Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 2,882	$ 1,565
Accounts receivable, net of an allowance for uncollectible accounts of $13 and $12 at December 31, 2019 and 2018, respectively	2,854	2,314
Fuel inventory	730	592
Expendable parts and supplies inventories, net of an allowance for obsolescence of $82 and $102 at December 31, 2019 and 2018, respectively	521	463
Prepaid expenses and other	1,262	1,406
Total current assets	8,249	6,340
Noncurrent Assets:
Property and equipment, net of accumulated depreciation and amortization of $17,027 and $15,823 at December 31, 2019 and 2018, respectively	31,310	28,335
Operating lease right-of-use assets	5,627	5,994
Goodwill	9,781	9,781
Identifiable intangibles, net of accumulated amortization of $873 and $862 at December 31, 2019 and 2018, respectively	5,163	4,830
Cash restricted for airport construction	636	1,136
Other noncurrent assets	3,766	3,850
Total noncurrent assets	56,283	53,926
Total assets	64,532	60,266
Current Liabilities:
Current maturities of debt and finance leases	2,287	1,518
Current maturities of operating leases	801	955
Accounts payable	3,266	2,976
Accrued salaries and related benefits	3,701	3,287
Fuel card obligation	736	1,075
Other accrued liabilities	1,078	1,117
Total current liabilities	20,204	18,578
Noncurrent Liabilities:
Debt and finance leases	8,873	8,253
Pension, postretirement and related benefits	8,452	9,163
Noncurrent operating leases	5,294	5,801
Deferred income taxes, net	1,456	163
Other noncurrent liabilities	1,386	969
Total noncurrent liabilities	28,970	28,001
Commitments and Contingencies
Stockholders' Equity:
Common stock at $0.0001 par value; 1,500,000,000 shares authorized, 651,731,443 and 688,136,306 shares issued at December 31, 2019 and 2018, respectively	0	0
Additional paid-in capital	11,129	11,671
Retained earnings	12,454	10,039
Accumulated other comprehensive loss	(7,989)	(7,825)
Treasury stock, at cost, 8,959,730 and 8,191,831 shares at December 31, 2019 and 2018, respectively	(236)	(198)
Total stockholders' equity	15,358	13,687
Total liabilities and stockholders' equity	64,532	60,266
Air traffic
Current Liabilities:
Deferred revenue, current	5,116	4,661
Loyalty program
Current Liabilities:
Deferred revenue, current	3,219	2,989
Noncurrent Liabilities:
Deferred revenue, noncurrent	$ 3,509	$ 3,652