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Assets Under Development - Commitments (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Extractive Industries [Abstract]
2021	$ 114,492
2022	265,831
2023	277,336
2024	58,792
Total	$ 716,451

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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