Exploratory Costs (Tables)

9 Months Ended

Sep. 30, 2020

Extractive Industries [Abstract]

Schedule of Capitalized Exploratory Well and Project Activity

The changes in capitalized exploratory well costs are as follows:

	Nine Months Ended September 30, 2020
	(in millions)
Beginning capitalized exploratory well costs	$	660
Additions to exploratory well costs pending the determination of proved reserves	975
Reclassification due to determination of proved reserves	(1,131)
Ending capitalized exploratory well costs	$	504

Aging of Capitalized Exploratory Costs

Aging of capitalized exploratory costs and the number of projects for which exploratory well costs have been capitalized for a period greater than one year, based on the date drilling was completed, are as follows:

	As of September 30, 2020		As of December 31, 2019
	(in millions, except well counts)
Capitalized exploratory well costs that have been suspended:
One year or less	$	501	$	660
More than one year	3		—
	$	504	$	660
Number of wells or projects with exploratory well costs that have been suspended for a period greater than one year (a)	1		—

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(a)The one exploratory well that has been suspended for a period greater than one year is scheduled to be completed during the first half of 2021.