Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 2,009	$ 1,565
Accounts receivable, net of an allowance for uncollectible accounts of $14 and $12 at June 30, 2019 and December 31, 2018, respectively	2,844	2,314
Fuel inventory	590	592
Expendable parts and supplies inventories, net of an allowance for obsolescence of $96 and $102 at June 30, 2019 and December 31, 2018, respectively	493	463
Prepaid expenses and other	1,198	1,406
Total current assets	7,134	6,340
Noncurrent Assets:
Property and equipment, net of accumulated depreciation and amortization of $17,005 and $15,823 at June 30, 2019 and December 31, 2018, respectively	30,165	28,335
Operating lease right-of-use assets	5,906	5,994
Goodwill	9,781	9,781
Identifiable intangibles, net of accumulated amortization of $868 and $862 at June 30, 2019 and December 31, 2018, respectively	4,824	4,830
Cash restricted for airport construction	893	1,136
Other noncurrent assets	3,815	3,850
Total noncurrent assets	55,384	53,926
Total assets	62,518	60,266
Current Liabilities:
Current maturities of long-term debt and finance leases	2,281	1,518
Current maturities of operating leases	841	955
Accounts payable	3,359	2,976
Accrued salaries and related benefits	2,617	3,287
Fuel card obligation	1,067	1,075
Other accrued liabilities	1,335	1,117
Total current liabilities	21,164	18,578
Noncurrent Liabilities:
Long-term debt and finance leases	7,710	8,253
Pension, postretirement and related benefits	8,516	9,163
Noncurrent operating leases	5,539	5,801
Other noncurrent liabilities	2,025	1,132
Total noncurrent liabilities	27,396	28,001
Commitments and Contingencies
Stockholders' Equity:
Common stock at $0.0001 par value; 1,500,000,000 shares authorized, 659,145,280 and 688,136,306 shares issued at June 30, 2019 and December 31, 2018, respectively	0	0
Additional paid-in capital	11,201	11,671
Retained earnings	10,686	10,039
Accumulated other comprehensive loss	(7,694)	(7,825)
Treasury stock, at cost, 8,944,663 and 8,191,831 shares at June 30, 2019 and December 31, 2018, respectively	(235)	(198)
Total stockholders' equity	13,958	13,687
Total liabilities and stockholders' equity	62,518	60,266
Air Traffic
Current Liabilities:
Deferred revenue liability	6,616	4,661
Loyalty program
Current Liabilities:
Deferred revenue liability	3,048	2,989
Noncurrent Liabilities:
Loyalty program deferred revenue	$ 3,606	$ 3,652