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Consolidated Balance Sheet - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 1,495 $ 1,680
Short-term investments 1,778 1,625
Accounts and other receivables 662 546
Inventories of parts and supplies, at cost 420 337
Prepaid expenses and other current assets 460 310
Total current assets 4,815 4,498
Property and equipment, at cost:    
Flight equipment 21,368 20,275
Ground property and equipment 4,399 3,779
Deposits on flight equipment purchase contracts 919 1,190
Assets constructed for others 1,543 1,220
Property and equipment, at cost 28,229 26,464
Less allowance for depreciation and amortization 9,690 9,420
Property and equipment, net 18,539 17,044
Goodwill 970 970
Other assets 786 774
Total assets 25,110 23,286
Current liabilities:    
Accounts payable 1,320 1,178
Accrued liabilities 1,777 1,985
Air traffic liability 3,460 3,115
Current maturities of long-term debt 348 566
Total current liabilities 6,905 6,844
Long-term debt less current maturities 3,320 2,821
Deferred income taxes 2,358 3,374
Construction obligation [1] 1,390 1,078
Other noncurrent liabilities 707 728
Stockholders' equity:    
Common stock, $1.00 par value: 2,000,000,000 shares authorized; 807,611,634 shares issued in 2017 and 2016 808 808
Capital in excess of par value 1,451 1,410
Retained earnings 14,621 11,418
Accumulated Other Comprehensive Income (Loss), Net of Tax 12 (323)
Treasury stock, at cost: 219,060,856 and 192,450,855 shares in 2017 and 2016 respectively (6,462) (4,872)
Total stockholders' equity 10,430 8,441
Total liabilities and stockholders' equity $ 25,110 $ 23,286
[1] Construction obligation will be reduced through future facility rent payments. These future payments are not fixed per the lease agreement, but are variable and fluctuate based on various market and other factors outside the control of the Company.