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Consolidated Balance Sheets - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
CURRENT ASSETS |  |
Cash and cash equivalents | $ 1,918 | $ 959
Investment securities | 1,135 | 369
Receivables, less allowance (2020 - $2; 2019-$1) | 98 | 231
Inventories, less allowance (2020 - $27; 2019-$22) | 71 | 81
Prepaid expenses and other | 123 | 146
Total current assets | 3,345 | 1,786
PROPERTY AND EQUIPMENT |  |
Flight equipment | 10,256 | 10,332
Pre-delivery deposits for flight equipment | 420 | 433
Total flight equipment and pre-delivery deposits, gross | 10,676 | 10,765
Less accumulated depreciation | 2,888 | 2,768
Total flight equipment and pre-delivery deposits, net | 7,788 | 7,997
Other property and equipment | 1,202 | 1,145
Less accumulated depreciation | 591 | 528
Total other property and equipment, net | 611 | 617
Total property and equipment, net | 8,399 | 8,614
Operating lease assets | 804 | 912
OTHER ASSETS |  |
Investment securities | 2 | 3
Restricted cash | 51 | 59
Intangible assets, net of accumulated amortization of $360 and $319, at 2020 and 2019, respectively. | 261 | 241
Other | 544 | 303
Total other assets | 858 | 606
TOTAL ASSETS | 13,406 | 11,918
CURRENT LIABILITIES |  |
Accounts payable | 365 | 401
Air traffic liability | 1,122 | 1,119
Accrued salaries, wages and benefits | 409 | 376
Other accrued liabilities | 215 | 295
Operating lease liabilities | 113 | 128
Current maturities of long-term debt and finance lease obligations | 450 | 344
Total current liabilities | 2,674 | 2,663
LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS | 4,413 | 1,990
LONG-TERM OPERATING LEASE LIABILITIES | 752 | 690
DEFERRED TAXES AND OTHER LIABILITIES |  |
Deferred income taxes | 922 | 1,251
Air traffic liability - non-current | 616 | 481
Other | 78 | 44
Total deferred taxes and other liabilities | 1,616 | 1,776
COMMITMENTS AND CONTINGENCIES (Notes 11 & 12) |  |
STOCKHOLDERS’ EQUITY |  |
Preferred stock, $0.01 par value; 25 shares authorized, none issued | 0 | 0
Common stock, $0.01 par value; 900 shares authorized, 474 and 427 shares issued and 316 and 282 shares outstanding at 2020 and 2019, respectively | 5 | 4
Treasury stock, at cost; 158 and 145 shares at 2020 and 2019, respectively | (1,981) | (1,782)
Additional paid-in capital | 2,959 | 2,253
Retained earnings | 2,968 | 4,322
Accumulated other comprehensive income | 0 | 2
Total stockholders’ equity | 3,951 | 4,799
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY | $ 13,406 | $ 11,918

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