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EQM Midstream Partners, LP (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 9 Months Ended
--- | --- | --- | ---
Oct. 25, 2018 | Oct. 23, 2018 | Sep. 30, 2018
EQT Corporation | EQM |  |  |
Subsidiary or equity method investee |  |  |
Limited partner interest |  |  | 6.70%
EQM |  |  |
Subsidiary or equity method investee |  |  |
Cash distribution declared |  |  | $ 17.2
EQM | Subsequent Event |  |  |
Subsidiary or equity method investee |  |  |
Distribution made to limited partner and general partner, cash distributions declared | $ 97.8 |  |
Cash distribution declared | 24.3 |  |
Distribution made to general partner, cash distributions declared | 2.5 |  |
Cash distribution declared related to IDRs | $ 71.0 |  |
General Partner | EQM |  |  |
Subsidiary or equity method investee |  |  |
Common unit, outstanding (in shares) |  |  | 5,889,282
General Partner | EQM | Subsequent Event |  |  |
Subsidiary or equity method investee |  |  |
Cash distribution declared (in dollars per share) |  | $ 1.115 |

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