Leases (Schedule of Right-of-use Assets and Lease Liabilities) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Leases [Abstract]
Right-of-use assets, finance lease	$ 229
Finance lease liabilities:
Current lease liabilities, finance lease	7	[1]
Long-term lease liabilities, finance lease	240
Total lease liabilities, finance lease	247
Right-of-use assets, operating lease	14
Operating lease liabilities:
Current lease liabilities, operating lease	10	[1]
Long-term lease liabilities, operating lease	4
Total lease liabilities, operating lease	14
Right-of-use assets	243
Lease liabilities:
Current lease liabilities	17	[1]
Long-term lease liabilities	244
Total lease liabilities	$ 261	[2]

[1] Current lease liabilities are included in other current liabilities on the consolidated balance sheets.

[2] 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.