Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 8,785	$ 8,307
Short-term investments	4,417	5,789
Accounts receivable, net of an allowance for uncollectible accounts of $78 and $89	2,183	1,396
Fuel inventory	641	377
Expendable parts and supplies inventories, net of an allowance for obsolescence of $174 and $188	371	355
Prepaid expenses and other	1,074	1,180
Total current assets	17,471	17,404
Noncurrent Assets:
Property and equipment, net of accumulated depreciation and amortization of $18,693 and $17,511	27,816	26,529
Operating lease right-of-use assets	5,827	5,733
Goodwill	9,753	9,753
Identifiable intangibles, net of accumulated amortization of $890 and $883	6,004	6,011
Cash restricted for airport construction	713	1,556
Equity investments	1,919	1,665
Deferred income taxes, net	1,813	1,988
Other noncurrent assets	1,467	1,357
Total noncurrent assets	55,312	54,592
Total assets	72,783	71,996
Current Liabilities:
Current maturities of debt and finance leases	2,296	1,732
Current maturities of operating leases	636	678
Accounts payable	4,017	2,840
Accrued salaries and related benefits	2,198	2,086
Fuel card obligation	1,100	1,100
Other accrued liabilities	1,812	1,670
Total current liabilities	20,924	15,927
Noncurrent Liabilities:
Debt and finance leases	25,523	27,425
Pension, postretirement and related benefits	8,408	10,630
Noncurrent operating leases	5,742	5,713
Other noncurrent liabilities	4,613	4,862
Total noncurrent liabilities	49,253	54,535
Commitments and Contingencies
Stockholders' Equity:
Common stock at $0.0001 par value; 1,500,000,000 shares authorized, 649,758,099 and 647,352,203 shares issued	0	0
Additional paid-in capital	11,428	11,259
Retained earnings/(accumulated deficit)	259	(428)
Accumulated other comprehensive loss	(8,800)	(9,038)
Treasury stock, at cost, 9,744,281 and 9,169,683 shares	(281)	(259)
Total stockholders' equity	2,606	1,534
Total liabilities and stockholders' equity	72,783	71,996
Air traffic
Current Liabilities:
Deferred revenue liability, current	6,246	4,044
Noncurrent Liabilities:
Deferred revenue liability, noncurrent	130	500
Loyalty program
Current Liabilities:
Deferred revenue liability, current	2,619	1,777
Noncurrent Liabilities:
Deferred revenue liability, noncurrent	$ 4,837	$ 5,405