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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Current Assets |  |
Cash and cash equivalents | $ 81 | $ 73
Marketable securities | 1,526 | 1,255
Total cash and marketable securities | 1,607 | 1,328
Receivables - net | 254 | 212
Inventories and supplies - net | 45 | 51
Prepaid expenses and other current assets | 97 | 72
Total Current Assets | 2,003 | 1,663
Property and Equipment |  |
Aircraft and other flight equipment | 6,198 | 5,690
Other property and equipment | 994 | 955
Deposits for future flight equipment | 551 | 771
Property and Equipment Total | 7,743 | 7,416
Less accumulated depreciation and amortization | 2,784 | 2,614
Total Property and Equipment - Net | 4,959 | 4,802
Other Assets | 73 | 65
Total Assets | 7,035 | 6,530
Current Liabilities |  |
Accounts payable | 78 | 63
Accrued wages, vacation and payroll taxes | 239 | 298
Air traffic liability | 870 | 669
Other accrued liabilities | 757 | 661
Current portion of long-term debt | 117 | 114
Total Current Liabilities | 2,061 | 1,805
Long-Term Debt, Net of Current Portion | 509 | 569
Other Liabilities and Credits |  |
Deferred income taxes | 721 | 682
Deferred revenue | 480 | 431
Obligation for pension and postretirement medical benefits | 271 | 270
Other liabilities | 366 | 362
Other Liabilities and Credits Totals | 1,838 | 1,745
Commitments and Contingencies |  |
Shareholders' Equity |  |
Preferred stock, $0.01 par value, Authorized: 5,000,000 shares, none issued or outstanding | 0 | 0
Common stock, $0.01 par value, Authorized: 200,000,000 shares, Issued: 2016 - 128,941,102 shares; 2015 - 128,442,099 shares, Outstanding: 2016 - 123,079,519 shares; 2015 - 125,175,325 shares | 1 | 1
Capital in excess of par value | 91 | 73
Treasury stock (common), at cost: 2016 - 5,861,583 shares; 2015 - 3,266,774 shares | (444) | (250)
Accumulated other comprehensive loss | (287) | (303)
Retained earnings | 3,266 | 2,890
Total Shareholders' Equity | 2,627 | 2,411
Total Liabilities and Shareholders' Equity | $ 7,035 | $ 6,530

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