Property and Equipment Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Property And Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment consisted of the following as of December 31, 2014 and 2013 (in millions, except years):

	As of December 31,						Depreciation Period (Years)
	2014			2013
Software and internally developed software	$	377		$	280		1 to 3
Computer and network equipment	247			208			1 to 4
Land	138			167			N/A
Buildings and building improvements	150			118			2.5 to 40
Leasehold improvements	202			173			1 to 17
Equipment, aircraft and office furniture	187			229			1 to 15
	1,301			1,175
Less accumulated depreciation and amortization	(427		)	(286		)
Property and equipment, net	$	874		$	889