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v3.20.4

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Total revenues | $ 5,963 | $ 5,833 | $ 3,225 | $ 8,269 | $ 9,154 | $ 7,886 | $ 8,253 | $ 8,375 | $ 23,290 | $ 33,669 | $ 34,055
Gross margin | 4 | 313 | 282 | (190) | 402 | 565 | 525 | 790 | 408 | 2,282 |
Operating income/(loss) | (67) | 251 | 208 | (2,775) | 329 | 490 | 449 | 713 | (2,383) | 1,980 | 2,272
Net income/(loss) | (23) | 139 | 137 | (2,692) | 291 | 431 | 426 | 914 | (2,440) | 2,062 | 2,107
Net income attributable to PAGP | (20) | 17 | 16 | (581) | $ 48 | $ 70 | $ 66 | $ 147 | (568) | 331 | 334
Goodwill impairment losses |  |  |  | 2,515 |  |  |  |  | 2,515 | 0 | $ 0
Non-cash impairment losses upon classification to assets held for sale |  |  |  | 167 |  |  |  |  |  |  |
Gain on/(impairment of) investments in unconsolidated entities, net |  |  |  |  |  |  |  |  |  |  |
Write down of investments |  | 91 | $ 69 | 43 |  |  |  |  |  |  |
Gain on/(impairment of) investments in unconsolidated entities, net | Capline Pipeline Company LLC |  |  |  |  |  |  |  |  |  |  |
Gain from remeasurement to fair value of retained investment |  | $ 2 |  | 267 |  |  |  |  |  | $ 269 |
(Gains)/losses on asset sales and asset impairments, net |  |  |  |  |  |  |  |  |  |  |
Non-cash impairment losses, long-lived assets | $ 95 |  |  | $ 446 |  |  |  |  | $ 541 |  |
Class A Shares |  |  |  |  |  |  |  |  |  |  |
Basic net income/(loss) per Class A share (in dollars per share) | $ (0.11) | $ 0.09 | $ 0.09 | $ (3.18) | $ 0.26 | $ 0.41 | $ 0.41 | $ 0.92 | $ (3.06) | $ 1.97 | $ 2.12
Diluted net income/(loss) per Class A share (in dollars per share) | (0.11) | 0.09 | 0.09 | (3.18) | 0.26 | 0.41 | 0.40 | 0.92 | (3.07) | 1.96 | $ 2.11
Cash distributions per Class A share (in dollars per share) | $ 0.18 | $ 0.18 | $ 0.18 | $ 0.36 | $ 0.36 | $ 0.36 | $ 0.36 | $ 0.30 | $ 0.90 | $ 1.38 |

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