Other Property and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Other Property and Equipment

Other Property and Equipment

Other Property and Equipment

A summary of other property and equipment held for use and the estimated useful lives thereof is as follows:

	December 31,						Estimated Useful Life
	2019			2018
	($ in millions)						(in years)
Buildings and improvements	$	1,058		$	1,053		10 – 39
Computer equipment	355			353			5
Sand mine	78			—			10 – 30
Natural gas compressors(a)	48			48			3 – 20
Land	115			106
Other	156			161			5 – 20
Total other property and equipment, at cost	1,810			1,721
Less: accumulated depreciation	(692		)	(630		)
Total other property and equipment, net	$	1,118		$	1,091

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(a)

Includes assets under finance lease of $27 million, less accumulated depreciation of $10 million and $1 million, as of December 31, 2019 and 2018, respectively. The related amortization expense for assets under finance lease is included in depreciation, depletion and amortization expense on our consolidated statement of operations.