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Partners' Capital and Distributions - Noncontrolling Interests in Subsidiaries (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Partners' Capital and Distributions |  |  |  |
Contribution from noncontrolling interests | $ 2 |  | $ 10 |
Distributions | 184 | $ 311 | 496 | $ 579
Noncontrolling Interests |  |  |  |
Partners' Capital and Distributions |  |  |  |
Contribution from noncontrolling interests | 2 |  | 10 |
Distributions | $ 151 | $ 254 | $ 397 | $ 474
AAP |  |  |  |
Partners' Capital and Distributions |  |  |  |
Noncontrolling interests in subsidiaries (percent) | 25.00% |  | 25.00% |
Red River LLC |  |  |  |
Partners' Capital and Distributions |  |  |  |
Noncontrolling interests in subsidiaries (percent) | 33.00% |  | 33.00% |
Common Units and Series A Preferred Units | PAA |  |  |  |
Partners' Capital and Distributions |  |  |  |
Noncontrolling interests in subsidiaries (percent) | 69.00% |  | 69.00% |
Series B Preferred Units | PAA |  |  |  |
Partners' Capital and Distributions |  |  |  |
Noncontrolling interests in subsidiaries (percent) | 100.00% |  | 100.00% |
Red River LLC | Noncontrolling Interests |  |  |  |
Partners' Capital and Distributions |  |  |  |
Contribution from noncontrolling interests |  |  | $ 10 |
Distributions |  |  | $ 4 |

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