Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Current Assets
Cash	$ 606		$ 480
Short-term investments	3,638		3,412
Restricted cash and short-term investments	853	[1]	850
Receivables, net	1,243		1,124
Inventories, net	595		580
Fuel derivative contracts	66	[1]	65
Other current assets	524		561
Total current assets	7,525		7,072
Equipment and Property
Flight Equipment Owned, Net	10,216		10,310
Other equipment and property, net	2,099		2,099
Purchase deposits for flight equipment	721		710
Equipment and property, net	13,036		13,119
Equipment and Property Under Capital Leases
Flight equipment, net	212		222
Other equipment and property, net	57		61
Equipment and property under capital leases, net	269		283
International slots and route authorities	708		708
Domestic slots and airport operating and gate lease rights, less accumulated amortization, net	155		161
Other assets	2,159		2,167
Total Assets	23,852		23,510
Current Liabilities
Accounts payable	1,440		1,244
Accrued liabilities	2,084		2,117
Air traffic liability	5,180		4,524
Current maturities of long-term debt	1,256		1,388
Current obligations under capital leases	30		31
Total current liabilities	9,990		9,304
Long-term debt, less current maturities	6,646		6,735
Obligations under capital leases, less current obligations	375		381
Pension and postretirement benefits	6,730		6,780
Other liabilities, deferred gains and deferred credits	1,708		1,691
Liabilities Subject to Compromise	6,779		6,606
Stockholders' Equity (Deficit)
Preferred stock	0		0
Common stock	341		341
Additional paid-in capital	4,483		4,481
Treasury stock	(367)		(367)
Accumulated other comprehensive income (loss)	(3,030)		(2,980)
Accumulated deficit	(9,803)		(9,462)
Total stockholders' equity	(8,376)		(7,987)
Total Liabilities and Stockholders' Equity (Deficit)	$ 23,852		$ 23,510

[1] 1 Unrealized gains or losses on short-term investments, restricted cash and short-term investments and derivatives qualifying for hedge accounting are recorded in Accumulated other comprehensive income (loss) at each measurement date.