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Net Income Per Class A Share (Tables) | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Calculation of basic and diluted net income/(loss) per Class A share | The following table sets forth the computation of basic and diluted net income/(loss) per Class A share (in millions, except per share data):
|  |  |  |  | Three Months Ended March 31, |  |
|  |  |  |  | 2020 |  | 2019
Basic and Diluted Net Income/(Loss) per Class A Share |  |  |  |  |  |  |
Net income/(loss) attributable to PAGP |  |  |  |  | $ | (581) |  |  | $ | 147 |
Basic and diluted weighted average Class A shares outstanding |  |  |  |  | 183 |  |  | 159 |
Basic and diluted net income/(loss) per Class A share |  |  |  |  | $ | (3.18) |  |  | $ | 0.92 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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