Condensed Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 1,832	$ 1,355
Short-term investments	1,728	1,797
Accounts and other receivables	468	419
Inventories of parts and supplies, at cost	429	467
Deferred income taxes	237	168
Prepaid expenses and other current assets	291	250
Total current assets	4,985	4,456
Property and equipment, at cost:
Flight equipment	18,019	16,937
Ground property and equipment	2,866	2,666
Deposits on flight equipment purchase contracts	601	764
Assets constructed for others	570	453
Property and equipment, at cost	22,056	20,820
Less allowance for depreciation and amortization	8,091	7,431
Property and equipment, net	13,965	13,389
Goodwill	970	970
Other assets	619	530
Total assets	20,539	19,345
Current liabilities:
Accounts payable	1,185	1,247
Accrued liabilities	1,277	1,229
Air traffic liability	3,377	2,571
Current maturities of long-term debt	607	629
Total current liabilities	6,446	5,676
Long-term debt less current maturities	2,125	2,191
Deferred income taxes	3,360	2,934
Construction obligation	521	437
Other noncurrent liabilities	658	771
Stockholders' equity:
Common stock	808	808
Capital in excess of par value	1,280	1,231
Retained earnings	7,266	6,431
Accumulated other comprehensive loss	(92)	(3)
Treasury stock, at cost	(1,833)	(1,131)
Total stockholders' equity	7,429	7,336
Total liabilities and stockholders' equity	$ 20,539	$ 19,345