Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,355	$ 1,113
Short-term investments	1,797	1,857
Accounts and other receivables	419	332
Inventories of parts and supplies, at cost	467	469
Deferred income taxes	168	246
Prepaid expenses and other current assets	250	210
Total current assets	4,456	4,227
Property and equipment, at cost:
Flight equipment	16,937	16,367
Ground property and equipment	2,666	2,383
Deposits on flight equipment purchase contracts	764	416
Assets constructed for others	453	331
Property and equipment, at cost	20,820	19,497
Less allowance for depreciation and amortization	7,431	6,731
Property and equipment, net	13,389	12,766
Goodwill	970	970
Other assets	530	633
Total assets	19,345	18,596
Current liabilities:
Accounts payable	1,247	1,107
Accrued liabilities	1,229	1,102
Air traffic liability	2,571	2,170
Current maturities of long-term debt	629	271
Total current liabilities	5,676	4,650
Long-term debt less current maturities	2,191	2,883
Deferred income taxes	2,934	2,884
Construction obligation	437	331
Other noncurrent liabilities	771	856
Stockholders' equity:
Common stock, $1.00 par value: 2,000,000,000 shares authorized; 807,611,634 shares issued in 2013 and 2012	808	808
Capital in excess of par value	1,231	1,210
Retained earnings	6,431	5,768
Accumulated other comprehensive income (loss)	(3)	(119)
Treasury stock, at cost: 107,136,946 and 77,292,145 shares in 2013 and 2012 respectively	(1,131)	(675)
Total stockholders' equity	7,336	6,992
Total liabilities and stockholders' equity	$ 19,345	$ 18,596