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Non-Mineral Leases - Total Lease Liabilities (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Operating Lease Liabilities Gross Difference Amount [Abstract] |  |
Operating Lease, Liability | $ 932 |
Interest on operating lease liabilities | (87) |
Lessee, Operating Lease, Liability, Payments, Due, Total | 1,019 | [1]
Finance Lease Liabilities, Gross Difference, Amount [Abstract] |  |
Finance Lease, Liability Total | 720 |
Interest on Finance lease liabilities | (160) |
Finance Lease Liability, Payments, Due, Total | $ 880 | [1]
[1] | *Future lease payments for operating and finance leases commencing on or after January 1, 2019, also include payments related to non -lease components in accordance with our election to adopt the optional practical expedient not to separate lease components apart from non-lease components for accounting purposes. In addition, future payments related to operating and finance leases proportionately consolidated by the company have been included in the table on a proportionate basis consistent with our respective ownership interest in the underlying investee company or oil and gas venture.

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