Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended				3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Fort Lauderdale-Hollywood International Airport [Member]	Jun. 30, 2012 DAL	Dec. 31, 2010 DAL	Jun. 30, 2014 DAL	Jun. 30, 2014 HOU	Jun. 30, 2014 Los Angeles World Airport [Member]
Airport Project [Line Items]
Total Expected Cost Of Airport Project						$ 295			$ 519	$ 156	$ 500
Municipal bonds issued							146	310
AssetsConstructedForOthers	515		515		453				470	26
Depreciation and amortization	228	213	449	422
Construction obligation	$ 468		$ 468		$ 437