Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property and equipment, net

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

	At December 31,
	2017			2016
Land	$	1		$	1
Buildings	4			4
Leasehold improvements	224			162
Computer equipment	658			560
Office furniture and other equipment	92			78
Total cost of property and equipment	979			805
Less accumulated depreciation	(685		)	(547		)
Property and equipment, net	$	294		$	258