CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net Income (Loss)	$ 478	$ (1,324)	$ 769
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	394	420	423
Stock-based compensation and other	51	24	29
Special Items - Impairment charges and other	(1)	627	0
Restructuring Charges	(10)	220	0
Changes in certain assets and liabilities:
Changes in deferred tax provision	104	(300)	209
(Increase) decrease in accounts receivable	(66)	(160)	43
Increase in air traffic liability	90	173	112
Increase in deferred revenue	81	288	116
Pension contribution	(100)	0	(65)
Other - net	9	(202)	86
Net cash provided by (used in) operating activities	1,030	(234)	1,722
Property and equipment additions:
Aircraft and aircraft purchase deposits	(68)	(64)	(356)
Other flight equipment	(126)	(55)	(178)
Other property and equipment	(98)	(103)	(162)
Total property and equipment additions	(292)	(222)	(696)
Purchases of marketable securities	(4,301)	(2,962)	(1,810)
Sales and maturities of marketable securities	3,595	2,318	1,674
Proceeds from Sale of Productive Assets	2	279	28
Other investing activities	(12)	(6)	13
Net cash used in investing activities	(1,008)	(593)	(791)
Cash flows from financing activities:
Proceeds from issuance of long-term debt, net of issuance costs	363	2,564	450
Long-term debt payments	(1,334)	(565)	(1,058)
Common stock repurchases	0	(31)	(75)
Cash dividend paid	0	(45)	(173)
Other financing activities	57	58	43
Net cash provided by (used in) financing activities	(914)	1,981	(813)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(892)	1,154	118
Cash, cash equivalents, and restricted cash at beginning of year	1,386	232	114
Cash, cash equivalents, and restricted cash at end of year	494	1,386	232
Cash paid during the year for:
Interest, net of amount capitalized	109	50	60
Income taxes, net of refunds received	$ 48	$ 0	$ 31