Property and Equipment, Net

12 Months Ended

Dec. 31, 2018

Property and equipment, net was comprised of the following (amounts in millions):



	At December 31,
	2018			2017
Land	$	1		$	1
Buildings	4			4
Leasehold improvements	248			224
Computer equipment	700			658
Office furniture and other equipment	99			92
Total cost of property and equipment	1,052			979
Less accumulated depreciation	(770		)	(685		)
Property and equipment, net	$	282		$	294

Depreciation expense for the years ended December 31, 2018, 2017, and 2016 was $138 million, $130 million, and $121 million, respectively.

Rental expense was $75 million, $71 million and $65 million for the years ended December 31, 2018, 2017, and 2016, respectively.