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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Current Assets |  |
Cash and cash equivalents | $ 328 | $ 73
Marketable securities | 1,252 | 1,255
Total cash and marketable securities | 1,580 | 1,328
Receivables—less allowance for doubtful accounts of $1 and $1 | 302 | 212
Inventories and supplies—net | 47 | 51
Prepaid expenses and other current assets | 121 | 72
Total Current Assets | 2,050 | 1,663
Property and Equipment |  |
Aircraft and other flight equipment | 6,947 | 5,690
Other property and equipment | 1,103 | 955
Deposits for future flight equipment | 545 | 771
Property and Equipment | 8,595 | 7,416
Less accumulated depreciation and amortization | 2,929 | 2,614
Total Property and Equipment—Net | 5,666 | 4,802
Other Assets [Abstract] |  |
Goodwill | 1,934 | 0
Intangible assets | 143 | 0
Other noncurrent assets | 169 | 65
Total Other Assets | 2,246 | 65
Total Assets | 9,962 | 6,530
Current Liabilities |  |
Accounts payable | 92 | 63
Accrued wages, vacation and payroll taxes | 397 | 298
Other accrued liabilities | 878 | 661
Air traffic liability | 849 | 669
Current portion of long-term debt | 319 | 114
Total Current Liabilities | 2,535 | 1,805
Long-Term Debt, Net of Current Portion | 2,645 | 569
Other Liabilities and Credits |  |
Deferred income taxes | 463 | 682
Deferred revenue | 640 | 431
Obligation for pension and postretirement medical benefits | 331 | 270
Other liabilities | 417 | 362
Other Liabilities and Credits Totals | 1,851 | 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 - 129,189,634 shares; 2015 - 128,442,099 shares, Outstanding: 2016 - 123,328,051 shares; 2015 - 125,175,325 shares | 1 | 1
Capital in excess of par value | 110 | 73
Treasury stock (common), at cost: 2016 - 5,861,583 shares; 2015 - 3,266,774 shares | (443) | (250)
Accumulated other comprehensive loss | (305) | (303)
Retained earnings | 3,568 | 2,890
Shareholders' Equity Total | 2,931 | 2,411
Total Liabilities and Shareholders' Equity | $ 9,962 | $ 6,530

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