Consolidated Balance Sheets (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 2,855	$ 2,892
Short-term investments	967	718
Restricted cash, cash equivalents and short-term investments	432	409
Accounts receivable, net of an allowance for uncollectible accounts	1,885	1,456
Expendable parts and supplies inventories, net of an allowance for obsolescence	403	318
Deferred income taxes, net	342	355
Prepaid expenses and other	1,179	1,159
Total current assets	8,063	7,307
Property and Equipment, Net:
Property and equipment, net of accumulated depreciation and amortization	20,315	20,307
Other Assets:
Goodwill	9,794	9,794
Identifiable intangibles, net of accumulated amortization	4,714	4,749
Other noncurrent assets	992	1,031
Total other assets	15,500	15,574
Total assets	43,878	43,188
Current Liabilities:
Current maturities of long-term debt and capital leases	1,635	2,073
Air traffic liability	5,001	3,306
Accounts payable	1,900	1,713
Frequent flyer deferred revenue	1,687	1,690
Accrued salaries and related benefits	1,086	1,370
Taxes payable	766	579
Other accrued liabilities	727	654
Total current liabilities	12,802	11,385
Noncurrent Liabilities:
Long-term debt and capital leases	13,026	13,179
Pension, postretirement and related benefits	11,307	11,493
Frequent flyer deferred revenue	2,662	2,777
Deferred income taxes, net	1,913	1,924
Other noncurrent liabilities	1,383	1,533
Total noncurrent liabilities	30,291	30,906
Stockholders' Equity:
Common stock	0	0
Additional paid-in capital	13,964	13,926
Accumulated deficit	(9,372)	(9,252)
Accumulated other comprehensive loss	(3,593)	(3,578)
Treasury stock, at cost	(214)	(199)
Total stockholders' equity	785	897
Total liabilities and stockholders' equity	$ 43,878	$ 43,188