CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 1,201	$ 281
Restricted cash	29	0
Marketable securities	1,274	1,510
Total cash, restricted cash, and marketable securities	2,504	1,791
Receivables - net	558	383
Inventories and supplies - net	199	116
Prepaid Expense	307	176
Other Assets, Current	192	239
Total Current Assets	3,760	2,705
Property and Equipment
Aircraft and other flight equipment	12,273	10,425
Other property and equipment	2,173	1,814
Deposits for future flight equipment	883	491
Property and Equipment	15,329	12,730
Less accumulated depreciation and amortization	(4,548)	(4,342)
Total Property and Equipment - Net	10,781	8,388
Other Assets
Operating lease assets	1,296	1,195
Goodwill	2,724	1,943
Intangible assets - net	873	90
Other noncurrent assets	334	292
Total Other Assets	5,227	3,520
Total Assets	19,768	14,613
Current Liabilities
Accounts payable	186	207
Accrued wages, vacation and payroll taxes	1,001	584
Long-Term Debt, Current Maturities	442	289
Other accrued liabilities	997	800
Current portion of operating lease liabilities	207	158
Current portion of finance lease liabilities	8	64
Total Current Liabilities	6,145	4,459
Other Liabilities and Credits
Long-term debt, less current portion	4,491	2,182
Operating lease liabilities, net of current portion	1,198	1,125
Finance lease liabilities, net of current portion	47	0
Net deferred tax liabilities	934	695
Deferred revenue	1,664	1,382
Obligation for pension and postretirement medical benefits	460	362
Other liabilities	457	295
Total Noncurrent Liabilities	9,251	6,041
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: 2024 - 141,449,174 shares; 2023 - 138,960,830 shares, Outstanding: 2024 - 123,119,199 shares; 2023 - 126,090,353 shares	1	1
Capital in excess of par value	811	695
Treasury stock (common), at cost: 2024 - 18,329,975 shares; 2023 - 12,870,477 shares	(1,131)	(819)
Accumulated other comprehensive loss	(239)	(299)
Retained earnings	4,930	4,535
Shareholders' Equity Total	4,372	4,113
Total Liabilities and Shareholders' Equity	19,768	14,613
Air Traffic Liability
Current Liabilities
Air traffic liability	1,712	1,136
Mileage Plan Revenue
Current Liabilities
Air traffic liability	$ 1,592	$ 1,221

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).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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).