Leases (Schedule of Right-of-use Assets and Lease Liabilities) (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Right-of-use assets, finance lease		$ 244	$ 246
Finance lease liabilities:
Current lease liabilities, finance lease	[1]	22	21
Long-term lease liabilities, finance lease		285	286
Total lease liabilities, finance lease	[2]	307	307
Right-of-use assets, operating lease		32	21
Operating lease liabilities:
Current lease liabilities, operating lease	[1]	16	12
Long-term lease liabilities, operating lease		16	9
Total lease liabilities, operating lease	[2]	32	21
Right-of-use assets		276	267
Lease liabilities:
Current lease liabilities	[1]	38	33
Long-term lease liabilities		301	295
Total lease liabilities	[2]	$ 339	$ 328

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

[2] Devon has entered into certain leases of equipment related to the exploration, development and production of oil and gas that had terms not yet commenced as of March 31, 2024 and are therefore excluded from the amounts shown above.