Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

Property, plant and equipment at December 31 were as follows:

	2022		2021
	(In millions)
Exploration and Production
Unproved properties	$	149	$	184
Proved properties	2,660		2,877
Wells, equipment and related facilities	25,182		23,745
	27,991		26,806
Midstream	4,571		4,342
Corporate and Other	30		30
Total — at cost	32,592		31,178
Less: Reserves for depreciation, depletion, amortization and lease impairment	17,494		16,996
Property, Plant and Equipment — Net	$	15,098	$	14,182

Net Changes in Capitalized Exploratory Well Costs

Capitalized Exploratory Well Costs:  The following table discloses the amount of capitalized exploratory well costs pending determination of proved reserves at December 31 and the changes therein during the respective years:

	2022		2021		2020
	(In millions)
Balance at January 1	$	681	$	459	$	584
Additions to capitalized exploratory well costs pending the determination of proved reserves	298		222		111
Reclassifications to wells, facilities and equipment based on the determination of proved reserves	(93)		—		(111)
Capitalized exploratory well costs charged to expense	—		—		(125)
Balance at December 31	$	886	$	681	$	459
Number of Wells at December 31	43		35		22

Exploratory Drilling Costs Capitalized

Exploratory well costs capitalized for greater than one year following completion of drilling were $585 million at December 31, 2022, separated by year of completion as follows (in millions):

2021	$	222
2020	54
2019	140
2018	105
2017 and prior	64
	$	585