CAPITALIZED EXPLORATORY WELL COSTS - Aging of Suspended Well Balances (Details) $ in Millions	Dec. 31, 2021 USD ($) Project	Dec. 31, 2020 USD ($) Project	Dec. 31, 2019 USD ($) Project	Dec. 31, 2018 USD ($)
Extractive Industries [Abstract]
Exploratory well costs capitalized for a period of one year or less	$ 13	$ 184	$ 108
Exploratory well costs capitalized for a period greater than one year	33	13	33
Capitalized exploratory well costs	$ 46	$ 197	$ 141	$ 159
Number of projects with exploratory well costs capitalized for a period greater than one year | Project	9,000,000	5	2