Orbitz Worldwide (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Summary of operations for Orbitz Worldwide
Net revenue	$ 506	$ 530	$ 1,056	$ 1,061
Operating income	63	66	129	145
Interest expense, net	(77)	(72)	(144)	(149)
Provision for income taxes	(8)	(8)	(16)	(19)
Orbitz Worldwide [Member]
Summary of operations for Orbitz Worldwide
Net revenue	201	202	391	387
Operating expenses	186	182	372	368
Operating income	15	20	19	19
Interest expense, net	(9)	(10)	(19)	(20)
Income (loss) before income taxes	6	10		(1)
Provision for income taxes	(1)	(1)	(2)	(1)
Net income (loss)	$ 5	$ 9	$ (2)	$ (2)