 |  |  | — |  |  |  | $ | 49 |
2019 |  | $ | 149 |  |  | — |  |  |  | $ | 49 |
2018 |  | $ | 112 |  |  | 1,393,926 |  |  |  | $ | 49 |
(1)PAA elected to pay distributions on its Series A preferred units in additional Series A preferred units for each quarterly distribution from their issuance through the February 2018 distribution. Distributions on PAA’s Series A preferred units have been paid in cash since the May 2018 distribution. During 2018, PAA issued additional Series A preferred units in lieu of cash distributions of $37 million.
PAA | Common Units |
Partners Capital and Distribution [Line Items] |
Schedule of distributions | The following table details distributions paid by PAA during the year presented (in millions, except per unit data):
|  | Distributions Paid |  |  | Distributions per common unit
Year |  | Public |  | AAP |  | Total |  |
2020 |  | $ | 432 |  |  | $ | 223 |  |  | $ | 655 |  |  |  | $ | 0.90 |
2019 |  | $ | 632 |  |  | $ | 372 |  |  | $ | 1,004 |  |  |  | $ | 1.38 |
2018 |  | $ | 532 |  |  | $ | 339 |  |  | $ | 871 |  |  |  | $ | 1.20 |
AAP |
Partners Capital and Distribution [Line Items] |
Schedule of distributions | The following table details the distributions to AAP’s partners paid during the periods indicated from distributions received from PAA (in millions):
|  | Distributions to AAP’s Partners
Year |  | Noncontrolling Interests |  | PAGP |  | Total Cash Distributions
2020 |  | $ | 57 |  |  | $ | 166 |  |  | $ | 223 |
2019 |  | $ | 141 |  |  | $ | 231 |  |  | $ | 372 |
2018 |  | $ | 150 |  |  | $ | 189 |  |  | $ | 339 |

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