CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net Income	$ (142)	$ (143)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	104	102
Stock-based compensation and other	23	5
Special items - Impairment charges and other	13	75
Special items - labor and related	51	0
Changes in certain assets and liabilities:
Changes in deferred tax provision	(56)	58
Increase (Decrease) in Accounts Receivable	(44)	(112)
Increase (Decrease) in Contract with Customer, Liability	433	480
Increase in deferred revenue	46	74
Other - net	(206)	(136)
Net cash provided by operating activities	222	287
Property and equipment additions:
Aircraft and aircraft purchase deposits	(50)	(207)
Other flight equipment	(50)	(24)
Other property and equipment	(24)	(57)
Total property and equipment additions, including capitalized interest	(124)	(288)
Purchases of marketable securities	(201)	(552)
Sales and maturities of marketable securities	388	880
Other investing activities	(3)	(1)
Net cash used in investing activities	60	39
Cash flows from financing activities:
Common stock repurchases	(18)	0
Long-term debt payments	(96)	(170)
Other financing activities	0	2
Net cash provided by (used in) financing activities	(114)	(168)
Net increase in cash, cash equivalents, and restricted cash	168	158
Cash, cash equivalents, and restricted cash at beginning of year	369	494
Cash, cash equivalents, and restricted cash at end of the period	537	652
Cash paid during the period for:
Interest (net of amount capitalized)	32	35
Non-cash transactions:
Right-of-use assets acquired through operating leases	111	158
Reconciliation of cash, cash equivalents, and restricted cash at end of the period
Cash and cash equivalents	516	628
Restricted cash included in Prepaid expenses, assets held-for-sale and other current assets	21	24
Total cash, cash equivalents, and restricted cash at end of the period	$ 537	$ 652