CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 338	$ 470
Marketable securities	2,079	2,646
Total cash and marketable securities	2,417	3,116
Receivables - net	296	546
Inventories and supplies - net	104	62
Prepaid Expense	163	120
Other Assets, Current	60	76
Total Current Assets	3,040	3,920
Property and Equipment
Aircraft and other flight equipment	9,053	8,127
Other property and equipment	1,661	1,489
Deposits for future flight equipment	670	384
Property and Equipment	11,384	10,000
Less accumulated depreciation and amortization	4,127	3,862
Total Property and Equipment - Net	7,257	6,138
Other Assets
Operating Lease, Right-of-Use Asset	1,471	1,453
Goodwill and intangible assets	2,038	2,044
Other noncurrent assets	380	396
Total Other Assets	3,889	3,893
Total Assets	14,186	13,951
Current Liabilities
Accounts payable	221	200
Accrued wages, vacation and payroll taxes	619	457
Other accrued liabilities	846	625
Operating Lease, Liability, Current	228	268
Current portion of long-term debt	276	366
Total Current Liabilities	4,493	3,991
Long-Term Debt, Net of Current Portion	1,883	2,173
Other Liabilities and Credits
Operating Lease, Liability, Noncurrent	1,393	1,279
Deferred Income Tax Liabilities, Net	574	578
Deferred revenue	1,374	1,446
Obligation for pension and postretirement medical benefits	348	305
Other liabilities	305	378
Total Other Liabilities and Credits	3,994	3,986
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: 400,000,000 shares, Issued: 2022 - 136,883,042 shares; 2021 - 135,255,808 shares, Outstanding: 2022 - 127,533,916 shares; 2021 - 125,905,864 shares	1	1
Capital in excess of par value	577	494
Treasury stock (common), at cost: 2022 - 9,349,944 shares; 2021 - 9,349,944 shares	(674)	(674)
Accumulated other comprehensive loss	(388)	(262)
Retained earnings	4,300	4,242
Shareholders' Equity Total	3,816	3,801
Total Liabilities and Shareholders' Equity	$ 14,186	13,951
Common stock, shares authorized	400,000,000
Common stock, par value	$ 0.01
Air Traffic Liability
Current Liabilities
Air traffic liability	$ 1,180	1,163
Mileage Plan Revenue [Member]
Current Liabilities
Air traffic liability	$ 1,123	$ 912

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).