Property and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

The major classes of property and equipment are summarized in the table below. The information below also gives effect to the Historical Adjustments as discussed in note 2.

	Estimated Useful Lives	As of December 31,
		2019			2018
					(As Restated)
Land(a)	—	$	2,080		$	1,981
Buildings	40 years	147			134
Communications infrastructure assets	1-20 years	20,521			18,683
Information technology assets and other	2-7 years	506			443
Construction in process	—	1,080			975
Total gross property and equipment		24,334			22,216
Less: accumulated depreciation		(9,668		)	(8,563		)
Total property and equipment, net		$	14,666		$	13,653

    

(a) Includes land owned through fee interests and perpetual easements.

Depreciation expense for the years ended December 31, 2019, 2018 and 2017 was $1.1 billion, $1.1 billion and $914 million, respectively. See note 15 for a discussion of finance leases recorded as "Property and equipment, net" on the Company's consolidated balance sheet.