Capitalized Exploratory Well Costs

12 Months Ended

Dec. 31, 2021

Extractive Industries [Abstract]

Capitalized Exploratory Well Costs

16. Capitalized Exploratory Well Costs

A summary of the changes in our capitalized exploratory well costs for the periods presented is detailed below. Additions pending the determination of proved reserves excludes amounts capitalized and subsequently charged to expense within the same year.

	Successor		Predecessor
	Period from February 10, 2021 through December 31, 2021		Period from January 1, 2021 through February 9, 2021		Year Ended December 31, 2020		Year Ended December 31, 2019
Balance, beginning of period	$	—	$	—	$	7	$	36
Additions pending the determination of proved reserves	24		—		—		7
Divestitures and other	—		—		—		(3)
Reclassifications to proved properties	(10)		—		—		(17)
Charges to exploration expense	—		—		(7)		(16)
Balance, end of period	$	14	$	—	$	—	$	7

We had no projects with suspended exploratory well costs capitalized for a period greater than one year as of December 31, 2021, 2020 and 2019, respectively.