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Leases (Maturities of Lease Liabilities) (Details) $ in Millions | Jun. 30, 2019 USD ($)
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Leases [Abstract] |  |
2019 | $ 3 |
2020 | 7 |
2021 | 7 |
2022 | 8 |
2023 | 8 |
Thereafter | 306 |
Total lease payments | 339 |
Less: interest | (93) |
Present value of lease liabilities | 246 |
2019 | 22 |
2020 | 32 |
2021 | 8 |
2022 | 1 |
2023 | 1 |
Thereafter | 1 |
Total lease payments | 65 |
Less: interest | (2) |
Present value of lease liabilities | 63 |
2019 | 25 | [1]
2020 | 39 | [1]
2021 | 15 | [1]
2022 | 9 | [1]
2023 | 9 | [1]
Thereafter | 307 | [1]
Total lease payments | 404 | [1]
Less: interest | (95) | [1]
Present value of lease liabilities | $ 309 | [1]
[1] | Under previous lease accounting standard, ASC 840, Devon’s lease obligations as of December 31, 2018 expiring in each of the next 5 years and thereafter were $61 million for 2019, $48 million for 2020, $18 million for 2021, $9 million for 2022, $8 million for 2023 and $33 million thereafter

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