Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

13.Property, Plant and Equipment

Capitalized Costs

The following table reflects the aggregate capitalized costs related to Devon’s oil and gas and non-oil and gas activities.

	December 31, 2020			December 31, 2019
Property and equipment:
Proved	$	27,589		$	27,668
Unproved and properties under development		392			583
Total oil and gas		27,981			28,251
Less accumulated DD&A		(23,545	)		(20,693	)
Oil and gas property and equipment, net		4,436			7,558
Other property and equipment		1,737			1,725
Less accumulated DD&A		(780	)		(690	)
Other property and equipment, net ⁽¹⁾		957			1,035
Property and equipment, net	$	5,393		$	8,593

(1)	$102 million and $80 million related to CDM in 2020 and 2019, respectively.

During 2020, Devon recognized asset impairments of $2.7 billion primarily related to proved oil and gas assets and $152 million of unproved impairments, which significantly reduced the carrying value of its property and equipment, net. See Note 5 for additional details.

Suspended Exploratory Well Costs

The following summarizes the changes in suspended exploratory well costs for the three years ended December 31, 2020.

	Year Ended December 31,
	2020			2019			2018
Beginning balance	$	82		$	98		$	100
Additions pending determination of proved reserves		148			278			658
Charges to exploration expense		(3	)		—			—
Reclassifications to proved properties		(209	)		(294	)		(660	)
Ending balance	$	18		$	82		$	98

Devon had no projects with suspended exploratory well costs capitalized for a period greater than one year since the completion of drilling as of December 31, 2020, 2019 and 2018, respectively.