ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX) (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Sale Leaseback Transaction [Line Items]
Other liabilities	$ 334	$ 148
Payments received from LAWA	178	4	0
LAX airport project proprietary assets [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	17	9
LAX airport project assets constructed for other [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	199	143
LAX airport project total cost [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	216	152
LAX airport project reimbursement for assets constructed [Member]
Sale Leaseback Transaction [Line Items]
Other liabilities	187	12
LAX airport project capitalized interest [Member]
Sale Leaseback Transaction [Line Items]
Other liabilities	14	6
LAX airport project reimbursement [Member]
Sale Leaseback Transaction [Line Items]
Other liabilities	$ 201	$ 18