CAPITALIZED EXPLORATORY WELL COSTS (Tables)

12 Months Ended

Dec. 31, 2019

Extractive Industries [Abstract]

Capitalized Exploratory Well Costs, Roll Forward

The following summarizes the changes in capitalized exploratory well costs for each of the last three years ended December 31, 2019, 2018, and 2017. Additions pending the determination of proved reserves excludes amounts capitalized and subsequently charged to expense within the same year.

	2019			2018			2017
	(In millions)
Balance at January 1	$	159		$	350		$	264
Additions pending determination of proved reserves	286			602			477
Divestitures and other	(100		)	(82		)	(3		)
Reclassifications to proved properties	(179		)	(647		)	(373		)
Charged to exploration expense	(25		)	(64		)	(15		)
Balance at December 31	$	141		$	159		$	350

Schedule of Aging of Capitalized Exploratory Well Costs

The following provides an aging of capitalized exploratory well costs and the number of projects for which exploratory well costs have been capitalized for a period greater than one year since the completion of drilling at year-end 2019, 2018, and 2017:

	2019		2018		2017
	(In millions)
Exploratory well costs capitalized for a period of one year or less	$	108	$	126	$	160
Exploratory well costs capitalized for a period greater than one year	33		33		190
Balance at December 31	$	141	$	159	$	350
Number of projects with exploratory well costs capitalized for a period greater than one year	2		2		4

Schedule of Projects with Exploratory Well Costs Capitalized for More than One Year

The following table summarizes aging by geographic area of those exploratory well costs that, as of December 31, 2019, have been capitalized for a period greater than one year, categorized by the year in which drilling was completed:

							2016 and
	Total		2018		2017		Prior
	(In millions)
United States	$	24	$	24	$	—	$	—
Egypt	9		9		—		—
	$	33	$	33	$	—	$	—