Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 1,851	$ 1,680
Short-term investments	1,631	1,625
Accounts and other receivables	585	546
Inventories of parts and supplies, at cost	356	337
Prepaid expenses and other current assets	235	310
Total current assets	4,658	4,498
Property and equipment, at cost:
Flight equipment	20,348	20,275
Ground property and equipment	3,908	3,779
Deposits on flight equipment purchase contracts	1,208	1,190
Assets constructed for others	1,319	1,220
Property and equipment, at cost	26,783	26,464
Less allowance for depreciation and amortization	9,497	9,420
Property and equipment, net	17,286	17,044
Goodwill	970	970
Other assets	849	774
Total assets	23,763	23,286
Current liabilities:
Accounts payable	1,214	1,178
Accrued liabilities	1,947	1,985
Air traffic liability	4,012	3,115
Current maturities of long-term debt	285	566
Total current liabilities	7,458	6,844
Long-term debt less current maturities	2,781	2,821
Deferred income taxes	3,442	3,374
Construction obligation	1,175	1,078
Other noncurrent liabilities	703	728
Stockholders' equity:
Common stock	808	808
Capital in excess of par value	1,419	1,410
Retained earnings	11,708	11,418
Accumulated other comprehensive loss	(312)	(323)
Treasury stock, at cost	(5,419)	(4,872)
Total stockholders' equity	8,204	8,441
Total liabilities and stockholders' equity	$ 23,763	$ 23,286