Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2014

Property Plant And Equipment [Abstract]

Summary of Property and Equipment

Property and equipment, net, consisted of:

	March 31, 2014						December 31, 2013
(in $ millions)	Cost		Accumulated depreciation		Net		Cost		Accumulated depreciation		Net
Capitalized software		686		(473)		213		650		(449)		201
Computer equipment		282		(149)		133		281		(139)		142
Building and leasehold improvements		18		(8)		10		17		(8)		9
Construction in progress		66		—		66		76		—		76
		1,052		(630)		422		1,024		(596)		428