Orbitz Worldwide (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of operations for Orbitz Worldwide
Net revenue	$ 2,002	$ 2,035	$ 1,996
Operating income	138	200	274
Interest expense, net	(290)	(287)	(272)
Provision for income taxes	(23)	(29)	(47)
Orbitz Worldwide [Member]
Summary of operations for Orbitz Worldwide
Net revenue	779	767	757
Operating expenses (excluding impairment)	720	712	688
Impairment of goodwill, intangible assets, property and equipment and other long-lived assets	321	50	81
Operating income	(262)	5	(12)
Interest expense, net	(37)	(41)	(44)
Other income		1
Loss before income taxes	(299)	(35)	(56)
Provision for income taxes	(3)	(2)	(2)
Net loss	$ (302)	$ (37)	$ (58)