CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net Income (Loss)	$ 58	$ 478	$ (1,324)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	415	394	420
Stock-based compensation and other	42	51	24
Special Items - Impairment charges and other	496	(1)	627
Restructuring Charges	0	(10)	220
Changes in certain assets and liabilities:
Changes in deferred income taxes	22	104	(300)
(Increase) decrease in accounts receivable	(45)	(69)	(168)
Increase in air traffic liability	17	90	173
Increase in deferred revenue	139	81	288
Pension contribution	0	(100)	0
Proceeds from Income Tax Refunds	295	3	8
Other - net	(21)	9	(202)
Net cash provided by (used in) operating activities	1,418	1,030	(234)
Property and equipment additions:
Aircraft and aircraft purchase deposits	(1,272)	(68)	(64)
Other flight equipment	(208)	(126)	(55)
Other property and equipment	(191)	(98)	(103)
Total property and equipment additions	(1,671)	(292)	(222)
Purchases of marketable securities	(1,797)	(4,301)	(2,962)
Sales and maturities of marketable securities	2,252	3,595	2,318
Proceeds from Sale of Productive Assets	4	2	279
Other investing activities	(6)	(12)	(6)
Net cash used in investing activities	(1,218)	(1,008)	(593)
Cash flows from financing activities:
Proceeds from issuance of long-term debt, net of issuance costs	0	363	2,564
Long-term debt payments	(385)	(1,334)	(565)
Common stock repurchases	0	0	(31)
Cash dividend paid	0	0	(45)
Other financing activities	60	57	58
Net cash provided by (used in) financing activities	(325)	(914)	1,981
Net increase (decrease) in cash and cash equivalents	(125)	(892)	1,154
Cash, cash equivalents, and restricted cash at beginning of year	494	1,386	232
Cash, cash equivalents, and restricted cash at end of year	369	494	1,386
Cash paid during the year for:
Interest, net of amount capitalized	71	109	50
Income taxes, net of refunds received	0	48	0
Cash and cash equivalents	$ 338	$ 470	$ 1,370