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Acquisitions (Preliminary Purchase Price Allocation) (Details) - LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. - USD ($) $ in Thousands | 1 Months Ended | 7 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Dec. 31, 2019 | Mar. 31, 2020
Business Acquisition [Line Items] |  |  |
Cash consideration paid | $ 1,236,200 | $ 1,236,165 |
Contingent consideration |  | 89,444 |
Total purchase consideration |  | $ 1,325,609 |
Fair value of Property, plant and equipment |  |  | $ 1,356,185
Other assets |  |  | 6,697
Less: Asset retirement obligations |  |  | (37,273)
Total net assets |  |  | $ 1,325,609

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